Pub Date : 2023-12-13DOI: 10.1080/03601234.2023.2282917
Ivelina Mitkova Nikolova
One of the major insect pests in Pisum sativum L. (is Acyrthosiphon pisum Harris (Hemiptera: pests in Pisum sativum L. (Hemiptera: Aphididae) is Acyrthosiphon pisum Harris (Hemiptera: Aphididae). A...
Pisum sativum L. 的主要害虫之一是 Acyrthosiphon pisum Harris（半翅目：蚜虫科）。A...
{"title":"Markers of resistance to pea aphid, Acyrthosiphon pisum Harris in Pisum sativum L. accessions","authors":"Ivelina Mitkova Nikolova","doi":"10.1080/03601234.2023.2282917","DOIUrl":"https://doi.org/10.1080/03601234.2023.2282917","url":null,"abstract":"One of the major insect pests in Pisum sativum L. (is Acyrthosiphon pisum Harris (Hemiptera: pests in Pisum sativum L. (Hemiptera: Aphididae) is Acyrthosiphon pisum Harris (Hemiptera: Aphididae). A...","PeriodicalId":15670,"journal":{"name":"Journal of Environmental Science and Health, Part B","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138689045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-10DOI: 10.1080/03601234.2022.2084311
Lorena Dornelas Marsolla, G. M. Brito, J. Freitas, Edumar R Cabral Coelho
Abstract The presence of microcontaminants in the water supply system offers adverse impacts. This study analyzed the performance of two powdered activated carbons (PAC1 and PAC2) in the removal of 2,4-D herbicide in ultrapure water (UW) and natural water (NW) to verify the influence of natural organic matter (NOM) on the adsorptive process. The properties of PAC1 and PAC2 were analyzed by textural analysis, FTIR, TG, pH, XDR, NMR. The specific surface area of PAC2 was lower than PAC1 and PAC2 showed better adsorption capacity in UW (37.04 mg.g−1) and in NW (8.06 mg.g−1). The results of experiments performed in natural water showed that both activated carbons had reduced 2,4-D adsorption capacity in the presence of NOM, since it may compete for the same adsorption sites or block the access of the 2,4-D molecule to the pores of the activated carbon. PAC2 showed a higher mesopores percentage, decreasing the effects caused by NOM in 2,4-D adsorption. The use of activated carbons with varying pore sizes for the removal of microcontaminants is recommended, especially in NW. This result contributes to the choice of the adsorbent type to be applied in water treatment plants.
{"title":"Removing 2,4-D micropollutant herbicide using powdered activated carbons: the influence of different aqueous systems on adsorption process","authors":"Lorena Dornelas Marsolla, G. M. Brito, J. Freitas, Edumar R Cabral Coelho","doi":"10.1080/03601234.2022.2084311","DOIUrl":"https://doi.org/10.1080/03601234.2022.2084311","url":null,"abstract":"Abstract The presence of microcontaminants in the water supply system offers adverse impacts. This study analyzed the performance of two powdered activated carbons (PAC1 and PAC2) in the removal of 2,4-D herbicide in ultrapure water (UW) and natural water (NW) to verify the influence of natural organic matter (NOM) on the adsorptive process. The properties of PAC1 and PAC2 were analyzed by textural analysis, FTIR, TG, pH, XDR, NMR. The specific surface area of PAC2 was lower than PAC1 and PAC2 showed better adsorption capacity in UW (37.04 mg.g−1) and in NW (8.06 mg.g−1). The results of experiments performed in natural water showed that both activated carbons had reduced 2,4-D adsorption capacity in the presence of NOM, since it may compete for the same adsorption sites or block the access of the 2,4-D molecule to the pores of the activated carbon. PAC2 showed a higher mesopores percentage, decreasing the effects caused by NOM in 2,4-D adsorption. The use of activated carbons with varying pore sizes for the removal of microcontaminants is recommended, especially in NW. This result contributes to the choice of the adsorbent type to be applied in water treatment plants.","PeriodicalId":15670,"journal":{"name":"Journal of Environmental Science and Health, Part B","volume":"1 1","pages":"588 - 596"},"PeriodicalIF":0.0,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90310306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The controlled release formulations (CRFs) are considered an effective way to solve damage to the environment caused by traditional pesticide formulations. To change the defects of traditional neonicotinoid formulations that dissolve quickly in soil, three types of thiamethoxam (TM) CRFs microspheres with content of 20% TM were prepared using