ABSTRACTOnce a herbicide is introduced into the environment, some risks are inevitable as it can trigger accumulation, leaching and runoff, thus contaminating soil and water resources. For a proper risk assessment, the present study investigates the adsorption, degradation and leaching behaviour of pretilachlor, butachlor, anilofos and pendimethalin. Among the studied herbicides, pendimethalin (KFads 1.466 ± 0.087 to 2.569 ± 0.072 µg1–1/n g−1 ml1/n; DT50 65.34–120.29 days) has the highest adsorption and persistence in soil, followed by anilofos (KFads 0.967 ± 0.063 to 1.637 ± 0.077 µg1–1/n g−1 ml1/n; DT50 37.12–77.63 days), butachlor (KFads 0.722 ± 0.077 to 1.273 ± 0.067 µg1–1/n g−1 ml1/n; DT50 31.23–65.13 days) and pretilachlor (KFads 0.834 ± 0.066 to 1.422 ± 0.071 µg1–1/n g−1 ml1/n; DT50 26.32–61.36 days). Pretilachlor, butachlor, anilofos and pendimethalin leached up to 40–60, 30–40, 20–30 and 10–20 cm soil layers, respectively, indicating that pendimethalin was least mobile in the studied soils. Increase in simulated rainfall (300 mm) increased the downward mobility of herbicides. Among different soils, herbicide degradation and leaching were highest in loamy sand and decreased with an increase in organic matter (OM) content, while adsorption was lowest in loamy sand and increased with an increase in OM content. The addition of farmyard manure amendment reduced the mobility of pretilachlor, butachlor, pendimethalin and anilofos, and these leached up to 20–30, 20–30, 0–10 and 10–20 cm soil layers, respectively. The results indicated that organic amendments can be used as an effective management practice for controlling groundwater contamination.KEYWORDS: Leaching risksimulated rainfallsoil typeorganic amendmentGUS index AcknowledgmentsThe authors would like to acknowledge the Directorate of Weed Science Research, Jabalpur, and Punjab Agricultural University, Ludhiana, for providing the necessary research facilities.Disclosure statementNo potential conflict of interest was reported by the author(s).Supplementary dataSupplemental data for this article can be accessed online at https://doi.org/10.1080/03067319.2023.2279284.
{"title":"Effect of soil properties on adsorption, degradation and leaching potential of four herbicides","authors":"Pervinder Kaur, Harshdeep Kaur, Makhan Singh Bhullar","doi":"10.1080/03067319.2023.2279284","DOIUrl":"https://doi.org/10.1080/03067319.2023.2279284","url":null,"abstract":"ABSTRACTOnce a herbicide is introduced into the environment, some risks are inevitable as it can trigger accumulation, leaching and runoff, thus contaminating soil and water resources. For a proper risk assessment, the present study investigates the adsorption, degradation and leaching behaviour of pretilachlor, butachlor, anilofos and pendimethalin. Among the studied herbicides, pendimethalin (KFads 1.466 ± 0.087 to 2.569 ± 0.072 µg1–1/n g−1 ml1/n; DT50 65.34–120.29 days) has the highest adsorption and persistence in soil, followed by anilofos (KFads 0.967 ± 0.063 to 1.637 ± 0.077 µg1–1/n g−1 ml1/n; DT50 37.12–77.63 days), butachlor (KFads 0.722 ± 0.077 to 1.273 ± 0.067 µg1–1/n g−1 ml1/n; DT50 31.23–65.13 days) and pretilachlor (KFads 0.834 ± 0.066 to 1.422 ± 0.071 µg1–1/n g−1 ml1/n; DT50 26.32–61.36 days). Pretilachlor, butachlor, anilofos and pendimethalin leached up to 40–60, 30–40, 20–30 and 10–20 cm soil layers, respectively, indicating that pendimethalin was least mobile in the studied soils. Increase in simulated rainfall (300 mm) increased the downward mobility of herbicides. Among different soils, herbicide degradation and leaching were highest in loamy sand and decreased with an increase in organic matter (OM) content, while adsorption was lowest in loamy sand and increased with an increase in OM content. The addition of farmyard manure amendment reduced the mobility of pretilachlor, butachlor, pendimethalin and anilofos, and these leached up to 20–30, 20–30, 0–10 and 10–20 cm soil layers, respectively. The results indicated that organic amendments can be used as an effective management practice for controlling groundwater contamination.KEYWORDS: Leaching risksimulated rainfallsoil typeorganic amendmentGUS index AcknowledgmentsThe authors would like to acknowledge the Directorate of Weed Science Research, Jabalpur, and Punjab Agricultural University, Ludhiana, for providing the necessary research facilities.Disclosure statementNo potential conflict of interest was reported by the author(s).Supplementary dataSupplemental data for this article can be accessed online at https://doi.org/10.1080/03067319.2023.2279284.","PeriodicalId":13973,"journal":{"name":"International Journal of Environmental Analytical Chemistry","volume":"18 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136347824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-13DOI: 10.1080/03067319.2023.2276344
Aysir Alhmaunde, Mahboubeh Masrournia, Ali Javid
