Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering最新文献_第7页

Pioneering PVA-degrading microorganism Burkholderia contaminans DW01: microbial characteristics, metabolic strategy, and biodegradation mechanism. pva降解微生物先驱伯克霍尔德菌污染物DW01：微生物特性、代谢策略和生物降解机制。

IF 2 4区环境科学与生态学

Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering Pub Date : 2026-01-01 Epub Date: 2026-07-27 DOI: 10.1080/10934529.2026.2705757

Qishu Yue, Yanbin Zhu, Yingdi Xu, Xinyi Hu, Mingyu Ma, Juan Wu, Ying Fu, Xiaochao Zou, Zihao Yang, Shihong Xu, Dengxin Li, Wenjing Sang

{"title":"Pioneering PVA-degrading microorganism Burkholderia contaminans DW01: microbial characteristics, metabolic strategy, and biodegradation mechanism.","authors":"Qishu Yue, Yanbin Zhu, Yingdi Xu, Xinyi Hu, Mingyu Ma, Juan Wu, Ying Fu, Xiaochao Zou, Zihao Yang, Shihong Xu, Dengxin Li, Wenjing Sang","doi":"10.1080/10934529.2026.2705757","DOIUrl":"10.1080/10934529.2026.2705757","url":null,"abstract":"A Polyvinyl Alcohol (PVA) degrading bacterial strain designated as DW01, was isolated from textile wastewater. Based on 16S rRNA gene sequence analysis (carried out at the EzTaxon server and Ribosomal Database project site), DW01 was identified as Burkholderia contaminans, and its biological characteristics, biodegradation performance, metabolic strategy, and molecular mechanisms were investigated. Haldane kinetic analysis revealed a substrate inhibition pattern, with optimal PVA concentrations of 2.31 g·L-1 for growth and 2.83 g·L-1 for biodegradation. Under sole PVA conditions, DW01 adopts a \"growth-first, biodegradation-secondary\" strategy. Multi-spectroscopic analyses elucidated the PVA biodegradation pathway and its molecular constraints. DW01 acts as a pioneer by cleaving the PVA main chain and generating carbonyl and carboxylic acid intermediates. XRD and 1H NMR revealed the constraints on efficiency: DW01 exhibits stereochemical preference for syndiotactic PVA segments, while isotactic and heterotactic segments are recalcitrant, constituting the molecular bottleneck limiting efficiency; thus, a new mechanism was proposed. The study first reports PVA-degrading capability within Burkholderia, elucidates its \"growth-first\" metabolic strategy, biodegradation mechanism, and tacticity-dependent bottleneck, providing microbial resources and theoretical guidance for PVA control. Construction of \"pioneer-terminator\" consortia via metabolic complementarity and stereochemistry-targeted enzyme engineering are two priority directions to achieve complete PVA mineralization in future research.","PeriodicalId":15671,"journal":{"name":"Journal of Environmental Science and Health Part A-toxic\\/hazardous Substances & Environmental Engineering","volume":" ","pages":"1112-1122"},"PeriodicalIF":2.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148591545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Solar-driven photocatalytic degradation of reactive red 24 using tragacanth gum-stabilized FeS₂/g-C₃N₄ heterostructures for sustainable water remediation. 利用黄花胶稳定的FeS2/g-C3N4异质结构光催化降解活性红24的可持续水修复。

IF 2 4区环境科学与生态学

Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering Pub Date : 2026-01-01 Epub Date: 2026-07-23 DOI: 10.1080/10934529.2026.2700881

Sadia Aroob, Muhammad Babar Taj, Amal Marzoqi Altowerqi, Khloud Al-Thubaiti, Alya Awad Alshahri, Ismat Bibi, Amani Al Solami