microcrystalline wax (MK) as the matrix, laurate acid tapioca starch ester (MSK) and stearyl dehydroabietic acid ester (MDK) as the regulators of ingredient release. The release behavior of CRFs microspheres in water and soil showed that the microspheres had superior stability and different TM sustained-release periods, and TM release of the microspheres in soil was faster than that in water. The release rate is TM/MDK > TM/MSK > TM/MK. In water, the release of thiamethoxam technical was finished after 38 hours. However, for TM/MK, the release rate was 94% after 240 hours, and the release time was extended by 6 times. Meanwhile, TM/MDK has a particular pH-responsive release. Research shows that using microcrystalline wax as the matrix, by adding MSK or MDK to adjust the release of ingredients, pesticide CRFs microspheres with different release periods can be prepared to achieve the purpose of controlling the release of pesticides.
{"title":"Study on the preparation of sustained-release thiamethoxam microspheres by blending microcrystalline wax with tapioca starch ester or dehydroabietic acid ester as the matrix","authors":"Linlin Wang, Q. Hu, Yanmin Huang, Qipeng Xiong, Yong Chen, Chun-fang Gan, Yuan-Qing Zhang, Guoqin Cui, Jianguo Cui","doi":"10.1080/03601234.2022.2079908","DOIUrl":"https://doi.org/10.1080/03601234.2022.2079908","url":null,"abstract":"Abstract The controlled release formulations (CRFs) are considered an effective way to solve damage to the environment caused by traditional pesticide formulations. To change the defects of traditional neonicotinoid formulations that dissolve quickly in soil, three types of thiamethoxam (TM) CRFs microspheres with content of 20% TM were prepared using microcrystalline wax (MK) as the matrix, laurate acid tapioca starch ester (MSK) and stearyl dehydroabietic acid ester (MDK) as the regulators of ingredient release. The release behavior of CRFs microspheres in water and soil showed that the microspheres had superior stability and different TM sustained-release periods, and TM release of the microspheres in soil was faster than that in water. The release rate is TM/MDK > TM/MSK > TM/MK. In water, the release of thiamethoxam technical was finished after 38 hours. However, for TM/MK, the release rate was 94% after 240 hours, and the release time was extended by 6 times. Meanwhile, TM/MDK has a particular pH-responsive release. Research shows that using microcrystalline wax as the matrix, by adding MSK or MDK to adjust the release of ingredients, pesticide CRFs microspheres with different release periods can be prepared to achieve the purpose of controlling the release of pesticides.","PeriodicalId":15670,"journal":{"name":"Journal of Environmental Science and Health, Part B","volume":"1 1","pages":"576 - 587"},"PeriodicalIF":0.0,"publicationDate":"2022-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90493419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-25DOI: 10.1080/03601234.2022.2079348
A. Kostić, B. Dojčinović, Bojana Špirović Trifunović, D. Milinčić, N. Nedić, S. Stanojević, M. Pešić
Abstract The aim of the current research was to determine the content of (potentially) toxic elements and insecticide residues in monofloral sunflower bee-collected pollen. For micro- and trace elements determination Inductively Coupled Plasma Optical Emission (ICP-OES) analytical method was used while insecticide residue content was monitored by applying Liquid Chromatography-Mass Spectrometry (LC-MS/MS) technique. In total, seventeen micro/trace elements were quantified. None of the twenty four examined insecticides were detected above the limit of detection (LOD) which makes studied sunflower bee-collected pollen eco-friendly both to bees and humans. Based on presence of several toxic as well as potentially toxic elements calculations for estimated weekly intakes (EWI), and oral intakes (OI) were made and used for health risk assessment based on the computation of two different health risk quotients (HQ)- acute (HQA) and long-term (HQL). The obtained results proved that all HQ values for adults were negligible or low except in case of HQL value for arsenic (0.32) which can be characterized as medium. However, in case of children much more precaution is needed due to significant HQL risk for arsenic (1.511). The attained data can help to make additional linkage between bee-collected pollen as food ingredients and potential benefits/risks for human health.
