Pub Date : 2024-12-01DOI: 10.1016/j.chemosphere.2024.143816
Guangli Yu , Fei Ni , Wenyue Niu , Yu Chen , Feng Zhang , Guo-Dong Li , Xingfei Song , Yajing Zhang , Kangjun Wang
Metal-organic frameworks (MOFs) recently gained immense popularity for the adsorption of organic impurities. In this work, the adsorptive separation of bisphenol A (BPA) from aqueous mixtures was explored utilizing three types of zirconium-based MOFs, namely MOF-808, UiO-66, and hierarchically porous UiO-66 (HP-UiO-66). The HP-UiO-66, which was etched by sodium acetate as the terminal ligand, generated large mesopores ranging from 40 to 300 Å due to the departure of partial linkers and metallic clusters. The adsorption ability for BPA increased significantly with the introduction of numerous mesopores onto the HP-UiO-66 framework, even though the surface area of HP-UiO-66 was lower compared to that of the pristine UiO-66 and MOF-808. The study revealed that the maximum adsorption capacities (q) for BPA by HP-UiO-66 reached up to 295.04 mg g−1, which was about 88.5% and 17.4% higher in comparison to UiO-66 and MOF-808, respectively. Furthermore, the q value of HP-UiO-66 was also better than many other previously reported MOF adsorbents. The analysis of possible adsorption mechanisms indicated that physical pore-filling was anticipated as the principal mechanism, attributed to the larger window size and high mesopore surface area of HP-UiO-66. Furthermore, X-ray photoelectron and Fourier transform infrared spectroscopic measurements inferred that the synergetic effects of H-bonding and π-π interactions played crucial roles in BPA capture as well. Overall, this study revealed a structure–property relationship in the Zr-MOFs-based adsorbents and opened up a new avenue to exploit unique MOF platforms for the efficient removal of emerging contaminations in the future.
{"title":"Precise manipulation of pore sizes in Zr(IV)-Based metal-organic frameworks for enhanced bisphenol a removal from water","authors":"Guangli Yu , Fei Ni , Wenyue Niu , Yu Chen , Feng Zhang , Guo-Dong Li , Xingfei Song , Yajing Zhang , Kangjun Wang","doi":"10.1016/j.chemosphere.2024.143816","DOIUrl":"10.1016/j.chemosphere.2024.143816","url":null,"abstract":"<div><div>Metal-organic frameworks (MOFs) recently gained immense popularity for the adsorption of organic impurities. In this work, the adsorptive separation of bisphenol A (BPA) from aqueous mixtures was explored utilizing three types of zirconium-based MOFs, namely MOF-808, UiO-66, and hierarchically porous UiO-66 (HP-UiO-66). The HP-UiO-66, which was etched by sodium acetate as the terminal ligand, generated large mesopores ranging from 40 to 300 Å due to the departure of partial linkers and metallic clusters. The adsorption ability for BPA increased significantly with the introduction of numerous mesopores onto the HP-UiO-66 framework, even though the surface area of HP-UiO-66 was lower compared to that of the pristine UiO-66 and MOF-808. The study revealed that the maximum adsorption capacities (<em>q</em>) for BPA by HP-UiO-66 reached up to 295.04 mg g<sup>−1</sup>, which was about 88.5% and 17.4% higher in comparison to UiO-66 and MOF-808, respectively. Furthermore, the <em>q</em> value of HP-UiO-66 was also better than many other previously reported MOF adsorbents. The analysis of possible adsorption mechanisms indicated that physical pore-filling was anticipated as the principal mechanism, attributed to the larger window size and high mesopore surface area of HP-UiO-66. Furthermore, X-ray photoelectron and Fourier transform infrared spectroscopic measurements inferred that the synergetic effects of H-bonding and π-π interactions played crucial roles in BPA capture as well. Overall, this study revealed a structure–property relationship in the Zr-MOFs-based adsorbents and opened up a new avenue to exploit unique MOF platforms for the efficient removal of emerging contaminations in the future.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"369 ","pages":"Article 143816"},"PeriodicalIF":8.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142741564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Biodegradable plastics (BPs) are regarded as ecomaterials and are emerging as a substitute for traditional non-degradable plastics. However, the information on the interaction between biodegradable microplastics (BMPs) and cadmium (Cd) in agricultural soil is still limited. Here, lettuce plants were cultured in BMPs (polylactic acid (PLA) MPs and poly(butylene-adipate-co-terephthalate) (PBAT) MPs) and Cd co-polluted soil for 35 days. The results show that diffusive gradient in thin films technique (DGT) but not diethylenetriaminepentaacetic acid (DTPA) extraction method greatly improved the prediction reliability of Cd bioavailability in non-rhizosphere soil treated with BMPs (R2 = 0.902). BMPs increased the Cd bioavailability in non-rhizosphere soil indirectly by decreasing soil pH, cation exchange capacity (CEC), and dissolved organic carbon (DOC), rather than by directly adsorbing Cd on their surface. PLA MPs incubated in rhizosphere soil showed more considerable degradation with extremely obvious cavities and the fracture of ester functional groups on their surface than PBAT MPs. BMPs could provide ecological niches to colonize and induce microorganisms associated with BMPs’ degradation to occupy a more dominant position. In addition, Cd only affected the composition and function of microbial communities in soil but not on BMPs. However, co-exposure to BMPs and Cd significantly reduced the degrees of co-occurrence network of fungal communities on PLA MPs and PBAT MPs by 37.7% and 26.7%, respectively, compared to single exposure to BMPs.