ABSTRACTAtomoxetine, venlafaxine, and duloxetine are three antidepressant drugs widely prescribed to treat this disorder. Determining these drugs is a major challenge due to their low concentration and high matrix effects on biological samples. Dispersive micro solid phase extraction was developed as a sample preparation strategy to extract these drugs in real water and biological samples. A novel sorbent containing a magnetic MOF-on-MOF was prepared to extract these drugs using Fe3O4 nanoparticle and Sol-gel technique. The microextraction procedure was optimised under two steps using experimental design. Three factors, including pH, sorbent amount, and desorption solvent volume, significantly affected the extraction of analytes and optimised using a central composite design. The optimum value of pH, sorbent amount, and desorption solvent volume was 29 mg, 6.5, and 150 µL. Under optimum conditions, the linear ranges for measuring atomoxetine, venlafaxine, and duloxetine in water samples were 1.42–496, 0.43–472, and 0.73–459 ng mL−1, respectively. The detection limits of atomoxetine, venlafaxine, and duloxetine were 0.4, 0.1, and 0.2 ng mL−1. High and proper preconcentration factors ranged from 462.4–511.4 in distiled water samples and 450.7–489.8 in urine samples were obtained to determine atomoxetine, venlafaxine, and duloxetine with three concentrations of 5.0, 20.0, and 100.0 ng mL−1, respectively. Inter-day and intra-day RSD% were calculated by triplicate determination of atomoxetine, venlafaxine, and duloxetine at three concentrations of 10.0, 50.0 and 100.0 ng mL−1 and were between 3.2–4.3% and 3.8–4.6% in distiled water samples, and 4.8–5.7% and 5.0–5.8% in urine samples, respectively. Analysis of tap, river water, and two urine samples as real water and biological samples under optimum conditions exhibited recovery and standard deviation in the ranges of 90.2–96.9% and 3.84–5.74%, respectively, confirmed the proper ability of the method to determine atomoxetine, venlafaxine, and duloxetine in natural water and biological samples.KEYWORDS: Antidepressant drugsdispersive micro solid phase extractionMOF-on-MOFbiological samplesexperimental designmagnetic sorbent AcknowledgmentsThe authors express their appreciation with the Research Council of Islamic Azad University of Mashhad, Iran for financial support.Disclosure statementNo potential conflict of interest was reported by the author(s).Compliance with ethical standardsThe study has been carried out under the institutional and/or national research committee’s ethical standards and with the 1964 Helsinki declaration and its later amendments or comparable Ethical standards.CRediT authorship contribution statementAysir Alhmaunde: Writing e original draft, Investigation, Methodology, Data curation, Formal analysis, Resources.Mahboubeh Masrournia: Conceptualisation, Investigation, Writing e review & editing.Ali Javid: Conceptualisation, Investigation, Writing e review & editing.Supplementary dat
摘要托莫西汀、文拉法辛和度洛西汀是三种广泛用于治疗抑郁症的抗抑郁药物。由于这些药物的浓度低，对生物样品的基质效应高，因此确定这些药物是一项重大挑战。分散微固相萃取作为一种样品制备策略，在真实的水和生物样品中提取这些药物。利用Fe3O4纳米颗粒和溶胶-凝胶技术制备了一种新型磁性MOF-on-MOF吸附剂来提取这些药物。采用实验设计对微萃取工艺进行了两步优化。pH、吸附剂用量和解吸溶剂体积这三个因素显著影响分析物的提取，并使用中心复合设计进行了优化。最佳pH值、吸附剂用量和解吸溶剂体积分别为29 mg、6.5和150µL。在最佳条件下，测定水样中托莫西汀、文拉法辛和度洛西汀的线性范围分别为1.42 ~ 496、0.43 ~ 472和0.73 ~ 459 ng mL−1。托莫西汀、文拉法辛、度洛西汀的检出限分别为0.4、0.1、0.2 ng mL−1。在测定托莫西汀、文拉法辛和度洛西汀浓度分别为5.0、20.0和100.0 ng mL−1时，蒸馏水样品的预浓缩系数为462.4 ~ 511.4，尿液样品的预浓缩系数为450.7 ~ 489.8。通过对托莫西汀、文拉法辛和度洛西汀在10.0、50.0和100.0 ng mL−1三种浓度下的三次测定，计算其日间和日间RSD%，在蒸馏水样品中分别为3.2-4.3%和3.8-4.6%，在尿液样品中分别为4.8-5.7%和5.0-5.8%。自来水、河水和两种尿液作为真实水和生物样品，在最佳条件下的回收率和标准偏差分别为90.2 ~ 96.9%和3.84 ~ 5.74%，证实了该方法测定天然水和生物样品中托莫西汀、文拉法辛和度洛西汀的适宜性。关键词:抗抑郁药物;分散微固相萃取;mof -on- mof生物样品;实验设计;磁性吸附剂披露声明作者未报告潜在的利益冲突。遵守伦理标准本研究是在机构和/或国家研究委员会的伦理标准下进行的，并遵循1964年赫尔辛基宣言及其后来的修正案或类似的伦理标准。aysir Alhmaunde:撰写原稿，调查，方法论，数据管理，形式分析，资源。Mahboubeh Masrournia:概念化，调查，写作，评论和编辑。阿里·贾维德:概念化，调查，写作，审查和编辑。本文的补充数据可以在线访问https://doi.org/10.1080/03067319.2023.2276344。
{"title":"The simultaneous measurement of atomoxetine, venlafaxine, and duloxetine in actual water and biological samples requires the creation of a unique magnetic dispersive micro solid phase extraction sorbent based on MOF-on-MOF","authors":"Aysir Alhmaunde, Mahboubeh Masrournia, Ali Javid","doi":"10.1080/03067319.2023.2276344","DOIUrl":"https://doi.org/10.1080/03067319.2023.2276344","url":null,"abstract":"ABSTRACTAtomoxetine, venlafaxine, and duloxetine are three antidepressant drugs widely prescribed to treat this disorder. Determining these drugs is a major challenge due to their low concentration and high matrix effects on biological samples. Dispersive micro solid phase extraction was developed as a sample preparation strategy to extract these drugs in real water and biological samples. A novel sorbent containing a magnetic MOF-on-MOF was prepared to extract these drugs using Fe3O4 nanoparticle and Sol-gel technique. The microextraction procedure was optimised under two steps using experimental design. Three factors, including pH, sorbent amount, and desorption solvent volume, significantly affected the extraction of analytes and optimised using a central composite design. The optimum value of pH, sorbent amount, and desorption solvent volume was 29 mg, 6.5, and 150 µL. Under optimum conditions, the linear ranges for measuring atomoxetine, venlafaxine, and duloxetine in water samples were 1.42–496, 0.43–472, and 0.73–459 ng mL−1, respectively. The detection limits of atomoxetine, venlafaxine, and duloxetine were 0.4, 0.1, and 0.2 ng mL−1. High and proper preconcentration factors ranged from 462.4–511.4 in distiled water samples and 450.7–489.8 in urine samples were obtained to determine atomoxetine, venlafaxine, and duloxetine with three concentrations of 5.0, 20.0, and 100.0 ng mL−1, respectively. Inter-day and intra-day RSD% were calculated by triplicate determination of atomoxetine, venlafaxine, and duloxetine at three concentrations of 10.0, 50.0 and 100.0 ng mL−1 and were between 3.2–4.3% and 3.8–4.6% in distiled water samples, and 4.8–5.7% and 5.0–5.8% in urine samples, respectively. Analysis of tap, river water, and