{"title":"Micro/trace/toxic elements and insecticide residues level in monofloral bee-collected sunflower pollen- health risk assessment","authors":"A. Kostić, B. Dojčinović, Bojana Špirović Trifunović, D. Milinčić, N. Nedić, S. Stanojević, M. Pešić","doi":"10.1080/03601234.2022.2079348","DOIUrl":"https://doi.org/10.1080/03601234.2022.2079348","url":null,"abstract":"Abstract The aim of the current research was to determine the content of (potentially) toxic elements and insecticide residues in monofloral sunflower bee-collected pollen. For micro- and trace elements determination Inductively Coupled Plasma Optical Emission (ICP-OES) analytical method was used while insecticide residue content was monitored by applying Liquid Chromatography-Mass Spectrometry (LC-MS/MS) technique. In total, seventeen micro/trace elements were quantified. None of the twenty four examined insecticides were detected above the limit of detection (LOD) which makes studied sunflower bee-collected pollen eco-friendly both to bees and humans. Based on presence of several toxic as well as potentially toxic elements calculations for estimated weekly intakes (EWI), and oral intakes (OI) were made and used for health risk assessment based on the computation of two different health risk quotients (HQ)- acute (HQA) and long-term (HQL). The obtained results proved that all HQ values for adults were negligible or low except in case of HQL value for arsenic (0.32) which can be characterized as medium. However, in case of children much more precaution is needed due to significant HQL risk for arsenic (1.511). The attained data can help to make additional linkage between bee-collected pollen as food ingredients and potential benefits/risks for human health.","PeriodicalId":15670,"journal":{"name":"Journal of Environmental Science and Health, Part B","volume":"1 1","pages":"568 - 575"},"PeriodicalIF":0.0,"publicationDate":"2022-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83081009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-23DOI: 10.1080/03601234.2022.2078627
Acácio Salamandane, M. Malfeito-Ferreira, L. Brito
Abstract This study aims to evaluate the resistance profile and the prevalence of antibiotic resistance genes in 30 isolates of Klebsiella spp. and Aeromonas spp. recovered from water sold in the streets of Maputo. Susceptibility profiles to 15 antibiotics were performed according to Clinical Laboratory Standard Institute guidelines with antibiotic disks on Mueller-Hinton agar plates. Multiplex PCRs were performed targeting 10 ß-lactamase genes, five ESBL (blaTEM-variants, blaOXA-variants, BlaSHV-variants, MCTX-M Group 1 and Group 9 variants) and five AmpC (ACC variants, FOX variants, MOX variants, CIT variants and DHA variants). The results showed a high prevalence of Klebsiella resistance to ß-lactam antibiotics, such as amoxicillin/clavulanic acid (62.5%), amoxicillin (56.3%), ampicillin (50%), cefoxitin (43.8%), and cefotaxime (43.8%). Aeromonas showed resistance to cefoxitin and ampicillin (71.4%), amoxicillin/clavulanic acid (57.1%) and imipenem (42.9%). ESBL blaOXA -variants, blaSVH -variants, MCTX-M Group 1 variants, and MCTX-M Group 9 variants were the most prevalent b-lactam genes, followed by the b-lactams AmpC, ACC variants and FOX variants. It is extremely important to improve waterborne disease control strategies, especially in terms of public awareness of the potential health implications of multidrug-resistant strains of Klebsiella and Aeromonas, which are often neglected.
