Organochlorine Pesticides in Karst Soil: Levels, Distribution, and Source Diagnosis

Excessive reclamation and improper use of agrochemicals in karst areas leads to serious non-point source pollution, which is of great concern and needs to be controlled, since contaminants can easily pollute groundwater due to the thin patchy soil and developed karst structures. The occurrences of o...

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Autores principales:	Wei Chen, Faming Zeng, Wei Liu, Jianwei Bu, Guofeng Hu, Songshi Xie, Hongyan Yao, Hong Zhou, Shihua Qi, Huanfang Huang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	illegal use non-point source pollution agricultural use veterinary use Three Gorges Medicine R
Acceso en línea:	https://doaj.org/article/0aff4fbc62094ba89914a7d1e862028c
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spelling	oai:doaj.org-article:0aff4fbc62094ba89914a7d1e862028c2021-11-11T16:42:11ZOrganochlorine Pesticides in Karst Soil: Levels, Distribution, and Source Diagnosis10.3390/ijerph1821115891660-46011661-7827https://doaj.org/article/0aff4fbc62094ba89914a7d1e862028c2021-11-01T00:00:00Zhttps://www.mdpi.com/1660-4601/18/21/11589https://doaj.org/toc/1661-7827https://doaj.org/toc/1660-4601Excessive reclamation and improper use of agrochemicals in karst areas leads to serious non-point source pollution, which is of great concern and needs to be controlled, since contaminants can easily pollute groundwater due to the thin patchy soil and developed karst structures. The occurrences of organochlorine pesticides (OCPs) in karst soil were investigated by analyzing 25 OCPs in the karst soils near the Three Gorges Dam, China. The total concentrations of OCPs ranged 161–43,100 (6410 ± 9620) pg/g, with the most abundant compounds being <i>p</i>,<i>p’</i>-DDT and mirex. The concentration differences between the orchard and vegetable field and between upstream and downstream presented the influences of land-use type and water transport on the OCP spatial distributions. Composition analysis indicated the possible fresh inputs of lindane, technical DDT, aldrin, endrin, mirex, and methoxychlor. Their illegal uses implied an insufficient agrochemical management system in undeveloped karst areas. Principal component analysis with multiple linear regression analysis characterized the dominant sources from current agricultural use and current veterinary use in the study area. OCPs in the soils might not pose significant cancer risk for the residents, but they need to be controlled due to their illegal uses and bioaccumulation effect via the food chain.Wei ChenFaming ZengWei LiuJianwei BuGuofeng HuSongshi XieHongyan YaoHong ZhouShihua QiHuanfang HuangMDPI AGarticleillegal usenon-point source pollutionagricultural useveterinary useThree GorgesMedicineRENInternational Journal of Environmental Research and Public Health, Vol 18, Iss 11589, p 11589 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	illegal use non-point source pollution agricultural use veterinary use Three Gorges Medicine R
spellingShingle	illegal use non-point source pollution agricultural use veterinary use Three Gorges Medicine R Wei Chen Faming Zeng Wei Liu Jianwei Bu Guofeng Hu Songshi Xie Hongyan Yao Hong Zhou Shihua Qi Huanfang Huang Organochlorine Pesticides in Karst Soil: Levels, Distribution, and Source Diagnosis
description	Excessive reclamation and improper use of agrochemicals in karst areas leads to serious non-point source pollution, which is of great concern and needs to be controlled, since contaminants can easily pollute groundwater due to the thin patchy soil and developed karst structures. The occurrences of organochlorine pesticides (OCPs) in karst soil were investigated by analyzing 25 OCPs in the karst soils near the Three Gorges Dam, China. The total concentrations of OCPs ranged 161–43,100 (6410 ± 9620) pg/g, with the most abundant compounds being <i>p</i>,<i>p’</i>-DDT and mirex. The concentration differences between the orchard and vegetable field and between upstream and downstream presented the influences of land-use type and water transport on the OCP spatial distributions. Composition analysis indicated the possible fresh inputs of lindane, technical DDT, aldrin, endrin, mirex, and methoxychlor. Their illegal uses implied an insufficient agrochemical management system in undeveloped karst areas. Principal component analysis with multiple linear regression analysis characterized the dominant sources from current agricultural use and current veterinary use in the study area. OCPs in the soils might not pose significant cancer risk for the residents, but they need to be controlled due to their illegal uses and bioaccumulation effect via the food chain.
format	article
author	Wei Chen Faming Zeng Wei Liu Jianwei Bu Guofeng Hu Songshi Xie Hongyan Yao Hong Zhou Shihua Qi Huanfang Huang
author_facet	Wei Chen Faming Zeng Wei Liu Jianwei Bu Guofeng Hu Songshi Xie Hongyan Yao Hong Zhou Shihua Qi Huanfang Huang
author_sort	Wei Chen
title	Organochlorine Pesticides in Karst Soil: Levels, Distribution, and Source Diagnosis
title_short	Organochlorine Pesticides in Karst Soil: Levels, Distribution, and Source Diagnosis
title_full	Organochlorine Pesticides in Karst Soil: Levels, Distribution, and Source Diagnosis
title_fullStr	Organochlorine Pesticides in Karst Soil: Levels, Distribution, and Source Diagnosis
title_full_unstemmed	Organochlorine Pesticides in Karst Soil: Levels, Distribution, and Source Diagnosis
title_sort	organochlorine pesticides in karst soil: levels, distribution, and source diagnosis
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/0aff4fbc62094ba89914a7d1e862028c
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Organochlorine Pesticides in Karst Soil: Levels, Distribution, and Source Diagnosis

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