two urine samples as real water and biological samples under optimum conditions exhibited recovery and standard deviation in the ranges of 90.2–96.9% and 3.84–5.74%, respectively, confirmed the proper ability of the method to determine atomoxetine, venlafaxine, and duloxetine in natural water and biological samples.KEYWORDS: Antidepressant drugsdispersive micro solid phase extractionMOF-on-MOFbiological samplesexperimental designmagnetic sorbent AcknowledgmentsThe authors express their appreciation with the Research Council of Islamic Azad University of Mashhad, Iran for financial support.Disclosure statementNo potential conflict of interest was reported by the author(s).Compliance with ethical standardsThe study has been carried out under the institutional and/or national research committee’s ethical standards and with the 1964 Helsinki declaration and its later amendments or comparable Ethical standards.CRediT authorship contribution statementAysir Alhmaunde: Writing e original draft, Investigation, Methodology, Data curation, Formal analysis, Resources.Mahboubeh Masrournia: Conceptualisation, Investigation, Writing e review & editing.Ali Javid: Conceptualisation, Investigation, Writing e review & editing.Supplementary dat","PeriodicalId":13973,"journal":{"name":"International Journal of Environmental Analytical Chemistry","volume":"25 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136347690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-09DOI: 10.1080/03067319.2023.2269384
Bereket Tesfaye, Abera Gure, Tsegaye Girma Asere
ABSTRACTIn the present work, we proposed a novel method; dispersive solid-phase extraction followed by dispersive liquid–liquid microextraction for selective extraction and preconcentration of organochlorine pesticides in fruit juice samples. Parameters affecting the performances of both extraction steps have been rigorously studied and optimized. For the dispersive solid-phase extraction, zinc oxide-graphite carbon nitride was used as a sorbent for the first time. In the extraction, 100 mg of the sorbent was added to an aqueous solution. The content was then vortexed thoroughly to disperse the sorbent into the sample solution and to enhance the transfer of the analytes to the extraction phase (sorbent). The extracted analytes were then desorbed using 500 μL methanol. Subsequently, for the dispersive liquid-liquid microextraction, 50 μL of chloroform (as an extractant) was added to methanol-desorbed analytes and then rapidly injected into 5 mL deionised water. After centrifuging, 35 μL of the sedimented phase was withdrawn into an auto-sampler vial, and then 1 μL was injected into a gas chromatography-mass spectroscopy analysis. Under the optimum conditions, the proposed method showed satisfactory analytical performance characteristics: linearity ranging from 0.1–10.24 µg/L with coefficients of determinations (R2) from 0.9948–0.9995; The limit of detections ranging from 0.004–0.01 µg/L; intra- and inter-day precisions expressed as relative standard deviations ranging from 1.1–7.8%, and extraction recoveries varying from 80.8–109.2%. Generally, the proposed method is selective and efficient for the extraction and preconcentration of the target analytes from fruit juices and related matrices.KEYWORDS: Organochlorine pesticidesdispersive solid phase extractiondispersive liquid–liquid microextractionzinc oxide-graphite carbon nitridefruit juices AcknowledgmentsWe are grateful to the College of Natural Sciences, Jimma University for the financial support. Tesfaye, B also acknowledges Dire Dawa University for sponsoring his PhD study.Disclosure statementNo potential conflict of interest was reported by the author(s).
{"title":"Dispersive solid phase extraction using zinc oxide graphitic carbon nitride as sorbent followed by dispersive liquid–liquid microextraction for the determination of organochlorine pesticides from fruit juice samples","authors":"Bereket Tesfaye, Abera Gure, Tsegaye Girma Asere","doi":"10.1080/03067319.2023.2269384","DOIUrl":"https://doi.org/10.1080/03067319.2023.2269384","url":null,"abstract":"ABSTRACTIn the present work, we proposed a novel method; dispersive solid-phase extraction followed by dispersive liquid–liquid microextraction for selective extraction and preconcentration of organochlorine pesticides in fruit juice samples. Parameters affecting the performances of both extraction steps have been rigorously studied and optimized. For the dispersive solid-phase extraction, zinc oxide-graphite carbon nitride was used as a sorbent for the first time. In the extraction, 100 mg of the sorbent was added to an aqueous solution. The content was then vortexed thoroughly to disperse the sorbent into the sample solution and to enhance the transfer of the analytes to the extraction phase (sorbent). The extracted analytes were then desorbed using 500 μL methanol. Subsequently, for the dispersive liquid-liquid microextraction, 50 μL of chloroform (as an extractant) was added to methanol-desorbed analytes and then rapidly injected into 5 mL deionised water. After centrifuging, 35 μL of the sedimented phase was withdrawn into an auto-sampler vial, and then 1 μL was injected into a gas chromatography-mass spectroscopy analysis. Under the optimum conditions, the proposed method showed satisfactory analytical performance characteristics: linearity ranging from 0.1–10.24 µg/L with coefficients of determinations (R2) from 0.9948–0.9995; The limit of detections ranging from 0.004–0.01 µg/L; intra- and