{"title":"A high level of antibiotic resistance in Klebsiella and Aeromonas isolates from street water sold in Mozambique, associated with the prevalence of extended-spectrum and AmpC ß-lactamases","authors":"Acácio Salamandane, M. Malfeito-Ferreira, L. Brito","doi":"10.1080/03601234.2022.2078627","DOIUrl":"https://doi.org/10.1080/03601234.2022.2078627","url":null,"abstract":"Abstract This study aims to evaluate the resistance profile and the prevalence of antibiotic resistance genes in 30 isolates of Klebsiella spp. and Aeromonas spp. recovered from water sold in the streets of Maputo. Susceptibility profiles to 15 antibiotics were performed according to Clinical Laboratory Standard Institute guidelines with antibiotic disks on Mueller-Hinton agar plates. Multiplex PCRs were performed targeting 10 ß-lactamase genes, five ESBL (blaTEM-variants, blaOXA-variants, BlaSHV-variants, MCTX-M Group 1 and Group 9 variants) and five AmpC (ACC variants, FOX variants, MOX variants, CIT variants and DHA variants). The results showed a high prevalence of Klebsiella resistance to ß-lactam antibiotics, such as amoxicillin/clavulanic acid (62.5%), amoxicillin (56.3%), ampicillin (50%), cefoxitin (43.8%), and cefotaxime (43.8%). Aeromonas showed resistance to cefoxitin and ampicillin (71.4%), amoxicillin/clavulanic acid (57.1%) and imipenem (42.9%). ESBL blaOXA -variants, blaSVH -variants, MCTX-M Group 1 variants, and MCTX-M Group 9 variants were the most prevalent b-lactam genes, followed by the b-lactams AmpC, ACC variants and FOX variants. It is extremely important to improve waterborne disease control strategies, especially in terms of public awareness of the potential health implications of multidrug-resistant strains of Klebsiella and Aeromonas, which are often neglected.","PeriodicalId":15670,"journal":{"name":"Journal of Environmental Science and Health, Part B","volume":"371 1","pages":"561 - 567"},"PeriodicalIF":0.0,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80482800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-18DOI: 10.1080/03601234.2022.2077608
Fernanda Blini Marengo Malheiros, E. Vicente, Angélica Gois Morales, Carlos Alberto-Silva
Abstract Tetraethyl pyrophosphate (TEPP) is an organophosphate pesticide that irreversibly inhibits acetylcholinesterase (AChE). Cork powder or granules have been recommended as a sustainable sorbent to remove pesticides from water. In the present study, we evaluated the effectiveness of removing TEPP from water using wine corks to obtain cork granules as natural adsorbent, analyzing the TEPP effects on AChE activity in commercial enzyme from Electrophorus electricus and secreted by neuronal PC12 cells. TEPP inhibited AChE activity in a concentration-dependent manner. For the first time, we showed that different concentrations of TEPP diluted in water after adsorption experiments using cork granules decreased TEPP's inhibitory effects on AChE activity in commercial enzyme and neuronal PC12 cell culture medium. Our results suggest that the optimum removal of TEPP from water by corks was 91.4 ± 4.0%. Overall, the findings support the hypothesis that cork granules can be used to remediate pesticide-contaminated environments, such as those contaminated by organophosphate pesticides, and demonstrate a new application of a biochemical assay on AChE activity using a commercial enzyme or secreted by neuronal PC12 cells in culture as a possible methodologic strategy for evaluating the success of TEPP removal from water.