{"title":"Effect of biodegradable microplastics and Cd co-pollution on Cd bioavailability and plastisphere in soil-plant system","authors":"Xuechun Shao , Weiyu Liang , Kailin Gong , Zhihua Qiao , Wei Zhang , Genxiang Shen , Cheng Peng","doi":"10.1016/j.chemosphere.2024.143822","DOIUrl":"10.1016/j.chemosphere.2024.143822","url":null,"abstract":"<div><div>Biodegradable plastics (BPs) are regarded as ecomaterials and are emerging as a substitute for traditional non-degradable plastics. However, the information on the interaction between biodegradable microplastics (BMPs) and cadmium (Cd) in agricultural soil is still limited. Here, lettuce plants were cultured in BMPs (polylactic acid (PLA) MPs and poly(butylene-adipate-co-terephthalate) (PBAT) MPs) and Cd co-polluted soil for 35 days. The results show that diffusive gradient in thin films technique (DGT) but not diethylenetriaminepentaacetic acid (DTPA) extraction method greatly improved the prediction reliability of Cd bioavailability in non-rhizosphere soil treated with BMPs (R<sup>2</sup> = 0.902). BMPs increased the Cd bioavailability in non-rhizosphere soil indirectly by decreasing soil pH, cation exchange capacity (CEC), and dissolved organic carbon (DOC), rather than by directly adsorbing Cd on their surface. PLA MPs incubated in rhizosphere soil showed more considerable degradation with extremely obvious cavities and the fracture of ester functional groups on their surface than PBAT MPs. BMPs could provide ecological niches to colonize and induce microorganisms associated with BMPs’ degradation to occupy a more dominant position. In addition, Cd only affected the composition and function of microbial communities in soil but not on BMPs. However, co-exposure to BMPs and Cd significantly reduced the degrees of co-occurrence network of fungal communities on PLA MPs and PBAT MPs by 37.7% and 26.7%, respectively, compared to single exposure to BMPs.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"369 ","pages":"Article 143822"},"PeriodicalIF":8.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-01DOI: 10.1016/j.chemosphere.2024.143810
Celia Trujillo , Aubin Thibault de Chanvalon , Francisco Laborda , Ryszard Lobinski , Javier Jimenez-Lamana
This study investigates whether nanoplastics are significant contributor of rare earth elements (Gd) transportation under environmental conditions. Important effects of nanoplastic concentration, Gd concentration, complexation with organic ligands, pH, ionic strength and occurrence of natural colloids competitor were studied thanks to an experimental design combining incubation follow by ultrafiltration and ICPMS analyses. In particular, we observed that even in sea water, about half of the gadolinium can be adsorbed on nanoplastics. Surprisingly, the adsorption is more pronounced at low concentration of nanoplastic (10 μg L−1) probably because it prevents homoaggregation of nanoparticles. These are the first experimental clues that adsorption on nanoplastics is governed by fundamentally different processes than adsorption on microplastics.