inter-day precisions expressed as relative standard deviations ranging from 1.1–7.8%, and extraction recoveries varying from 80.8–109.2%. Generally, the proposed method is selective and efficient for the extraction and preconcentration of the target analytes from fruit juices and related matrices.KEYWORDS: Organochlorine pesticidesdispersive solid phase extractiondispersive liquid–liquid microextractionzinc oxide-graphite carbon nitridefruit juices AcknowledgmentsWe are grateful to the College of Natural Sciences, Jimma University for the financial support. Tesfaye, B also acknowledges Dire Dawa University for sponsoring his PhD study.Disclosure statementNo potential conflict of interest was reported by the author(s).","PeriodicalId":13973,"journal":{"name":"International Journal of Environmental Analytical Chemistry","volume":" 38","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135241997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-08DOI: 10.1080/03067319.2023.2277881
Giovanni Caria, Baghdad Ouddane, Sopheak Net, Nicolas Proix, Claire Froger
ABSTRACTAgricultural soils are not controlled in France for the massive use of pesticides. The quadrupole mass spectrometer is used for targeted analysis of a few dozen pesticides, while the high-resolution time-of-flight quadrupole mass spectrometer (QTOF-MS) allows both targeted and non-targeted analysis of hundreds of pesticides. In this study, a targeted method was developed in soils using pressurised-liquid extraction (PLE) and liquid chromatography (LC) coupled with a QTOF-MS. This method development was necessary to carry out next suspect and non-target screening in soils and has been validated for triazines, phenylureas and emerging pesticides in soils. The internal calibration of pesticides was validated for low levels (0.5 to 12.5 µg L−1) and high levels (12.5 to 400 µg L−1) using labelled internal standards. The determination coefficient (R2) of calibration curve of each pesticide was greater than 0.99. Excepted DCPU and IPPU, the mean recoveries of pesticides in five reference soils spiked at 40 µg kg−1 and 10 µg kg−1 were greater than 93.5% and 106.2%, and the variation coefficients lower than 14.7% and 22.5%, respectively. So, multiplier factors were applied to the quantification results of DCPU and IPPU, respectively, 2.5 and 1.7 for correction. This validated method has been applied to a selection of 40 French soils of Centre-Val de Loire region. The limit of quantification (LOQ) of pesticides varied between 0.005 and 0.175 µg kg−1 in soils. Seven pesticides were the most detected in soils. Seventeen pesticides were detected between 10 and 50% of cases and very low detection frequencies (<10%) were found for 10 pesticides in soils. The mean concentrations were 0.730 µg kg−1 dw for triazines, 1.367 µg kg−1 dw for phenylureas and 7.638 µg kg−1 dw for emerging pesticides. DCPMU and epoxiconazole were detected in all the 40 soils.KEYWORDS: Pesticidessoilpressurised-liquid extractionliquid chromatographytime-of-flightmass spectrometry AcknowledgmentsColleagues of INRAE Info&Sols in Orléans (France), responsible for the French Soil Quality Monitoring Network (RMQS), are gratefully acknowledged for providing the soil samples and informations about their agricultural uses and phytosanitary treatments.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by ‘AgroEcoSystem’, a scientific department of INRAE (National Research Institute for Agriculture, Food and Environment).
在法国，由于大量使用农药，农业土壤没有得到控制。四极杆质谱仪用于几十种农药的靶向分析，而高分辨率飞行时间四极杆质谱仪(QTOF-MS)可用于数百种农药的靶向和非靶向分析。本研究采用加压液萃取(PLE)、液相色谱(LC)和QTOF-MS相结合的方法对土壤进行了定向分析。该方法的开发对于开展土壤中的下一个可疑和非目标筛选是必要的，并已在土壤中的三嗪类、苯脲类和新兴农药中得到验证。使用标记的内部标准品对低水平(0.5至12.5µg L−1)和高水平(12.5至400µg L−1)的农药进行了内部校准。各农药标定曲线的决定系数R2均大于0.99。除DCPU和IPPU外，在40µg kg - 1和10µg kg - 1条件下，5种对照土壤中农药的平均回收率分别大于93.5%和106.2%，变异系数分别小于14.7%和22.5%。因此，对DCPU和IPPU的量化结果分别采用乘数因子2.5和1.7进行校正。该方法已被应用于法国卢瓦尔河谷中部地区40种土壤的选择。土壤中农药的定量限(LOQ)在0.005 ~ 0.175µg kg−1之间。土壤中检出最多的农药有7种。土壤中17种农药的检出率在10% ~ 50%之间，其中10种农药检出率极低(<10%)。三嗪类、苯脲类和新兴农药的平均浓度分别为0.730µg kg - 1 dw、1.367µg kg - 1 dw和7.638µg kg - 1 dw。40种土壤中均检测到DCPMU和环氧康唑。关键词:农药，土壤，压力液体萃取，液相色谱，飞行时间质谱感谢法国orlsamans的INRAE Info&Sols的同事，他们负责法国土壤质量监测网络(RMQS)，感谢他们提供的土壤样品及其农业用途和植物检疫处理方面的信息。披露声明作者未报告潜在的利益冲突。本研究得到了印度国家农业、食品和环境研究所(INRAE)科学部门“AgroEcoSystem”的支持。
{"title":"Liquid chromatography - high-resolution quadrupole time-of-flight mass spectrometry analysis of pesticides in French agricultural soils","authors":"Giovanni Caria, Baghdad Ouddane, Sopheak Net, Nicolas Proix, Claire Froger","doi":"10.1080/03067319.2023.2277881","DOIUrl":"https://doi.org/10.1080/03067319.2023.2277881","url":null,"abstract":"ABSTRACTAgricultural soils are not controlled in France for the massive use of pesticides. The quadrupole mass spectrometer is used for targeted analysis of a few dozen pesticides, while the high-resolution time-of-flight quadrupole mass spectrometer (QTOF-MS) allows both targeted and non-targeted analysis of hundreds of pesticides. In this study, a targeted method was developed in soils using pressurised-liquid extraction (PLE) and liquid chromatography (LC) coupled with a QTOF-MS. This method development was necessary to carry out next suspect and non-target screening in soils and has been validated for triazines, phenylureas and emerging pesticides in soils. The internal calibration of pesticides was validated for low levels (0.5 to 12.5 µg L−1) and high levels (12.5 to 400 µg L−1) using labelled internal standards. The determination coefficient (R2) of calibration curve of each