{"title":"Efficiency of the removal of tetraethyl pyrophosphate (TEPP) pesticide in water: use of cork granules as a natural adsorbent on acetylcholinesterase activity in neuronal PC12 cell","authors":"Fernanda Blini Marengo Malheiros, E. Vicente, Angélica Gois Morales, Carlos Alberto-Silva","doi":"10.1080/03601234.2022.2077608","DOIUrl":"https://doi.org/10.1080/03601234.2022.2077608","url":null,"abstract":"Abstract Tetraethyl pyrophosphate (TEPP) is an organophosphate pesticide that irreversibly inhibits acetylcholinesterase (AChE). Cork powder or granules have been recommended as a sustainable sorbent to remove pesticides from water. In the present study, we evaluated the effectiveness of removing TEPP from water using wine corks to obtain cork granules as natural adsorbent, analyzing the TEPP effects on AChE activity in commercial enzyme from Electrophorus electricus and secreted by neuronal PC12 cells. TEPP inhibited AChE activity in a concentration-dependent manner. For the first time, we showed that different concentrations of TEPP diluted in water after adsorption experiments using cork granules decreased TEPP's inhibitory effects on AChE activity in commercial enzyme and neuronal PC12 cell culture medium. Our results suggest that the optimum removal of TEPP from water by corks was 91.4 ± 4.0%. Overall, the findings support the hypothesis that cork granules can be used to remediate pesticide-contaminated environments, such as those contaminated by organophosphate pesticides, and demonstrate a new application of a biochemical assay on AChE activity using a commercial enzyme or secreted by neuronal PC12 cells in culture as a possible methodologic strategy for evaluating the success of TEPP removal from water.","PeriodicalId":15670,"journal":{"name":"Journal of Environmental Science and Health, Part B","volume":"148 1","pages":"554 - 560"},"PeriodicalIF":0.0,"publicationDate":"2022-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80994365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Addition of chemical pesticides in biopesticides are expected to be common, due to effect of pest control during plant protection. These hidden chemical pesticides may cause various food safety problems if consumed. The purpose of our study was to develop a method to determine 52 hidden chemical pesticides in three formulation biopesticide products. Optimizations of different parameters, such as the instrument analysis condition for target, the extraction, and the composition of clean-up materials were carried out. The developed method used acetonitrile as an extraction solvent for all biopesticide formulations. The composition of adsorbents was based on QuEChERS, called QuSEL which was a needle filter head, containing PSA, GCB, and MgSO4. Fifty-two chemical pesticides residues were then analyzed by GC-MS/MS and LC-MS/MS. The present results showed good linearity by correlation coefficients of more than 0.99 for all analyses. The LOQ ranged from 5.0 to 20.0 μg kg−1. Recoveries of 32 chemical pesticides ranged from 71.9% to 118.4% at the spiked level of 10, 50, and 100 μg kg−1, and 20 chemical pesticides ranged from 75.3% to 119.8% at the spiked level of 5, 25, and 50 μg kg−1. The developed method was applied for biopesticide products, and 9 samples were positive in 20 samples.
摘要在植物保护过程中，化学农药在生物农药中的添加是普遍存在的，因为它具有防治害虫的作用。这些隐藏的化学农药如果食用可能会引起各种食品安全问题。本研究的目的是建立一种检测三种配方生物农药产品中52种隐性化学农药的方法。对仪器分析条件、萃取工艺、净化物料组成等参数进行了优化。所开发的方法使用乙腈作为提取溶剂，用于所有生物农药配方。吸附剂的组成以QuEChERS为基础，称为QuSEL，是一种针状过滤头，含有PSA、GCB和MgSO4。采用GC-MS/MS和LC-MS/MS对52种化学农药残留进行分析。所有分析的相关系数均在0.99以上，线性良好。定量限为5.0 ~ 20.0 μg kg−1。32种化学农药在加标水平为10、50和100 μg kg - 1时的加标回收率为71.9% ~ 118.4%，20种化学农药在加标水平为5、25和50 μg kg - 1时的加标回收率为75.3% ~ 119.8%。将该方法应用于生物农药产品中，20份样品中有9份呈阳性。