{"title":"Nanoplastics as competitors of natural colloids in the environment: The case of gadolinium complexes","authors":"Celia Trujillo , Aubin Thibault de Chanvalon , Francisco Laborda , Ryszard Lobinski , Javier Jimenez-Lamana","doi":"10.1016/j.chemosphere.2024.143810","DOIUrl":"10.1016/j.chemosphere.2024.143810","url":null,"abstract":"<div><div>This study investigates whether nanoplastics are significant contributor of rare earth elements (Gd) transportation under environmental conditions. Important effects of nanoplastic concentration, Gd concentration, complexation with organic ligands, pH, ionic strength and occurrence of natural colloids competitor were studied thanks to an experimental design combining incubation follow by ultrafiltration and ICPMS analyses. In particular, we observed that even in sea water, about half of the gadolinium can be adsorbed on nanoplastics. Surprisingly, the adsorption is more pronounced at low concentration of nanoplastic (10 μg L<sup>−1</sup>) probably because it prevents homoaggregation of nanoparticles. These are the first experimental clues that adsorption on nanoplastics is governed by fundamentally different processes than adsorption on microplastics.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"369 ","pages":"Article 143810"},"PeriodicalIF":8.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142741624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-01DOI: 10.1016/j.chemosphere.2024.143836
Xinxin Qin , Xinyue Liu , Yi He , Yichun Zhu , Zuwen Liu , Wentao Li , Mengkai Li , Zhimin Qiang , Junfeng Lian
Eight sulfonamide (SA) antibiotics were effectively degraded using a UV/H2O2 process in a quasi-collimated beam apparatus, utilizing optimized fluence quantification. Fluence-based rate constants (kk'SA) for the UV/H2O2 process were established. A curve-fitting method, derived from ROH,UV modeling, was developed for the UV/H2O2 process to quantitatively assess the impact of critical factors, including water quality and direct UV photolysis. It was observed that k'SA values approached a limiting value as initial H2O2 concentration increased. The specific second-order rate constants for •OH reactions with neutral and anionic SA species were determined to be within (2.2–5.7) × 10⁹ M⁻1 s⁻1, showing minimal variation among species. For the eight SAs studied, k'SA values were calculated from 3.9 × 10⁻⁴ to 6.0 × 10⁻2 cm2 mJ⁻1 across a typical pH range of 6.5–9.5. Direct UV photolysis was notably significant in SA degradation, particularly for sulfisoxazole, contributing at least 35%. An energy cost equation was formulated to evaluate the cost-effectiveness of SA degradation by UV/H2O2 and optimize operational parameters. This model, validated in real water scenarios, shows promise for predicting SA removal in UV/H2O2 processes. The developed curve-fitting method, pH-independent and accounting for both direct photolysis and OH radical reactions, is apt for modeling mixed-contaminant degradation in UV/H2O2 processes, simplifying calculations in ROH,UV modeling.
{"title":"Kinetic modeling of sulfonamide degradation by UV/H2O2: Deduction of ROH,UV modeling and application","authors":"Xinxin Qin , Xinyue Liu , Yi He , Yichun Zhu , Zuwen Liu , Wentao Li , Mengkai Li , Zhimin Qiang , Junfeng Lian","doi":"10.1016/j.chemosphere.2024.143836","DOIUrl":"10.1016/j.chemosphere.2024.143836","url":null,"abstract":"<div><div>Eight sulfonamide (SA) antibiotics were effectively degraded using a UV/H<sub>2</sub>O<sub>2</sub> process in a quasi-collimated beam apparatus, utilizing optimized fluence quantification. Fluence-based rate constants (<em>k</em><em>k</em>'<sub>SA</sub>) for the UV/H<sub>2</sub>O<sub>2</sub> process were established. A curve-fitting method, derived from <em>R</em><sub>OH,UV</sub> modeling, was developed for the UV/H<sub>2</sub>O<sub>2</sub> process to quantitatively assess the impact of critical factors, including water quality and direct UV photolysis. It was observed that <em>k</em>'<sub>SA</sub> values approached a limiting value as initial H<sub>2</sub>O<sub>2</sub> concentration increased. The specific second-order rate constants for <sup>•</sup>OH reactions with neutral and anionic SA species were determined to be within (2.2–5.7) × 10⁹ M⁻<sup>1</sup> s⁻<sup>1</sup>, showing minimal variation among species. For the eight SAs studied, <em>k</em>'<sub>SA</sub> values were calculated from 3.9 × 10⁻⁴ to 6.0 × 10⁻<sup>2</sup> cm<sup>2</sup> mJ⁻<sup>1</sup> across a typical pH range of 6.5–9.5. Direct UV photolysis was notably significant in SA degradation, particularly for sulfisoxazole, contributing at least 35%. An energy cost equation was formulated to evaluate the cost-effectiveness of SA degradation by UV/H<sub>2</sub>O<sub>2</sub> and optimize operational parameters. This model, validated in real water scenarios, shows promise for predicting SA removal in UV/H<sub>2</sub>O<sub>2</sub> processes. The developed curve-fitting method, pH-independent and accounting for both direct photolysis and OH radical reactions, is apt for modeling mixed-contaminant degradation in UV/H<sub>2</sub>O<sub>2</sub> processes, simplifying calculations in <em>R</em><sub>OH,UV</sub> modeling.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"369 ","pages":"Article 143836"},"PeriodicalIF":8.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-01DOI: 10.1016/j.chemosphere.2024.143678