{"title":"Solar-driven photocatalytic degradation of reactive red 24 using tragacanth gum-stabilized FeS2/g-C3N4 heterostructures for sustainable water remediation.","authors":"Sadia Aroob, Muhammad Babar Taj, Amal Marzoqi Altowerqi, Khloud Al-Thubaiti, Alya Awad Alshahri, Ismat Bibi, Amani Al Solami","doi":"10.1080/10934529.2026.2700881","DOIUrl":"10.1080/10934529.2026.2700881","url":null,"abstract":"Biopolymeric heterostructure semiconductors are continuously being improved for efficient charge separation. Herein, a Tragacanth gum-mediated FeS2/g-C3N4 heterostructure (TFCN) was successfully prepared for solar-driven degradation of organic dyes. The composite was characterized using XRD, FTIR, SEM, UV-Vis Spectroscopy, Zeta Potential and Brunauer-Emmett-Teller (BET) surface analysis. TFCN produced well-defined and evenly distributed grains measuring 0.56 µm. The zeta potential of -54.10 mV disclosed that the TFCN photocatalyst possessed strong electrostatic repulsion and good colloidal stability. TFCN showed superior sunlight-driven photocatalytic degradation of RR 24 (93.57%) compared to FeS2 (FS), g-C3N4 (CN), following pseudo first order kinetics, exhibiting rate constant of 0.03122 min-1 and R2 value of 0.99087. The high degradation efficiency of TFCN is due to synergism between TG, FS, and CN, which enhances the separation of the photogenerated electron/hole pairs. The proposed photocatalytic mechanism confirmed the prominent role of superoxide (O2•-) radicals in the degradation of RR 24 dye. The negative ΔG° (-7.41 J mol-1 K) and the positive ΔH° (41.47 J mol-1) of TFCN indicated its thermodynamically feasible endothermic nature, making it an attractive candidate for water purification.","PeriodicalId":15671,"journal":{"name":"Journal of Environmental Science and Health Part A-toxic\\/hazardous Substances & Environmental Engineering","volume":" ","pages":"1049-1067"},"PeriodicalIF":2.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148578922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Whole genome sequencing and functional analysis of Enterococcus casseliflavus strain CV10: unveiling genomic determinants for textile dye biodegradation in common effluent treatment plants. casseliflavus肠球菌CV10菌株的全基因组测序和功能分析：揭示普通污水处理厂中纺织染料生物降解的基因组决定因素。

IF 2 4区环境科学与生态学

Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering Pub Date : 2026-01-01 Epub Date: 2026-06-02 DOI: 10.1080/10934529.2026.2682090

Varsha Kachhela, Jalpa Rank, Riya Desai, Mayur Mahajan, Chandrashekar Mootapally, Ramesh Kothari, Neelam Nathani, Charmy Kothari

{"title":"Whole genome sequencing and functional analysis of Enterococcus casseliflavus strain CV10: unveiling genomic determinants for textile dye biodegradation in common effluent treatment plants.","authors":"Varsha Kachhela, Jalpa Rank, Riya Desai, Mayur Mahajan, Chandrashekar Mootapally, Ramesh Kothari, Neelam Nathani, Charmy Kothari","doi":"10.1080/10934529.2026.2682090","DOIUrl":"10.1080/10934529.2026.2682090","url":null,"abstract":"Textile industrial effluents, notably from large clusters such as Jetpur in Gujarat, India, present a formidable challenge due to their high content of recalcitrant azo dyes, heavy metals, and organic pollutants, often overwhelming conventional physicochemical treatment. This study presents the whole-genome sequencing and functional annotation of Enterococcus casseliflavus strain CV10, isolated from the Jetpur Common Effluent Treatment Plant, a bacterium demonstrating potent dye biodegradation capacity. The assembled 3.5 Mb genome exhibited 98.7% completeness and revealed an array of genes and pathways supporting both reductive and oxidative dye biodegradation, including NAD(P)H-dependent oxidoreductases, FMN-dependent azoreductases, peroxidases, multicopper oxidases, and alkanesulfonate monooxygenases. KEGG and COG analyses enriched for ABC transporters and pathways of aromatic compound metabolism, oxidative stress response, and xenobiotic degradation. AntiSMASH analysis identified secondary metabolite biosynthetic clusters for redox-active phenazines and protective carotenoids, suggesting adaptive advantages in harsh, pollutant-rich environments. Phylogenomic analysis confirmed close relatedness to reference E. casseliflavus strains. Altogether, these features underpin metabolic versatility, robust stress tolerance, and advanced regulatory mechanisms, positioning E. casseliflavus CV10 as a promising candidate for genome-informed bioaugmentation strategies in textile wastewater treatment. This work extends the genomic foundation for leveraging specialized bacteria in bioremediation, advancing sustainable and efficient remediation practices for complex industrial effluents.","PeriodicalId":15671,"journal":{"name":"Journal of Environmental Science and Health Part A-toxic\\/hazardous Substances & Environmental Engineering","volume":" ","pages":"790-799"},"PeriodicalIF":2.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148143218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Simultaneous determination of polycyclic aromatic hydrocarbons, phthalates, and bisphenol a in water samples using solid-phase extraction and GC-MS/MS. 固相萃取和GC-MS/MS同时测定水样中的多环芳烃、邻苯二甲酸酯和双酚a。