{"title":"Determination of 52 hidden chemical pesticides in biopesticide products by GC-MS/MS and LC-MS/MS","authors":"Nengming Chu, Xiao Shu, Liang Yuan, Xuemei Zhang, M. Tang, Junyin Yang, Dianyan Li, Shuang Wu","doi":"10.1080/03601234.2022.2072645","DOIUrl":"https://doi.org/10.1080/03601234.2022.2072645","url":null,"abstract":"Abstract Addition of chemical pesticides in biopesticides are expected to be common, due to effect of pest control during plant protection. These hidden chemical pesticides may cause various food safety problems if consumed. The purpose of our study was to develop a method to determine 52 hidden chemical pesticides in three formulation biopesticide products. Optimizations of different parameters, such as the instrument analysis condition for target, the extraction, and the composition of clean-up materials were carried out. The developed method used acetonitrile as an extraction solvent for all biopesticide formulations. The composition of adsorbents was based on QuEChERS, called QuSEL which was a needle filter head, containing PSA, GCB, and MgSO4. Fifty-two chemical pesticides residues were then analyzed by GC-MS/MS and LC-MS/MS. The present results showed good linearity by correlation coefficients of more than 0.99 for all analyses. The LOQ ranged from 5.0 to 20.0 μg kg−1. Recoveries of 32 chemical pesticides ranged from 71.9% to 118.4% at the spiked level of 10, 50, and 100 μg kg−1, and 20 chemical pesticides ranged from 75.3% to 119.8% at the spiked level of 5, 25, and 50 μg kg−1. The developed method was applied for biopesticide products, and 9 samples were positive in 20 samples.","PeriodicalId":15670,"journal":{"name":"Journal of Environmental Science and Health, Part B","volume":"38 1","pages":"504 - 515"},"PeriodicalIF":0.0,"publicationDate":"2022-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81206211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-12DOI: 10.1080/03601234.2022.2062984
Wuying Chen, Kailong Li, Ang Chen, Xiangwen Luo, Haoran Xiong, Zengshou Song, Ying Zhang, Y. Liu
Abstract Tebuconazole is an effective but potentially carcinogenic fungicide. Tebuconazole residues in loquat and sugarcane were investigated, together with an analysis of their dietary risk. Solid-phase extraction and high-performance liquid chromatography-tandem mass spectrometry showed fortified recoveries of 87% to 98%, with standard deviations ≤ 6.4%. The tebuconazole residues were below 6.34 mg kg−1 for whole loquat and 0.80 mg kg−1 for sugarcane. Based on the final residue test, the chronic hazard index was 90.74% in whole loquat and sugarcane, while the acute hazard index ranged from 66.32% to 109.49% for loquat and 33.37% to 76.93% for sugarcane. The assessment of potential dietary risk showed that while loquats may represent an acute risk to human health, whereas sugarcane consumption was safe. A 21-day pre-harvest interval is proposed to comply with maximum residue limit regulations and the observed risks when using 430 g/L tebuconazole for treating sugarcane. These findings offer guidance for tebuconazole formulation and use.
摘要:戊康唑是一种有效但有潜在致癌性的杀菌剂。对枇杷和甘蔗中戊康唑残留进行了调查，并对其膳食风险进行了分析。固相萃取和高效液相色谱-串联质谱法的强化回收率为87% ~ 98%，标准偏差≤6.4%。全枇杷的戊康唑残留量低于6.34 mg kg - 1，甘蔗的戊康唑残留量低于0.80 mg kg - 1。最终残留检测结果显示，枇杷和甘蔗的慢性危害指数为90.74%，枇杷和甘蔗的急性危害指数分别为66.32% ~ 109.49%和33.37% ~ 76.93%。对潜在饮食风险的评估表明，虽然枇杷可能对人类健康构成严重风险，但食用甘蔗是安全的。建议采收前间隔21天，以符合最大残留限量规定和观察到的430 g/L戊康唑处理甘蔗的风险。本研究结果对戊康唑的配方和使用具有指导意义。