Toheeb Lekan Jolaosho
This study examines potentially toxic elements (PTEs) in leachates from three landfills (active and closed sites) to quantify and compare their degree of toxicity and percolation effects on aquifer groundwater based on distance zonation. The finding revealed that the active landfill leachates had higher concentrations (P < 0.05) of PTEs, with EC, TDS, Cd, Cu, Fe, Zn, Pb, and Mn being above the standard limits for wastewater. The leachate pollution index confirmed high toxicity of the active sites. The geospatial maps suggest that the aquifer was influenced by leachate migration effects, with the groundwater situated within 100 m of the landfills exceeding the regulatory limits. Based on the Ficklin-Caboi assessment, the groundwaters were categorized into “low metals—near neutral” and “high metals—near neutral." The contamination degree, heavy metal contamination index, groundwater quality index, and water pollution index denote that over 40% of the groundwaters are “highly to extremely” polluted and are unfit for drinking, while over 50% are “excellently pure." The geospatial maps revealed that all the groundwaters within 100 m of the landfills are polluted, especially those near the active landfills. The prevailing factors impairing the quality of groundwater were Pb > Cd > TDS > Fe > EC > Cr > pH > Mn > Se > Co. The correlation coefficients, principal components, and cluster analyses confirmed the heterogeneous nature of the landfills and that the solid wastes were mainly from industrial, commercial, and household sources. Aside from the migration effect of leachates, other anthropogenic and geological factors are influencing the aquifer systems. The health risk assessment showed that the groundwaters within 100–500 m of the landfills are capable of causing noncarcinogenic and cancer health risks in exposed populations, with children and those within the distance of 100 m being the most vulnerable groups.
{"title":"Characterization of potentially toxic elements in leachates from active and closed landfills in Nigeria and their effects on groundwater systems using spatial, indexical, chemometric and health risk techniques","authors":"Toheeb Lekan Jolaosho","doi":"10.1016/j.chemosphere.2024.143678","DOIUrl":"10.1016/j.chemosphere.2024.143678","url":null,"abstract":"<div><div>This study examines potentially toxic elements (PTEs) in leachates from three landfills (active and closed sites) to quantify and compare their degree of toxicity and percolation effects on aquifer groundwater based on distance zonation. The finding revealed that the active landfill leachates had higher concentrations (P < 0.05) of PTEs, with EC, TDS, Cd, Cu, Fe, Zn, Pb, and Mn being above the standard limits for wastewater. The leachate pollution index confirmed high toxicity of the active sites. The geospatial maps suggest that the aquifer was influenced by leachate migration effects, with the groundwater situated within 100 m of the landfills exceeding the regulatory limits. Based on the Ficklin-Caboi assessment, the groundwaters were categorized into “low metals—near neutral” and “high metals—near neutral.\" The contamination degree, heavy metal contamination index, groundwater quality index, and water pollution index denote that over 40% of the groundwaters are “highly to extremely” polluted and are unfit for drinking, while over 50% are “excellently pure.\" The geospatial maps revealed that all the groundwaters within 100 m of the landfills are polluted, especially those near the active landfills. The prevailing factors impairing the quality of groundwater were Pb > Cd > TDS > Fe > EC > Cr > pH > Mn > Se > Co. The correlation coefficients, principal components, and cluster analyses confirmed the heterogeneous nature of the landfills and that the solid wastes were mainly from industrial, commercial, and household sources. Aside from the migration effect of leachates, other anthropogenic and geological factors are influencing the aquifer systems. The health risk assessment showed that the groundwaters within 100–500 m of the landfills are capable of causing noncarcinogenic and cancer health risks in exposed populations, with children and those within the distance of 100 m being the most vulnerable groups.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"369 ","pages":"Article 143678"},"PeriodicalIF":8.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142633966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-01DOI: 10.1016/j.chemosphere.2024.143814