IF 2 4区环境科学与生态学

Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering Pub Date : 2026-01-01 Epub Date: 2026-02-13 DOI: 10.1080/10934529.2026.2627808

Thi Yen Pham, Thi Thu Trang Nguyen, Duc Long Huynh, Xuan Thanh Thao Le, Manh Van Do

{"title":"Simultaneous determination of polycyclic aromatic hydrocarbons, phthalates, and bisphenol a in water samples using solid-phase extraction and GC-MS/MS.","authors":"Thi Yen Pham, Thi Thu Trang Nguyen, Duc Long Huynh, Xuan Thanh Thao Le, Manh Van Do","doi":"10.1080/10934529.2026.2627808","DOIUrl":"10.1080/10934529.2026.2627808","url":null,"abstract":"Polycyclic aromatic hydrocarbons (PAHs), phthalate esters (PAEs), and bisphenol A (BPA) are persistent environmental contaminants commonly encountered in aquatic environments. In this study, we report a sensitive and reproducible method for the simultaneous quantification of 16 priority PAHs, six PAEs, and BPA in surface water. The samples were treated by solid-phase extraction (SPE) using C18 cartridges prior to gas chromatography-tandem mass spectrometry (GC-MS/MS) analysis in selected reaction monitoring (SRM) mode. The developed method was validated for accuracy, precision, and linearity for the 23 organic compounds found in the range of 0.1-200 ng/mL with good linearity (R2 = 0.9936-0.9993), while limits of detection (LOD) and limits of quantification (LOQ) were shown to be in the ranges LOD = 0.01-0.54 ng/mL and LOQ = 0.03-1.63 ng/mL. Recoveries are satisfactory (76.4-115.2%) with relative standard deviations less than 10%. This method allows the simultaneous extraction and quantification of multiple organic contaminants in a single run, and hence, significantly reduces the analysis time and solvent usage. The results confirmed that the method is accurate, highly precise, and suitable for routine monitoring of trace organic pollutants in environmental water samples.","PeriodicalId":15671,"journal":{"name":"Journal of Environmental Science and Health Part A-toxic\\/hazardous Substances & Environmental Engineering","volume":" ","pages":"38-46"},"PeriodicalIF":2.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146180578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Preparation and performance of PVA-PQ hydrogel electrode for capacitive deionization. PVA-PQ电容去离子水凝胶电极的制备及性能研究。

IF 2 4区环境科学与生态学

Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering Pub Date : 2026-01-01 Epub Date: 2026-05-26 DOI: 10.1080/10934529.2026.2674450

Yinyan Guan, Yanjie Zhang, Shujun Dong, Dan Li, Weichun Gao, Cong Geng, Jiayu Lv, Shiyue Zhang, Jiyan Liang

{"title":"Preparation and performance of PVA-PQ hydrogel electrode for capacitive deionization.","authors":"Yinyan Guan, Yanjie Zhang, Shujun Dong, Dan Li, Weichun Gao, Cong Geng, Jiayu Lv, Shiyue Zhang, Jiyan Liang","doi":"10.1080/10934529.2026.2674450","DOIUrl":"10.1080/10934529.2026.2674450","url":null,"abstract":"Capacitive deionization is an emerging water treatment technology that leverages the principles of electrical double-layer formation, specifically targeting water with moderate to low salinity. However, due to the presence of the co-ion effect, both the desalination rate and charge efficiency are reduced. To address this issue, a PVA-based composite hydrogel electrode modified with an ion-exchange polymer was developed. PVA hydrogel electrodes with satisfactory mechanical and desalination properties were obtained by adjusting the crosslinking density and the concentration of the ion exchange polymer. The composite hydrogel electrode exhibits a more hydrophilic surface due to the PVA matrix. When used as cathode in an asymmetric CDI device, the composite electrode adsorbs cations (Na+) and reaches a salt adsorption capacity of 8.49 mg·g-1 and a specific capacitance of 118.0 F·g-1. While the charge efficiency of CDI device is 53.82%. The quaternary ammonium groups of the ion-exchange polymer on the cathode surface repel co-ions (Cl-) via Donnan exclusion, effectively mitigating the co-ion effect. In addition, it exhibits excellent long-time durability. After 50 cycles, the electrode exhibited a specific capacitance of 118.0 F·g-1 with 93.66% retention of its initial capacitance (126.1 F·g-1), demonstrating minimal performance degradation. Notably, the salt adsorption capacity retention rate remained stable at 92.4% under continuous charge-discharge operation, further confirming the structural robustness of the PVA composite gel matrix. The composite hydrogel electrode provides a novel strategy for the development of CDI technology.","PeriodicalId":15671,"journal":{"name":"Journal of Environmental Science and Health Part A-toxic\\/hazardous Substances & Environmental Engineering","volume":" ","pages":"650-667"},"PeriodicalIF":2.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148031428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Mapping and visualization of global research progress on endocrine-disrupting chemicals and fetal development: a bibliometric analysis (2014-2024). 内分泌干扰化学物质与胎儿发育全球研究进展的映射和可视化：文献计量分析（2014-2024）。