{"title":"Residue analysis and dietary risk assessment of tebuconazole in loquat and sugarcane after open-field application in China","authors":"Wuying Chen, Kailong Li, Ang Chen, Xiangwen Luo, Haoran Xiong, Zengshou Song, Ying Zhang, Y. Liu","doi":"10.1080/03601234.2022.2062984","DOIUrl":"https://doi.org/10.1080/03601234.2022.2062984","url":null,"abstract":"Abstract Tebuconazole is an effective but potentially carcinogenic fungicide. Tebuconazole residues in loquat and sugarcane were investigated, together with an analysis of their dietary risk. Solid-phase extraction and high-performance liquid chromatography-tandem mass spectrometry showed fortified recoveries of 87% to 98%, with standard deviations ≤ 6.4%. The tebuconazole residues were below 6.34 mg kg−1 for whole loquat and 0.80 mg kg−1 for sugarcane. Based on the final residue test, the chronic hazard index was 90.74% in whole loquat and sugarcane, while the acute hazard index ranged from 66.32% to 109.49% for loquat and 33.37% to 76.93% for sugarcane. The assessment of potential dietary risk showed that while loquats may represent an acute risk to human health, whereas sugarcane consumption was safe. A 21-day pre-harvest interval is proposed to comply with maximum residue limit regulations and the observed risks when using 430 g/L tebuconazole for treating sugarcane. These findings offer guidance for tebuconazole formulation and use.","PeriodicalId":15670,"journal":{"name":"Journal of Environmental Science and Health, Part B","volume":"23 1","pages":"497 - 503"},"PeriodicalIF":0.0,"publicationDate":"2022-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81373858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-09DOI: 10.1080/03601234.2022.2073151
B. Salisu, S. Anua, W. I. Wan Rosli, N. Mazlan, R. Haron
Abstract This study reports the development and validation of a simple, yet efficient method called the ultra-fast reverse phase high-performance liquid chromatography with fluorescence and photodiode array detector (UF-RP-HPLC-FD-DAD) to extract and quantify the total aflatoxin from grains and poultry feed. The proposed method is used to determine the total aflatoxin content in 150 samples of maize, rice, wheat, peanut and poultry feed obtained from open markets in a state in Nigeria. The extent of consumer exposure to aflatoxins and the risk of developing hepatocellular carcinoma (HCC) are evaluated. The UF-RP-HPLC-FD-DAD method was found to be satisfactorily accurate, sensitive and reliable as ascertained by its excellent validation outcomes (R 2 > 0.999, LoD < 0.08 ng g−1, LoQ < 0.2 ng g−1, recovery = 90–102%). The aflatoxin levels in food grains and poultry feed samples obtained in this study implied a moderate dietary exposure of between 10.67 and 20.77 ng/kg BW/day, in which the risk of developing HCC was estimated to be between 6.27 and 21.40% per 100,000 adults/year. Hence, greater monitoring of marketed food and feed is required, besides the deployment of strict controls and preventive techniques to minimize the population’s exposure to a high dietary level of aflatoxins.
摘要:本研究建立了一种简单、高效的荧光和光电二极管阵列检测器超快速反相高效液相色谱法(UF-RP-HPLC-FD-DAD)，用于从谷物和家禽饲料中提取和定量总黄曲霉毒素。所提出的方法用于确定从尼日利亚一个州的公开市场获得的150份玉米、大米、小麦、花生和家禽饲料样品中的黄曲霉毒素总含量。消费者接触黄曲霉毒素的程度和发展为肝细胞癌(HCC)的风险进行了评估。结果表明，该方法准确、灵敏、可靠(r2 > 0.999, LoD < 0.08 ng g−1,LoQ < 0.2 ng g−1，加样回收率= 90 ~ 102%)。本研究中获得的食品谷物和家禽饲料样本中的黄曲霉毒素水平表明，适度的饮食暴露量在10.67至20.77 ng/kg BW/天之间，其中发生HCC的风险估计在6.27至21.40% / 100000成年人/年之间。因此，除了采用严格的控制和预防技术以尽量减少人们从饮食中摄取大量黄曲霉毒素外，还需要加强对已上市食品和饲料的监测。
{"title":"Ultra-fast RP-HPLC-FD-DAD for quantification of total aflatoxins in maize, rice, wheat, peanut and poultry feed without sample clean up, and population exposure risk assessment in Katsina, Nigeria: an optimization study","authors":"B. Salisu, S. Anua, W. I. Wan Rosli, N. Mazlan, R. Haron","doi":"10.1080/03601234.2022.2073151","DOIUrl":"https://doi.org/10.1080/03601234.2022.2073151","url":null,"abstract":"Abstract This study reports the development and validation of a simple, yet efficient method called the ultra-fast reverse phase high-performance liquid chromatography with fluorescence and photodiode array detector (UF-RP-HPLC-FD-DAD) to extract and quantify the total aflatoxin from grains and poultry feed. The proposed method is