Sori Mok , Sunggyu Lee , Nahyun Lee , Sungkyoon Kim , Kyungho Choi , Jeongim Park , Younglim Kho , Hyo-Bang Moon
According to global regulations on hazardous chemicals, numerous alternatives have been manufactured and used in various consumer products. Suspect and non-target analyses are advanced analytical techniques used for identifying novel contaminants. In the present study, suspect and non-target analytical approaches using a gas chromatography coupled to a time-of-flight mass spectrometer were applied to identify novel contaminants in 40 pooled serum samples from a sub-population (n = 400) of the 2015–2017 national biomonitoring program. Suspect screening analysis was performed using an in-house library based on retention times and quantifier and qualifier ions for 222 contaminants, including persistent organic pollutants and emerging contaminants. Non-target analysis was performed by matching deconvoluted mass spectra to the spectral library from the National Institute of Standards and Technology. The suspect screening analysis identified organochlorinated pesticides, organophosphate esters, phthalate esters, and alternative plasticizers. Among the 68 compounds identified in the non-target analysis, siloxanes, novel organophosphate esters, and UV ink photoinitiators were considered candidates for future inclusion in the biomonitoring program based upon significant human exposure. Our findings demonstrate the feasibility of suspect and non-target analysis to identify novel contaminants to prioritize for inclusion within a national human biomonitoring program.
{"title":"Nationwide human biomonitoring strategy in Korea: Prioritization of novel contaminants using GC/TOF-MS with suspect and non-target screening","authors":"Sori Mok , Sunggyu Lee , Nahyun Lee , Sungkyoon Kim , Kyungho Choi , Jeongim Park , Younglim Kho , Hyo-Bang Moon","doi":"10.1016/j.chemosphere.2024.143814","DOIUrl":"10.1016/j.chemosphere.2024.143814","url":null,"abstract":"<div><div>According to global regulations on hazardous chemicals, numerous alternatives have been manufactured and used in various consumer products. Suspect and non-target analyses are advanced analytical techniques used for identifying novel contaminants. In the present study, suspect and non-target analytical approaches using a gas chromatography coupled to a time-of-flight mass spectrometer were applied to identify novel contaminants in 40 pooled serum samples from a sub-population (<em>n</em> = 400) of the 2015–2017 national biomonitoring program. Suspect screening analysis was performed using an in-house library based on retention times and quantifier and qualifier ions for 222 contaminants, including persistent organic pollutants and emerging contaminants. Non-target analysis was performed by matching deconvoluted mass spectra to the spectral library from the National Institute of Standards and Technology. The suspect screening analysis identified organochlorinated pesticides, organophosphate esters, phthalate esters, and alternative plasticizers. Among the 68 compounds identified in the non-target analysis, siloxanes, novel organophosphate esters, and UV ink photoinitiators were considered candidates for future inclusion in the biomonitoring program based upon significant human exposure. Our findings demonstrate the feasibility of suspect and non-target analysis to identify novel contaminants to prioritize for inclusion within a national human biomonitoring program.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"369 ","pages":"Article 143814"},"PeriodicalIF":8.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-01DOI: 10.1016/j.chemosphere.2024.143829
Jun Tae Kim , Kiramage Chathuranga , Jong Soo Lee , Min Hee Kim , Won Ho Park
In recent years, active packaging technology for extending food shelf life and intelligent packaging technology for monitoring food freshness have become essential for ensuring food safety. Among sensing technologies, pH-sensitive sensors have notable advantages, including simplicity, compactness, and affordability, making them ideal for monitoring food freshness. This study proposes an intelligent food indicator based on a composite nanofiber membrane fabricated by electrospinning. The membrane, composed of poly(vinyl alcohol) (PVA), tannic acid (TA), and the natural pH-sensitive dye curcumin (CUR), was heat-treated to enhance its moisture stability for food packaging. Furthermore, the incorporation of TA and CUR into PVA provides additional benefits such as UV-blocking, antioxidant, and antimicrobial properties, effectively delaying food spoilage. The CUR-incorporated nanofibrous membrane exhibited faster detection of shrimp spoilage via colorimetric changes under increasingly alkaline conditions than film samples. Moreover, compared to film-based samples, the composite nanofiber membrane exhibited faster color change responsiveness owing to its porous and high surface area structure, thus serving as an efficient and intelligent indicator.
