دورية أكاديمية
Selected pesticidal POPs and metabolites in the soil of five Vietnamese cities: Sources, fate, and health risk implications.
| العنوان: | Selected pesticidal POPs and metabolites in the soil of five Vietnamese cities: Sources, fate, and health risk implications. |
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| المؤلفون: | Ding Y; State Key Laboratory of Biogeology and Environmental Geology & School of Environmental Studies, China University of Geosciences, Wuhan, 430078, China; Key Laboratory of Land Resources Evaluation and Monitoring in Southwest, Ministry of Education, Sichuan Normal University, Chengdu, 610066, China. Electronic address: cugdingyang@163.com., Qin S; State Key Laboratory of Biogeology and Environmental Geology & School of Environmental Studies, China University of Geosciences, Wuhan, 430078, China; Institute of Eco-Environment Research, Guangxi Academy of Sciences, Nanning, 530007, China., Huang H; State Environmental Protection Key Laboratory of Water Environmental Simulation and Pollution Control, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, 510530, China., Tang X; Key Laboratory of Land Resources Evaluation and Monitoring in Southwest, Ministry of Education, Sichuan Normal University, Chengdu, 610066, China., Li X; Key Laboratory of Land Resources Evaluation and Monitoring in Southwest, Ministry of Education, Sichuan Normal University, Chengdu, 610066, China., Zhang Y; State Key Laboratory of Biogeology and Environmental Geology & School of Environmental Studies, China University of Geosciences, Wuhan, 430078, China., Chen W; College of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541004, China., Nguyen LP; State Key Laboratory of Biogeology and Environmental Geology & School of Environmental Studies, China University of Geosciences, Wuhan, 430078, China., Qi S; State Key Laboratory of Biogeology and Environmental Geology & School of Environmental Studies, China University of Geosciences, Wuhan, 430078, China. Electronic address: shihuaqi@cug.edu.cn. |
| المصدر: | Environmental pollution (Barking, Essex : 1987) [Environ Pollut] 2024 Feb 01; Vol. 342, pp. 123043. Date of Electronic Publication: 2023 Nov 28. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Elsevier Applied Science Publishers Country of Publication: England NLM ID: 8804476 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-6424 (Electronic) Linking ISSN: 02697491 NLM ISO Abbreviation: Environ Pollut Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Barking, Essex, England : Elsevier Applied Science Publishers, c1987- |
| مواضيع طبية MeSH: | Pesticides*/analysis , Hydrocarbons, Chlorinated*/analysis , Soil Pollutants*/analysis, DDT/analysis ; Dichlorodiphenyl Dichloroethylene/analysis ; Soil/chemistry ; Vietnam ; Dicofol ; Cities ; Hexachlorocyclohexane/analysis ; Environmental Monitoring ; China |
| مستخلص: | Large quantities of organochlorine pesticides (OCPs) have been used in tropical regions. The fate processes and risks of these legacy contaminants in the tropics are poorly understood. Herein, we investigated the occurrence of three classes of widely used OCPs and their metabolites in surface and core soil from five cities across Vietnam with a prevalent tropical monsoon climate and a long history of OCP application. We aimed to elucidate migration potentials, degradation conditions, and transformation pathways and assess current health risks of these contaminants. Generally, the concentrations of OCPs and metabolites in the soil core were slightly lower than those in surface soil except for hexachlorocyclohexane (HCH) isomers. 2,2-bis(4-chlorophenyl)-1,1,1-trichloroethane (p,p'-DDT), 2,2-bis(4-chlorophenyl)-1,1-dichloroethylene (p,p'-DDE), the sum of dicofol and 4,4'-dichlorobenzophenone (p,p'-DBP), and 2,2-bis(4-chlorophenyl)-1,1-dichloroethane (p,p'-DDD) were the most abundant compounds in both surface and core soils. A uniform distribution of HCHs (the sum of α-, β-, γ-, and δ-HCH) at trace levels was found in almost all soils, serving as evidence of the lack of recent use of HCH pesticides. Higher concentrations of DDTs (the sum of DDT, DDD, and DDE) were observed in north-central Vietnamese soil, whereas appreciable concentrations of ENDs (the sum of α- and β-endosulfan and endosulfan sulfate) were only found in southern Vietnamese soils. Empirical diagnostic ratios indicated residuals of DDTs were mainly from technical DDT rather than dicofol, whereas aged HCHs could be explained by the mixture of lindane and technical HCH. Both historical applications and recent input explain DDTs and ENDs in Vietnamese soil. Total organic carbon performs well in preventing vertical migration of more hydrophobic DDTs and ENDs. The dominant transformation pathway of DDT in surface soil followed p,p'-DDE→2,2-bis(4-chlorophenyl)-1-chloroethylene or p,p'-DDMU→1,1-bis(4-chlorophenyl)ethylene or p,p'-DDNU→p,p'-DBP, whereas the amount of p,p'-DDMU converted from p,p'-DDD and p,p'-DDE is similar in soil core. Non-cancer risks of OCPs and metabolites in all soils and cancer risks of those chemicals in core soils were below the safety threshold, whereas a small proportion of surface soil exhibited potential cancer risk after considering the exposure pathway of vegetable intake. This study implied that organic matter in non-rainforest tropical deep soils still could hinder the leaching of hydrophobic organic contaminants as in subtropical and temperate soils. When lands with a history of OCP application are used for agricultural purposes, dietary-related risks need to be carefully assessed. Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. (Copyright © 2023 Elsevier Ltd. All rights reserved.) |
| فهرسة مساهمة: | Keywords: Degradation products; Health risk assessment; Organochlorine pesticides (OCPs); Persistent organic pollutants (POPs); Total organic carbon (TOC); Tropical regions |
| المشرفين على المادة: | 0 (Pesticides) CIW5S16655 (DDT) 4M7FS82U08 (Dichlorodiphenyl Dichloroethylene) 0 (Soil) W4WMM0WS91 (Dicofol) 59NEE7PCAB (Hexachlorocyclohexane) 0 (Hydrocarbons, Chlorinated) 0 (Soil Pollutants) |
| تواريخ الأحداث: | Date Created: 20231130 Date Completed: 20240126 Latest Revision: 20240126 |
| رمز التحديث: | 20240126 |
| DOI: | 10.1016/j.envpol.2023.123043 |
| PMID: | 38036093 |
| قاعدة البيانات: | MEDLINE |
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