used to determine the total aflatoxin content in 150 samples of maize, rice, wheat, peanut and poultry feed obtained from open markets in a state in Nigeria. The extent of consumer exposure to aflatoxins and the risk of developing hepatocellular carcinoma (HCC) are evaluated. The UF-RP-HPLC-FD-DAD method was found to be satisfactorily accurate, sensitive and reliable as ascertained by its excellent validation outcomes (R 2 > 0.999, LoD < 0.08 ng g−1, LoQ < 0.2 ng g−1, recovery = 90–102%). The aflatoxin levels in food grains and poultry feed samples obtained in this study implied a moderate dietary exposure of between 10.67 and 20.77 ng/kg BW/day, in which the risk of developing HCC was estimated to be between 6.27 and 21.40% per 100,000 adults/year. Hence, greater monitoring of marketed food and feed is required, besides the deployment of strict controls and preventive techniques to minimize the population’s exposure to a high dietary level of aflatoxins.","PeriodicalId":15670,"journal":{"name":"Journal of Environmental Science and Health, Part B","volume":"1 1","pages":"541 - 553"},"PeriodicalIF":0.0,"publicationDate":"2022-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79586361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-04DOI: 10.1080/03601234.2022.2071561
Zixuan Chen, Zhengchao Zhang, Peng Wang, Tingyi Liu
Abstract Cadmium (Cd) contamination in soils is of great concern, and therefore the development of effective remediation technologies for cadmium contamination is urgent. In our study, nano zero-valent iron (NZVI) supported by metal-organic framework (MOF) materials (MOF-NZVI) were prepared using NaBH4 and FeCl3 to try to solve the soil Cd remediation problem. Herein, the effects and the mechanism of MOF-NZVI for the immobilization of Cd in contaminated soil was investigated. The results showed that MOF-NZVI was capable of converting Cd in soil from weak acid extractable and reducible fractions to oxidizable and residual states, thus effectively reducing the toxicity of Cd in soil. FTIR and XRD analysis confirmed that the dominant reaction mechanism between MOF-NVZI and Cd is adsorption with complexation, and the stabilization of Cd is achieved by the formation of compounds such as FeOCdOH.
{"title":"Pivotal roles of nanoscale zerovalent iron supported on metal-organic framework material in cadmium (II) migration and transformation in soil","authors":"Zixuan Chen, Zhengchao Zhang, Peng Wang, Tingyi Liu","doi":"10.1080/03601234.2022.2071561","DOIUrl":"https://doi.org/10.1080/03601234.2022.2071561","url":null,"abstract":"Abstract Cadmium (Cd) contamination in soils is of great concern, and therefore the development of effective remediation technologies for cadmium contamination is urgent. In our study, nano zero-valent iron (NZVI) supported by metal-organic framework (MOF) materials (MOF-NZVI) were prepared using NaBH4 and FeCl3 to try to solve the soil Cd remediation problem. Herein, the effects and the mechanism of MOF-NZVI for the immobilization of Cd in contaminated soil was investigated. The results showed that MOF-NZVI was capable of converting Cd in soil from weak acid extractable and reducible fractions to oxidizable and residual states, thus effectively reducing the toxicity of Cd in soil. FTIR and XRD analysis confirmed that the dominant reaction mechanism between MOF-NVZI and Cd is adsorption with complexation, and the stabilization of Cd is achieved by the formation of compounds such as FeOCdOH.","PeriodicalId":15670,"journal":{"name":"Journal of Environmental Science and Health, Part B","volume":"79 1","pages":"430 - 440"},"PeriodicalIF":0.0,"publicationDate":"2022-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84087647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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