{"title":"Poly(vinyl alcohol)/tannic acid nanofibrous membrane containing curcumin as an intelligent indicator of food spoilage","authors":"Jun Tae Kim , Kiramage Chathuranga , Jong Soo Lee , Min Hee Kim , Won Ho Park","doi":"10.1016/j.chemosphere.2024.143829","DOIUrl":"10.1016/j.chemosphere.2024.143829","url":null,"abstract":"<div><div>In recent years, active packaging technology for extending food shelf life and intelligent packaging technology for monitoring food freshness have become essential for ensuring food safety. Among sensing technologies, pH-sensitive sensors have notable advantages, including simplicity, compactness, and affordability, making them ideal for monitoring food freshness. This study proposes an intelligent food indicator based on a composite nanofiber membrane fabricated by electrospinning. The membrane, composed of poly(vinyl alcohol) (PVA), tannic acid (TA), and the natural pH-sensitive dye curcumin (CUR), was heat-treated to enhance its moisture stability for food packaging. Furthermore, the incorporation of TA and CUR into PVA provides additional benefits such as UV-blocking, antioxidant, and antimicrobial properties, effectively delaying food spoilage. The CUR-incorporated nanofibrous membrane exhibited faster detection of shrimp spoilage via colorimetric changes under increasingly alkaline conditions than film samples. Moreover, compared to film-based samples, the composite nanofiber membrane exhibited faster color change responsiveness owing to its porous and high surface area structure, thus serving as an efficient and intelligent indicator.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"369 ","pages":"Article 143829"},"PeriodicalIF":8.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-01DOI: 10.1016/j.chemosphere.2024.143855
Renle Xu , Yuhang Lou , Yanqing Gao , Shibin Shang , Zhanqian Song , Kerang Huang , Luqi Li , Lei Chen , Jian Li
To mitigate the impact of traditional chemical pesticides on environment, and achieve sustainable crop protection, 24 eco-friendly rosin-based sulfonamide derivatives were synthesized and developed. The in vitro activity assessment showed that compound 4X (Co. 4X) exhibited excellent fungicidal activity against V. mali (EC50 = 1.106 μg/mL), marginally surpassing the positive control carbendazim (EC50 = 1.353 μg/mL). In vivo investigations suggested that Co. 4X exhibited moderate efficacy in mitigating V. mali infection in both apple trees and apples. Physiological assessments revealed that Co. 4X induced severe ultrastructural damage to the mycelium, heightened cell membrane permeability, and inhibited SDH protein activity. Subsequent biosafety evaluations affirmed the environment-friendly of Co. 4X on Zebrafish (LC50(96h) = 25.176 μg/mL). Toxicological research revealed that Co. 4X caused damage to the cells of Zebrafish gills, liver, and intestines, resulting in impaired respiratory, detoxification, digestion, and absorption functions of Zebrafish. In summary, the findings of this study contribute to a deeper understanding of the toxicity mechanisms of novel pesticides, decreasing environmental risks caused by traditional chemical pesticides, and improving the effective management of novel pesticide applications.
{"title":"Integrating morphology, physiology, and computer simulation to reveal the toxicity mechanism of eco-friendly rosin-based pesticides","authors":"Renle Xu , Yuhang Lou , Yanqing Gao , Shibin Shang , Zhanqian Song , Kerang Huang , Luqi Li , Lei Chen , Jian Li","doi":"10.1016/j.chemosphere.2024.143855","DOIUrl":"10.1016/j.chemosphere.2024.143855","url":null,"abstract":"<div><div>To mitigate the impact of traditional chemical pesticides on environment, and achieve sustainable crop protection, 24 eco-friendly rosin-based sulfonamide derivatives were synthesized and developed. The <em>in vitro</em> activity assessment showed that compound 4X (Co. 4X) exhibited excellent fungicidal activity against <em>V. mali</em> (EC<sub>50</sub> = 1.106 μg/mL), marginally surpassing the positive control carbendazim (EC<sub>50</sub> = 1.353 μg/mL). <em>In vivo</em> investigations suggested that Co. 4X exhibited moderate efficacy in mitigating <em>V. mali</em> infection in both apple trees and apples. Physiological assessments revealed that Co. 4X induced severe ultrastructural damage to the mycelium, heightened cell membrane permeability, and inhibited SDH protein activity. Subsequent biosafety evaluations affirmed the environment-friendly of Co. 4X on Zebrafish (LC<sub>50(96h)</sub> = 25.176 μg/mL). Toxicological research revealed that Co. 4X caused damage to the cells of Zebrafish gills, liver, and intestines, resulting in impaired respiratory, detoxification, digestion, and absorption functions of Zebrafish. In summary, the findings of this study contribute to a deeper understanding of the toxicity mechanisms of novel pesticides, decreasing environmental risks caused by traditional chemical pesticides, and improving the effective management of novel pesticide applications.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"369 ","pages":"Article 143855"},"PeriodicalIF":8.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-27DOI: 10.1016/j.chemosphere.2024.143770
Axel G. Andersson , Anna Lundgren , Yiyi Xu , Christel Nielsen , Christian H. Lindh , Daniela Pineda , Josefine Vallin , Clara Johnsson , Tony Fletcher , Mats Bemark , Kristina Jakobsson , Ying Li
Background
Perfluoroalkyl substances (PFAS) have been associated with impaired antibody levels after childhood vaccinations and immunosuppressive effects in animals. However, the in vivo effects of PFAS on antigen specific human T cell responses have not been investigated in adults. In Ronneby, Sweden, the drinking water of one of the water works was previously highly contaminated with primarily perfluorohexane sulfonic acid (PFHxS) and perfluorooctane sulfonic acid (PFOS). The COVID-19 vaccination scheme presented the possibility to assess antigen specific T cell function after vaccination in adults with high PFAS serum levels.