IF 2 4区环境科学与生态学

Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering Pub Date : 2026-01-01 Epub Date: 2026-02-16 DOI: 10.1080/10934529.2026.2630144

Haodongfang Zhang, Fan Yang, Lixue Ouyang

{"title":"Mapping and visualization of global research progress on endocrine-disrupting chemicals and fetal development: a bibliometric analysis (2014-2024).","authors":"Haodongfang Zhang, Fan Yang, Lixue Ouyang","doi":"10.1080/10934529.2026.2630144","DOIUrl":"10.1080/10934529.2026.2630144","url":null,"abstract":"A growing body of evidence links prenatal exposure to endocrine-disrupting chemicals (EDCs) to adverse fetal outcomes, including neurodevelopmental disorders, reproductive abnormalities, and metabolic diseases. This study provides a comprehensive bibliometric analysis of global research trends in EDCs and fetal development from 2014 to 2024, highlighting key research areas and emerging hotspots. A total of 7,758 publications were retrieved from the Web of Science Core Collection and analyzed using VOSviewer, CiteSpace, and R software. The analysis revealed the USA, China, and Canada as the leading contributing countries, with major institutions including the University of California System and Harvard University. Prominent journals publishing in this field were PLoS ONE, Scientific Reports, and Environment International. Core research themes, identified through keyword analysis, centered on \"prenatal exposure,\" \"birth weight,\" and \"growth.\" Notably, burst keyword analysis since 2020 identified emerging research frontiers such as \"management,\" \"impact,\" \"transport,\" \"proteins,\" \"invasion,\" and \"nutrition.\" These themes reflect a shift toward understanding the molecular mechanisms, broader ecological impacts, and potential mitigation strategies of EDC exposure. This analysis offers a valuable overview of the research landscape, underscoring the need for future interdisciplinary investigations that integrate toxicology, developmental biology, and public health to effectively address the risks of prenatal EDC exposure.","PeriodicalId":15671,"journal":{"name":"Journal of Environmental Science and Health Part A-toxic\\/hazardous Substances & Environmental Engineering","volume":" ","pages":"88-97"},"PeriodicalIF":2.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146201947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

The role of cement-derived atmospheric dust in soil contamination: a pathway analysis for ecosystem and food chain risks. 水泥衍生的大气粉尘在土壤污染中的作用：生态系统和食物链风险的途径分析。

IF 2 4区环境科学与生态学

Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering Pub Date : 2026-01-01 Epub Date: 2026-03-26 DOI: 10.1080/10934529.2026.2646145

Thompson Faraday Ediagbonya, Micheal Oluwatosin Ige, Marian Onyemaechi Ashikodi, Zekeri Joseph Okosun, Suliat Eniola Balogun, Christopher Mupenzi