pesticide was greater than 0.99. Excepted DCPU and IPPU, the mean recoveries of pesticides in five reference soils spiked at 40 µg kg−1 and 10 µg kg−1 were greater than 93.5% and 106.2%, and the variation coefficients lower than 14.7% and 22.5%, respectively. So, multiplier factors were applied to the quantification results of DCPU and IPPU, respectively, 2.5 and 1.7 for correction. This validated method has been applied to a selection of 40 French soils of Centre-Val de Loire region. The limit of quantification (LOQ) of pesticides varied between 0.005 and 0.175 µg kg−1 in soils. Seven pesticides were the most detected in soils. Seventeen pesticides were detected between 10 and 50% of cases and very low detection frequencies (<10%) were found for 10 pesticides in soils. The mean concentrations were 0.730 µg kg−1 dw for triazines, 1.367 µg kg−1 dw for phenylureas and 7.638 µg kg−1 dw for emerging pesticides. DCPMU and epoxiconazole were detected in all the 40 soils.KEYWORDS: Pesticidessoilpressurised-liquid extractionliquid chromatographytime-of-flightmass spectrometry AcknowledgmentsColleagues of INRAE Info&Sols in Orléans (France), responsible for the French Soil Quality Monitoring Network (RMQS), are gratefully acknowledged for providing the soil samples and informations about their agricultural uses and phytosanitary treatments.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by ‘AgroEcoSystem’, a scientific department of INRAE (National Research Institute for Agriculture, Food and Environment).","PeriodicalId":13973,"journal":{"name":"International Journal of Environmental Analytical Chemistry","volume":"8 1‐2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135392360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-07DOI: 10.1080/03067319.2023.2277891
Bharathi Santhanabharathi, Kumara Perumal Pradhoshini, Munawar Suhail Ahmed, Marckasagayam Priyadharshini, Mohamat Hanifa Shafeeka Parveen, Lubna Alam, Ismail Md Mofizur Rahman, Van Hao Duong, Mehraj Ud Din War, Mohamed Saiyad Musthafa
ABSTRACTThe source, fate and transport of pollutants are of typical interest in environmental chemistry, which focuses on the presence and effects of chemicals in soil and water bodies. In this setting, minimising pollutant sources and limiting pollution generation are key factors in achieving environmental sustainability. Over the past few decades, novel approaches were devised by researchers across the world to resolve disputes related to major pollutions in soil, air and water bodies. However, there is still a need to address the research interest in radionuclides as contaminants. The first step in addressing concerns related to radionuclide contamination would be to develop complete knowledge and a database on the accumulation, transport rate, and fate of radionuclides in both natural high background radiation areas and other locations of the world. The current review is an attempt to provide information about this, where it briefs out the A.C, C.R. and T.F of the parental radionuclides (238U, 232Th, 40K) and their progeny nuclides (210Po and 210Pb) in various media (soil, sediments, rock, and water), as well as in the food chains of aquatic environments close to areas contaminated with radionuclides. It discusses the disagreements around radio-isotopes in these regions and draws attention to the threat it poses to the local biota and population. Exceeding concentration of radionuclides than the recommended reference level in such areas shall open up possible opportunity of conducting epidemiological studies related to the health effects of the inhabitants. It shall also pave a way for initiating future research activities destined in formulation of remedial measures for the welfare of biodiversity.KEYWORDS: Radionuclidessedimentsoilwateraquatic biotageochemical transfer AcknowledgmentsThe authors are thankful to the Chairman, Honourable Secretary & Correspondent, Principal, Vice-Principals (Academic & Administration) P.G. & Research Department of Zoology, The New College (Autonomous), Chennai for Institutional support. We profoundly thank Department of Science and Technology – Science and Engineering Research Board (DST-SERB), Government of India, New Delhi for funding the project [File No.: ECR/2017/001268, dated 18.03.2019].Disclosure statementNo potential conflict of interest was reported by the author(s).Author’s contributionBharathi Santhanabharathi - Conceptualisation and design, Data curation, Kumara Perumal Pradhoshini – Conceptualisation and design, Manuscript preparation – writing original manuscript, Munawar Suhail Ahmed – Data curation, Manuscript preparation – review and editing, Marckasagayam Priyadharshini – Manuscript preparation – review and editing, Mohamat Hanifa Shafeeka Parveen – Manuscript preparation – review and editing, Lubna Alam – statistical analysis and data interpretation, Ismail Md Mofizur Rahman – statistical analysis and data interpretation, Van Hao Duong – Imaging analysis, Mehraj Ud Din War – Table preparat