Objectives
To investigate the relationship between PFAS exposure and T cell responses after COVID-19 vaccination in a population with varied PFAS exposure.
Methods
116 COVID-19 naïve individuals from Ronneby and a background exposed group were included from the PFAS Immune Response After COVID-19 Vaccination cohort (PIRVACoV). All participants received two doses of Spikevax® (Moderna) vaccine. Blood T cells were stimulated with overlapping peptides based on the SARS-CoV-2 spike protein and their production of the cytokines IFN-γ, IL-2, and TNF were measured. The general immune response was assessed by measurement of phytohemagglutinin stimulated cytokines and total immunoglobulin serum levels. Adjusted mixed linear regressions were fitted against measured, address-based and prenatal PFAS exposure indices.
Results
PFAS median serum levels differed greatly between participants ever having had contaminated drinking water at home (PFOS 47 ng/mL, 5th to 95th percentile 6–221 ng/mL) and the background group (PFOS 4 ng/mL, 2–9 ng/mL). PFAS exposure was not associated with SARS-CoV-2 specific T cell cytokine responses (e.g., measured PFOS to IFN-γ: +3% per interquartile range PFOS, 95% confidence interval: 10, 17), nor general immune response.
Conclusions
This study indicates, in concordance with the PIRVACoV antibody study and other antibody PFAS/COVID-19 studies, that PFAS exposed, healthy adults mount adequate immune responses to mRNA COVID-19 vaccination. EudraCT-number: 2021-000842-16.
{"title":"The T cell response to SARS-CoV-2 mRNA vaccine in adults with high exposure to perfluoroalkyl substances from Ronneby, Sweden","authors":"Axel G. Andersson , Anna Lundgren , Yiyi Xu , Christel Nielsen , Christian H. Lindh , Daniela Pineda , Josefine Vallin , Clara Johnsson , Tony Fletcher , Mats Bemark , Kristina Jakobsson , Ying Li","doi":"10.1016/j.chemosphere.2024.143770","DOIUrl":"10.1016/j.chemosphere.2024.143770","url":null,"abstract":"<div><h3>Background</h3><div>Perfluoroalkyl substances (PFAS) have been associated with impaired antibody levels after childhood vaccinations and immunosuppressive effects in animals. However, the <em>in vivo</em> effects of PFAS on antigen specific human T cell responses have not been investigated in adults. In Ronneby, Sweden, the drinking water of one of the water works was previously highly contaminated with primarily perfluorohexane sulfonic acid (PFHxS) and perfluorooctane sulfonic acid (PFOS). The COVID-19 vaccination scheme presented the possibility to assess antigen specific T cell function after vaccination in adults with high PFAS serum levels.</div></div><div><h3>Objectives</h3><div>To investigate the relationship between PFAS exposure and T cell responses after COVID-19 vaccination in a population with varied PFAS exposure.</div></div><div><h3>Methods</h3><div>116 COVID-19 naïve individuals from Ronneby and a background exposed group were included from the PFAS Immune Response After COVID-19 Vaccination cohort (PIRVACoV). All participants received two doses of Spikevax® (Moderna) vaccine. Blood T cells were stimulated with overlapping peptides based on the SARS-CoV-2 spike protein and their production of the cytokines IFN-γ, IL-2, and TNF were measured. The general immune response was assessed by measurement of phytohemagglutinin stimulated cytokines and total immunoglobulin serum levels. Adjusted mixed linear regressions were fitted against measured, address-based and prenatal PFAS exposure indices.</div></div><div><h3>Results</h3><div>PFAS median serum levels differed greatly between participants ever having had contaminated drinking water at home (PFOS 47 ng/mL, 5th to 95th percentile 6–221 ng/mL) and the background group (PFOS 4 ng/mL, 2–9 ng/mL). PFAS exposure was not associated with SARS-CoV-2 specific T cell cytokine responses (e.g., measured PFOS to IFN-γ: +3% per interquartile range PFOS, 95% confidence interval: 10, 17), nor general immune response.</div></div><div><h3>Conclusions</h3><div>This study indicates, in concordance with the PIRVACoV antibody study and other antibody PFAS/COVID-19 studies, that PFAS exposed, healthy adults mount adequate immune responses to mRNA COVID-19 vaccination. EudraCT-number: 2021-000842-16.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"369 ","pages":"Article 143770"},"PeriodicalIF":8.1,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142683451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