{"title":"The role of cement-derived atmospheric dust in soil contamination: a pathway analysis for ecosystem and food chain risks.","authors":"Thompson Faraday Ediagbonya, Micheal Oluwatosin Ige, Marian Onyemaechi Ashikodi, Zekeri Joseph Okosun, Suliat Eniola Balogun, Christopher Mupenzi","doi":"10.1080/10934529.2026.2646145","DOIUrl":"10.1080/10934529.2026.2646145","url":null,"abstract":"This study assessed the environmental and health risks posed by hazardous elements in dust from cement production and storage facilities in Ogun and Ondo States, Nigeria. Dust samples were collected around of cement stores, and Inductively Coupled Plasma Optical Emission Spectroscopy (ICPOES) was used for analysis, to identify and quantify hazardous elements. Concentrations were compared to regulatory limits from agencies such as the EPA, WHO, IAEA, and OSHA. Elevated levels of several hazardous elements were found, with manganese (Mn) in Location A reaching 75.2 ppm, surpassing the EPA limit of 50 ppm. High levels of hafnium (Hf) and thorium (Th) were also detected, likely due to industrial emissions. The study revealed spatial variations in contamination, with some areas more affected than others. Strong correlations between elements like cerium (Ce) and lanthanum (La) suggested common contamination sources. The study highlights significant environmental and health risks from dust contamination around cement stores, with elevated element levels posing threats to air, soil, and water quality. Urgent regulatory action and mitigation strategies are needed to reduce pollution and protect public health in these regions.","PeriodicalId":15671,"journal":{"name":"Journal of Environmental Science and Health Part A-toxic\\/hazardous Substances & Environmental Engineering","volume":" ","pages":"335-345"},"PeriodicalIF":2.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147520705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Biodegradation of trimethoprim antibiotic by white rot fungus Trametes hirsuta D7 and its laccase: quantitative analysis, molecular docking, and metabolic pathway. 白腐菌毛毡菌D7及其漆酶对甲氧苄氨嘧啶的生物降解：定量分析、分子对接及代谢途径

IF 2 4区环境科学与生态学

Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering Pub Date : 2026-01-01 Epub Date: 2026-06-29 DOI: 10.1080/10934529.2026.2692270

Maulida Oktaviani, Ananda Novia Hi-Pattu, Deni Zulfiana, Silviyani Nurul Karimah, Muhamad Ilham, Dede Heri Yuli Yanto

{"title":"Biodegradation of trimethoprim antibiotic by white rot fungus Trametes hirsuta D7 and its laccase: quantitative analysis, molecular docking, and metabolic pathway.","authors":"Maulida Oktaviani, Ananda Novia Hi-Pattu, Deni Zulfiana, Silviyani Nurul Karimah, Muhamad Ilham, Dede Heri Yuli Yanto","doi":"10.1080/10934529.2026.2692270","DOIUrl":"10.1080/10934529.2026.2692270","url":null,"abstract":"Antibiotic contamination in water and the environment is a major concern because it can potentially increase the risk of antimicrobial resistance (AMR). Trimethoprim (TMP) is challenging to degrade due to its stable chemical structure and low water solubility. This study examined TMP degradation by the white-rot fungus Trametes hirsuta D7 and its laccase enzyme. Using whole fungal mycelia at room temperature for 7 days, the fungus degraded 55.89% of TMP, with a laccase activity of 0.31 U/mL. Crude laccase treatment achieved 77.72% TMP removal within 4 h, while the laccase-ABTS system achieved complete degradation. Antibacterial assays against pathogenic bacteria demonstrated that the metabolites formed exhibited reduced antibacterial activity, with decreases of 48.29% and 21.43% against Staphylococcus aureus and Escherichia coli, respectively. LC-HRMS analysis indicated the formation of 2,6-diaminopyrimidin-5-ol as a hydroxylated metabolite via degradation. Four transformation products (TPs) (TP307, TP151, TP169, and TP253) were also identified, suggesting demethylation, hydroxylation, benzyl oxidation, and aromatic ring cleavage of TMP. Molecular docking analysis revealed a binding energy of -5.809 kcal/mol for the interaction between laccase and the TMP complex. This study highlights a promising capability of T. hirsuta D7 and its laccase enzyme for efficient bioremediation of TMP in contaminated environments.","PeriodicalId":15671,"journal":{"name":"Journal of Environmental Science and Health Part A-toxic\\/hazardous Substances & Environmental Engineering","volume":" ","pages":"923-937"},"PeriodicalIF":2.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148352261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

HPLC-MS method for tracing multiclass PPCPs in soil and water: optimization of ionization and extraction strategies. HPLC-MS法追踪土壤和水中多类PPCPs：电离和提取策略的优化。

IF 2 4区环境科学与生态学

Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering Pub Date : 2026-01-01 Epub Date: 2026-07-07 DOI: 10.1080/10934529.2026.2695547

