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Int. J. Environ. Res. Public Health 2019, 16(1), 146; https://doi.org/10.3390/ijerph16010146

Determination of Occurrences, Distribution, Health Impacts of Organochlorine Pesticides in Soils of Central China

1
Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China
2
Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan 430074, China
3
Department of Pollution Ecology, University of Chinese Academy of Sciences, Beijing 100049, China
*
Author to whom correspondence should be addressed.
Received: 28 November 2018 / Revised: 23 December 2018 / Accepted: 2 January 2019 / Published: 7 January 2019
(This article belongs to the Section Environmental Health)
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Abstract

Organochlorine pesticides are groups of chemicals applied to prevent pest and insect infestation. This study was aimed at investigating the concentration, potential sources, cancer risk and ecological toxicity of organochlorine pesticides (OCPs) in Huangpi district, Wuhan, China. Eight OCPs in soil samples collected from four land-use types at depths of 0–10 and 10–20 cm were examined. Sample extraction was carried out by solid phase matrix extraction method and analyzed using Agilent gas chromatograph 7890B equipped with electron capture detectors (ECD). The total concentration of OCPs ranged from 0.00–32.7 ng g−1 in the surface and 0.01–100.45 ng g−1 in the subsurface soil layer. Beta hexachlorocyclohexanes (β-HCH) with 2.20 and 7.71 ng g−1 in the surface and subsurface soil layers, respectively, was the dominant compound. The mean concentrations of OCPs in all samples were less than the threshold values for hexachlorocyclohexanes (HCHs) and dichlorodiphenyltrichloroethane (DDTs) in China soil. Concentration of OCPs in the four land-use types were in the order of: paddy field > barren land > farmland > plastic greenhouse. Results of composition analysis revealed recent application of lindane as a major and historical use of new technical HCHs as a minor source of HCHs. On the other hand, application of new technical p,p’-DDT is the main source of DDTs in the study area. The estimated lifetime average daily dose, incremental lifetime cancer risks and hazard quotient values revealed that there is less likelihood of carcinogenic and noncarcinogenic health risks on the local residents. View Full-Text
Keywords: organochlorine pesticides; dichlorodiphenyltrichloroethane; hexachlorocyclohexanes; cancer risk; land-use organochlorine pesticides; dichlorodiphenyltrichloroethane; hexachlorocyclohexanes; cancer risk; land-use
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Gereslassie, T.; Workineh, A.; Atieno, O.J.; Wang, J. Determination of Occurrences, Distribution, Health Impacts of Organochlorine Pesticides in Soils of Central China. Int. J. Environ. Res. Public Health 2019, 16, 146.

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