It is highly anticipated that efforts will be made to raise the level of industrial effluent reclamation on the background of continuously minimizing waste stream based on preconcentration tool. For this purpose, a triple-doped nanocomposite (TFN-tri) membrane through partially alternative doping spiro-structured 2,2′-dimethyl-1,1′-biphenyl-4,4′-diamine dihydrochloride and flexible 4,4′-bipiperidyl dihydrochloride and continuous incorporating of molybdenum disulfide quantum dots was successfully fabricated. With the assistance of self-synthesized biodegradable flocculant pretreatment, raw hairwork dyeing effluent (HDE) was stably recycled up to 95.1% on the premise of meeting the requirements of the relevant national standard. As a deep processing unit, TFN-tri membrane displayed accurate salt rejection of nearly 66% as expected. More impressively, it also exhibited permeability basically increased by 2.5 folds, while fouling layer thickness, running time and specific energy consumption decreased by 5 μm, 54.7% and 72.5%, respectively, than its counterpart in long-term reuse testing. These changes may mainly be due to the finely expand sub-nanopores coupled with an enhanced electrostatic exclusion and the improved fouling resistance brought about by other critical skin features in terms of smoothness and hydrophilicity optimization. In brief, this study has taken a vigorous and reliable step towards heavily polluted HDE reclamation approaching zero liquid discharge.
{"title":"Performance improvement of triple-doped nanocomposite membrane towards hairwork dyeing effluent reclamation approaching zero liquid discharge","authors":"Yu Liu, Yuefei Song, Chunchun Meng, Zuqiong Jiang, Junhao Zhao, Yanan Wang, Kai Jiang","doi":"10.1016/j.chemosphere.2024.143725","DOIUrl":"10.1016/j.chemosphere.2024.143725","url":null,"abstract":"<div><div>It is highly anticipated that efforts will be made to raise the level of industrial effluent reclamation on the background of continuously minimizing waste stream based on preconcentration tool. For this purpose, a triple-doped nanocomposite (TFN-tri) membrane through partially alternative doping spiro-structured 2,2′-dimethyl-1,1′-biphenyl-4,4′-diamine dihydrochloride and flexible 4,4′-bipiperidyl dihydrochloride and continuous incorporating of molybdenum disulfide quantum dots was successfully fabricated. With the assistance of self-synthesized biodegradable flocculant pretreatment, raw hairwork dyeing effluent (HDE) was stably recycled up to 95.1% on the premise of meeting the requirements of the relevant national standard. As a deep processing unit, TFN-tri membrane displayed accurate salt rejection of nearly 66% as expected. More impressively, it also exhibited permeability basically increased by 2.5 folds, while fouling layer thickness, running time and specific energy consumption decreased by 5 μm, 54.7% and 72.5%, respectively, than its counterpart in long-term reuse testing. These changes may mainly be due to the finely expand sub-nanopores coupled with an enhanced electrostatic exclusion and the improved fouling resistance brought about by other critical skin features in terms of smoothness and hydrophilicity optimization. In brief, this study has taken a vigorous and reliable step towards heavily polluted HDE reclamation approaching zero liquid discharge.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"368 ","pages":"Article 143725"},"PeriodicalIF":8.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142634469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}