Dileep Singh, Smriti Gupta, Thomas Boving, Bhanu Prakash Vellanki

{"title":"HPLC-MS method for tracing multiclass PPCPs in soil and water: optimization of ionization and extraction strategies.","authors":"Dileep Singh, Smriti Gupta, Thomas Boving, Bhanu Prakash Vellanki","doi":"10.1080/10934529.2026.2695547","DOIUrl":"10.1080/10934529.2026.2695547","url":null,"abstract":"A high-performance liquid chromatography-mass spectrometry (HPLC-MS) method was developed for the determination of 27 multiclass pharmaceuticals and personal care products (PPCPs) in soils and 30 PPCPs in surface water and groundwater using atmospheric pressure chemical ionization (APCI) and electrospray ionization (ESI). Conventional PPCP methods often suffer from limited analyte coverage and pronounced matrix effects, particularly in soils, challenges that are further exacerbated in conventional single-quadrupole HPLC-MS systems compared to MS/MS platforms that are not readily accessible in many developing regions. To address these challenges, the method targeted diverse compound classes, including antibiotics, analgesics, non-steroidal anti-inflammatory drugs, β-blockers, lipid regulators, estrogens, and other emerging contaminants, supported by systematic optimization of extraction and ionization conditions. A single extraction protocol enabled simultaneous analysis of 27 PPCPs in soils with APCI providing broader analyte coverage and reduced matrix effects compared to ESI. Median quantification limits were 1.5 ng g-1 for soils, 17.2 ng L-1 for surface water, and 5.8 ng L-1 for groundwater. Application to samples from the Yamuna River Basin (Delhi, India) revealed at least 15 PPCPs across all matrices. The study demonstrates that optimized single-quadrupole HPLC-MS provides a sensitive and accessible approach for routine multiclass PPCP monitoring.","PeriodicalId":15671,"journal":{"name":"Journal of Environmental Science and Health Part A-toxic\\/hazardous Substances & Environmental Engineering","volume":" ","pages":"969-984"},"PeriodicalIF":2.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148396696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Study on biodegradation dynamics of biopolymers under aerobic composting environment. 好氧堆肥环境下生物聚合物的降解动力学研究。

IF 2 4区环境科学与生态学

Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering Pub Date : 2026-01-01 Epub Date: 2026-08-10 DOI: 10.1080/10934529.2026.2713879

Partha Kundu, Mariyam Muhammed, Ananthakrishnan G, Aryajyothis C, Saharuba Pm

{"title":"Study on biodegradation dynamics of biopolymers under aerobic composting environment.","authors":"Partha Kundu, Mariyam Muhammed, Ananthakrishnan G, Aryajyothis C, Saharuba Pm","doi":"10.1080/10934529.2026.2713879","DOIUrl":"10.1080/10934529.2026.2713879","url":null,"abstract":"Biodegradation of biopolymers, which included, PLA (polylactic acid) pellets, PLA film, PBS (polybutylene succinate) pellets, and commercial bioplastics, were studied at various temperatures (40-60 °C), with controlled compost conditions, and incubation periods under aerobic conditions. Most of the biopolymers showed significant cumulative carbon dioxide (CO2) production during the first 20 days, followed by biodegradation log phase and remained in the stationary phase for the remaining days of incubation in compost C1, C2, C3. Initial physio-chemical characteristics, which includes total solids (TS), volatile solids (VS), and carbon content, were moderately high for PLA film as compared to other bioplymers, i.e., 92.5%, 75.4%, 57.3% and 52.34%, respectively. The amount of weight loss of PLA film (>3%) was comparatively higher, followed by PBS, PLA pellets, and bioplastics, respectively. Biodegradation results showed that mineralization was varied with polymer type, compost composition, and temperature. Percentage biodegradation of all biopolymer showed trend as PLA film > PLA pellets > Bioplastic > PBS pellets. Higher degradation was observed under thermophilic conditions (∼69%), and compost C3 consistently exhibited the highest biodegradation efficiency. X-ray diffraction analysis revealed a decrease in the crystallinity index in the degraded biopolymer samples, indicating structural changes and a reduction in crystalline order during biodegradation. Bacterial species in different compost media involved in the biodegradation process was identified as Bacillota sp. Kinetic analysis showed that biodegradation of biopolymers followed Hill model with very high correlation coefficients (R2 ≥ 0.99).","PeriodicalId":15671,"journal":{"name":"Journal of Environmental Science and Health Part A-toxic\\/hazardous Substances & Environmental Engineering","volume":" ","pages":"1150-1166"},"PeriodicalIF":2.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148706729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

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