摘要污染物的来源、归宿和迁移是环境化学研究的热点，主要研究化学物质在土壤和水体中的存在及其影响。在这种情况下，尽量减少污染源和限制污染的产生是实现环境可持续性的关键因素。在过去的几十年里，世界各地的研究人员设计了新的方法来解决与土壤、空气和水体中的主要污染有关的争端。然而，仍有必要解决放射性核素作为污染物的研究兴趣。处理与放射性核素污染有关的问题的第一步将是发展关于放射性核素在自然高本底辐射地区和世界其他地点的积累、传输速率和命运的完整知识和数据库。本综述试图提供这方面的信息，简要介绍了母体放射性核素(238U、232Th、40K)及其子代放射性核素(210Po和210Pb)在各种介质(土壤、沉积物、岩石和水)以及靠近放射性核素污染区域的水生环境食物链中的A.C c、c.r和T.F。它讨论了这些地区关于放射性同位素的分歧，并提请注意它对当地生物群和人口构成的威胁。这些地区的放射性核素浓度超过建议参考水平，将为开展与居民健康影响有关的流行病学研究提供可能的机会。它还将为今后开展旨在为生物多样性拟订补救措施的研究活动铺平道路。作者感谢金奈新学院(自治)动物学部主席、名誉秘书兼通讯员、校长、副校长(学术与行政)P.G.与研究部的机构支持。我们深切感谢新德里印度政府科学和技术部-科学和工程研究委员会(dst -塞族)为该项目提供资金。[ECR/2017/001268，日期:18.03.2019]。披露声明作者未报告潜在的利益冲突。作者的贡献:bharathi Santhanabharathi -概念化和设计，数据管理，Kumara Perumal Pradhoshini -概念化和设计，手稿准备-编写原始手稿，Munawar Suhail Ahmed -数据管理，手稿准备-审查和编辑，Marckasagayam Priyadharshini -手稿准备-审查和编辑，Mohamat Hanifa Shafeeka Parveen -手稿准备-审查和编辑，Lubna Alam -统计分析和数据解释，Ismail Md Mofizur Rahman -统计分析和数据解释，Van Hao Duong -成像分析，Mehraj Ud Din War -表格准备，Mohamed Saiyad Musthafa -手稿的最终验证和批准。数据可用性声明本研究过程中产生或分析的所有数据都包含在这篇发表的文章[及其补充信息文件]中。其他信息资金作者报告没有与本文所述工作相关的资金。
{"title":"Source, fate and transfer of primordial radionuclides as potential contaminants in environmental matrices of high and low background radiation areas – a critical review","authors":"Bharathi Santhanabharathi, Kumara Perumal Pradhoshini, Munawar Suhail Ahmed, Marckasagayam Priyadharshini, Mohamat Hanifa Shafeeka Parveen, Lubna Alam, Ismail Md Mofizur Rahman, Van Hao Duong, Mehraj Ud Din War, Mohamed Saiyad Musthafa","doi":"10.1080/03067319.2023.2277891","DOIUrl":"https://doi.org/10.1080/03067319.2023.2277891","url":null,"abstract":"ABSTRACTThe source, fate and transport of pollutants are of typical interest in environmental chemistry, which focuses on the presence and effects of chemicals in soil and water bodies. In this setting, minimising pollutant sources and limiting pollution generation are key factors in achieving environmental sustainability. Over the past few decades, novel approaches were devised by researchers across the world to resolve disputes related to major pollutions in soil, air and water bodies. However, there is still a need to address the research interest in radionuclides as contaminants. The first step in addressing concerns related to radionuclide contamination would be to develop complete knowledge and a database on the accumulation, transport rate, and fate of radionuclides in both natural high background radiation areas and other locations of the world. The current review is an attempt to provide information about this, where it briefs out the A.C, C.R. and T.F of the parental radionuclides (238U, 232Th, 40K) and their progeny nuclides (210Po and 210Pb) in various media (soil, sediments, rock, and water), as well as in the food chains of aquatic environments close to areas contaminated with radionuclides. It discusses the disagreements around radio-isotopes in these regions and draws attention to the threat it poses to the local biota and population. Exceeding concentration of radionuclides than the recommended reference level in such areas shall open up possible opportunity of conducting epidemiological studies related to the health effects of the inhabitants. It shall also pave a way for initiating future research activities destined in formulation of remedial measures for the welfare of biodiversity.KEYWORDS: Radionuclidessedimentsoilwateraquatic biotageochemical transfer AcknowledgmentsThe authors are thankful to the Chairman, Honourable Secretary & Correspondent, Principal, Vice-Principals (Academic & Administration) P.G. & Research Department of Zoology, The New College (Autonomous), Chennai for Institutional support. We profoundly thank Department of Science and Technology – Science and Engineering Research Board (DST-SERB), Government of India, New Delhi for funding the project [File No.: ECR/2017/001268, dated 18.03.2019].Disclosure statementNo potential conflict of interest was reported by the author(s).Author’s contributionBharathi Santhanabharathi - Conceptualisation and design, Data curation, Kumara Perumal Pradhoshini – Conceptualisation and design, Manuscript preparation – writing original manuscript, Munawar Suhail Ahmed – Data curation, Manuscript preparation – review and editing, Marckasagayam Priyadharshini – Manuscript preparation – review and editing, Mohamat Hanifa Shafeeka Parveen – Manuscript preparation – review and editing, Lubna Alam – statistical analysis and data interpretation, Ismail Md Mofizur Rahman – statistical analysis and data interpretation, Van Hao Duong – Imaging analysis, Mehraj Ud Din War – Table preparat","PeriodicalId":13973,"journal":{"name":"International Journal of Environmental Analytical Chemistry","volume":"2 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135476044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-07DOI: 10.1080/03067319.2023.2273335
Z. M. Saigl, O. A. Aljuaid
ABSTRACTThis study was focused on testing and evaluating the adapalene drug as a novel and selective chromogenic reagent for estimating the manganese in biological (blood plasma), pharmaceutical (syrup) and drinking water samples. The limit of detection and quantification were 0.0448 and 0.1492 μg mL−1, respectively. The effective molar absorptivity (ε) was 2.0297 × 104 L.mol−1.cm−1. The method’s sensitivity was 4.2786 × 10−4 μg cm−2 without interference with the common ions. The results demonstrated that the stability constant of the [Mn(II) – ADP] complex was 3.7238 × 107. An excellent and perfect recovery percentage of manganese(II) was achieved in tested samples, which ranged from (98–100%), (99–105%), and (97–101%) in blood plasma, medicated syrup and drinking water, respectively. Moreover, the developed method was validated by the reference ICP-OES method. The results revealed perfect compatibility between the results obtained by the developed and ICP-OES method.KEYWORDS: Adapaleneblood plasmadrinking watermanganesepharmaceutical sampleUV-VIS spectroscop Disclosure statementNo potential conflict of interest was reported by the author(s).
{"title":"Determination of manganese(II) using adapalene as a novel chromogenic reagent","authors":"Z. M. Saigl, O. A. Aljuaid","doi":"10.1080/03067319.2023.2273335","DOIUrl":"https://doi.org/10.1080/03067319.2023.2273335","url":null,"abstract":"ABSTRACTThis study was focused on testing and evaluating the adapalene drug as a novel and selective chromogenic reagent for estimating the manganese in biological (blood plasma), pharmaceutical (syrup) and drinking water samples. The limit of detection and quantification were 0.0448 and 0.1492 μg mL−1, respectively. The effective molar absorptivity (ε) was 2.0297 × 104 L.mol−1.cm−1. The method’s sensitivity was 4.2786 × 10−4 μg cm−2 without interference with the common ions. The results demonstrated that the stability constant of the [Mn(II) – ADP] complex was 3.7238 × 107. An excellent and perfect recovery percentage of manganese(II) was achieved in tested samples, which ranged from (98–100%), (99–105%), and (97–101%) in blood plasma, medicated syrup and drinking water, respectively. Moreover, the developed method was validated by the reference ICP-OES method. The results revealed perfect compatibility between the results obtained by the developed and ICP-OES method.KEYWORDS: Adapaleneblood plasmadrinking watermanganesepharmaceutical sampleUV-VIS spectroscop Disclosure statementNo potential conflict of interest was reported by the author(s).","PeriodicalId":13973,"journal":{"name":"International Journal of Environmental Analytical Chemistry","volume":"8 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135479978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-07DOI: 10.1080/03067319.2023.2277888
Najihah Rameli, Amanatuzzakiah Abdul Halim, Saeda Jannah Kushairi, Nuur Fahanis Che Lah
ABSTRACTThe extensive use of atrazine as a pesticide in agricultural practices poses a significant risk to the environment and human health. Atrazine, when applied to plants, has the potential to migrate through the soil and contaminate groundwater sources. Consequently, there is an urgent need to explore alternative methods for detecting atrazine. This study aimed to investigate the quantification of atrazine using molecularly imprinted polymer (MIP) and to assess the adsorption performance and kinetics of the MIPs using various isotherm and kinetic adsorption models. MIP was synthesised with two distinct functional monomers: methacrylic acid (MAA) and acrylamide (AA). Computational analysis was employed to estimate the binding affinity of these monomers towards atrazine. Subsequently, results from adsorption capacity study indicated a higher binding affinity for MAA compared to AA with values of 0.92 mg/g and 0.48 mg/g, respectively. These findings aligned with the simulated data from the docking analysis. Moreover, the adsorption mechanism of atrazine towards MIP-MAA and MIP-AA was best represented by Jovanovic model, followed by the Langmuir, Freundlich and Linear models. While for kinetics analysis, the Elovich model was chosen as the best fit. In conclusion, the selection of the functional monomer is of utmost importance in designing MIPs as it facilitates specific interactions with analyte molecules and enhances the performance of the MIPs.KEYWORDS: Molecularly imprinted polymeratrazineadsorption isothermfunctional monomerbinding affinity Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis research was supported by IIUM Research Initiative Grant Scheme (Flagship) 2019 [IRF19-006-0006] from the Ministry of Higher Education, Malaysia.
{"title":"Adsorption isotherm and kinetic analysis of molecularly imprinted polymer with two functional monomers for quantification of atrazine","authors":"Najihah Rameli, Amanatuzzakiah Abdul Halim, Saeda Jannah Kushairi, Nuur Fahanis Che Lah","doi":"10.1080/03067319.2023.2277888","DOIUrl":"https://doi.org/10.1080/03067319.2023.2277888","url":null,"abstract":"ABSTRACTThe extensive use of atrazine as a pesticide in agricultural practices poses a significant risk to the environment and human health. Atrazine, when applied to plants, has the potential to migrate through the soil and contaminate groundwater sources. Consequently, there is an urgent need to explore alternative methods for detecting atrazine. This study aimed to investigate the quantification of atrazine using molecularly imprinted polymer (MIP) and to assess the adsorption performance and kinetics of the MIPs using various isotherm and kinetic adsorption models. MIP was synthesised with two distinct functional monomers: methacrylic acid (MAA) and acrylamide (AA). Computational analysis was employed to estimate the binding affinity of these monomers towards atrazine. Subsequently, results from adsorption capacity study indicated a higher binding affinity for MAA compared to AA with values of 0.92 mg/g and 0.48 mg/g, respectively. These findings aligned with the simulated data from the docking analysis. Moreover, the adsorption mechanism of atrazine towards MIP-MAA and MIP-AA was best represented by Jovanovic model, followed by the Langmuir, Freundlich and Linear models. While for kinetics analysis, the Elovich model was chosen as the best fit. In conclusion, the selection of the functional monomer is of utmost importance in designing MIPs as it facilitates specific interactions with analyte molecules and enhances the performance of the MIPs.KEYWORDS: Molecularly imprinted polymeratrazineadsorption isothermfunctional monomerbinding affinity Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis research was supported by IIUM Research Initiative Grant Scheme (Flagship) 2019 [IRF19-006-0006] from the Ministry of Higher Education, Malaysia.","PeriodicalId":13973,"journal":{"name":"International Journal of Environmental Analytical Chemistry","volume":"48 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135476319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-05DOI: 10.1080/03067319.2023.2259314
G. A. E. Mostafa, A. Alasiri, H. AlRabiah, M. F. El-Tohamy
ABSTRACTThe ICP-MS method was used to determine the concentrations of five heavy metals: Cadmium (Cd), lead (Pb), zinc (Zn), mercury (Hg), and nickel (Ni). A total of 36 samples of cosmetic products (makeup, eye shadow, and mascara) of various brands were chosen from those available in Riyadh, Saudi Arabia. Several analytical parameters, such as accuracy, precision, linearity, the lower limit of quantification (LOQ), and the lower limit of detection (LOD), were assessed to determine the validity of the proposed method. The determination of Cd, Pb, Zn, Hg, and Ni was verified for accuracy and precision. The results of the determination of studied heavy metals concentration in cosmetic samples reveal that, the concentrations of Cd, Pb, Zn, Hg and Ni ranged from 0.03–0.53, 10.28–107.01, 14.49–867.12, 1.75–6.45 and 4.22–31.36 µg/g, respectively. In all samples of cosmetic products, the concentrations of Cd and Hg were deemed to be within the normal range. However, the concentration of Pb was higher than the recommended value by the World Health Organization (WHO). Nickel concentration was measured with a detection limit lower than the WHO recommended level, but no suggested value for Zn, which is critical for mitochondria, was found. Health risks related to these metal intakes through dermal exposure pathways are assessed using the total hazard quotient (THQs), total hazard index (HI), chronic daily intake (CDI), and hazard quotient (HQ). Despite the low risks of cancer and non-cancer caused by using these cosmetic products, testing results for cancer and non-cancer risks for these products must be regularly examined. Therefore, constant monitoring of cosmetic products, particularly with regard to heavy metal contamination, should be implemented to maintain human safety and security.KEYWORDS: Heavy metalcosmetovigilancehealth riskHQTHQsCDI AcknowledgmentsThe authors extend their appreciation to the Researchers Supporting Project, King Saud University, for funding this work through grant no. RSP2023R501Disclosure statementNo potential conflict of interest was reported by the author(s).Supplemental dataSupplemental data for this article can be accessed online at https://doi.org/10.1080/03067319.2023.2259314.Additional informationFundingThis research was funded by the Researchers Supporting Project, King Saud University, through grant no. RSP2023R501.
{"title":"Evaluation of Cd, Hg, pb, Zn and Ni in selected cosmetic products: risk assessment for human health","authors":"G. A. E. Mostafa, A. Alasiri, H. AlRabiah, M. F. El-Tohamy","doi":"10.1080/03067319.2023.2259314","DOIUrl":"https://doi.org/10.1080/03067319.2023.2259314","url":null,"abstract":"ABSTRACTThe ICP-MS method was used to determine the concentrations of five heavy metals: Cadmium (Cd), lead (Pb), zinc (Zn), mercury (Hg), and nickel (Ni). A total of 36 samples of cosmetic products (makeup, eye shadow, and mascara) of various brands were chosen from those available in Riyadh, Saudi Arabia. Several analytical parameters, such as accuracy, precision, linearity, the lower limit of quantification (LOQ), and the lower limit of detection (LOD), were assessed to determine the validity of the proposed method. The determination of Cd, Pb, Zn, Hg, and Ni was verified for accuracy and precision. The results of the determination of studied heavy metals concentration in cosmetic samples reveal that, the concentrations of Cd, Pb, Zn, Hg and Ni ranged from 0.03–0.53, 10.28–107.01, 14.49–867.12, 1.75–6.45 and 4.22–31.36 µg/g, respectively. In all samples of cosmetic products, the concentrations of Cd and Hg were deemed to be within the normal range. However, the concentration of Pb was higher than the recommended value by the World Health Organization (WHO). Nickel concentration was measured with a detection limit lower than the WHO recommended level, but no suggested value for Zn, which is critical for mitochondria, was found. Health risks related to these metal intakes through dermal exposure pathways are assessed using the total hazard quotient (THQs), total hazard index (HI), chronic daily intake (CDI), and hazard quotient (HQ). Despite the low risks of cancer and non-cancer caused by using these cosmetic products, testing results for cancer and non-cancer risks for these products must be regularly examined. Therefore, constant monitoring of cosmetic products, particularly with regard to heavy metal contamination, should be implemented to maintain human safety and security.KEYWORDS: Heavy metalcosmetovigilancehealth riskHQTHQsCDI AcknowledgmentsThe authors extend their appreciation to the Researchers Supporting Project, King Saud University, for funding this work through grant no. RSP2023R501Disclosure statementNo potential conflict of interest was reported by the author(s).Supplemental dataSupplemental data for this article can be accessed online at https://doi.org/10.1080/03067319.2023.2259314.Additional informationFundingThis research was funded by the Researchers Supporting Project, King Saud University, through grant no. RSP2023R501.","PeriodicalId":13973,"journal":{"name":"International Journal of Environmental Analytical Chemistry","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135725838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-05DOI: 10.1080/03067319.2023.2278752
Dihua Wu, Jiangwei Zhu, Li Fu
ABSTRACTGraphene quantum dots (GQDs) have emerged as promising nanomaterials for electrochemical sensing due to their unique optical, electronic and catalytic properties. GQDs can be synthesised using top-down and bottom-up approaches, with green synthesis gaining popularity. The size, surface chemistry and doping of GQDs affect their electrochemical performance for sensing applications. GQDs enhance electron transfer and provide catalytic sites for signal amplification in electrochemical sensors for diverse analytes including neurotransmitters, biomarkers, metal ions and pollutants. However, challenges remain in improving GQD synthesis yield, property control, sensor stability and selectivity. This review summarises recent advances in GQD synthesis methods, strategies for property modulation, and applications in electrochemical sensors for biomedical, environmental and food analysis. The unique properties of GQDs that enable enhanced sensitivity and selectivity of sensors are discussed. Future research directions to address current challenges and realise the full potential of GQDs for next-generation sensor technology are also presented.KEYWORDS: Graphene quantum dotselectrochemical sensingpropertiesapplicationssensorsbiosensors Disclosure statementNo potential conflict of interest was reported by the author(s).
{"title":"Quantum leap for electroanalysis: graphene dots take electrochemical sensing to the next level","authors":"Dihua Wu, Jiangwei Zhu, Li Fu","doi":"10.1080/03067319.2023.2278752","DOIUrl":"https://doi.org/10.1080/03067319.2023.2278752","url":null,"abstract":"ABSTRACTGraphene quantum dots (GQDs) have emerged as promising nanomaterials for electrochemical sensing due to their unique optical, electronic and catalytic properties. GQDs can be synthesised using top-down and bottom-up approaches, with green synthesis gaining popularity. The size, surface chemistry and doping of GQDs affect their electrochemical performance for sensing applications. GQDs enhance electron transfer and provide catalytic sites for signal amplification in electrochemical sensors for diverse analytes including neurotransmitters, biomarkers, metal ions and pollutants. However, challenges remain in improving GQD synthesis yield, property control, sensor stability and selectivity. This review summarises recent advances in GQD synthesis methods, strategies for property modulation, and applications in electrochemical sensors for biomedical, environmental and food analysis. The unique properties of GQDs that enable enhanced sensitivity and selectivity of sensors are discussed. Future research directions to address current challenges and realise the full potential of GQDs for next-generation sensor technology are also presented.KEYWORDS: Graphene quantum dotselectrochemical sensingpropertiesapplicationssensorsbiosensors Disclosure statementNo potential conflict of interest was reported by the author(s).","PeriodicalId":13973,"journal":{"name":"International Journal of Environmental Analytical Chemistry","volume":"104 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135726079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-30DOI: 10.1080/03067319.2023.2271845
Erkan Kırıs, Ömer Zilan
{"title":"Measurements of some radionuclides in coffee samples using gamma-ray spectrometry and evaluating radiological health risk to the Turkish public","authors":"Erkan Kırıs, Ömer Zilan","doi":"10.1080/03067319.2023.2271845","DOIUrl":"https://doi.org/10.1080/03067319.2023.2271845","url":null,"abstract":"","PeriodicalId":13973,"journal":{"name":"International Journal of Environmental Analytical Chemistry","volume":"410 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136069476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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