Incidence of organochlorine pesticides in soils of Shenzhen, China

To determine the incidence of organochlorine pesticides (OCPs) in soil in a rapid urbanization region, soil samples from various land use types in Shenzhen were collected in winter, 2007. The concentration of dichlorodiphenyltrichloroethanes (DDTs) and hexachlorocyclohexanes (HCHs) ranged from non-d...

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Bibliographic Details
Published in:Journal of environmental monitoring 2011-04, Vol.13 (4), p.951-956
Main Authors: Ni, Hong-Gang, Cao, Shan-Ping, Ji, Ling-Yun, Zeng, Hui
Format: Article
Language:English
Subjects:
Adolescent
Adult
Child
China
Environmental Exposure
Female
Gas Chromatography-Mass Spectrometry
Humans
Hydrocarbons, Chlorinated - analysis
Male
Pesticides - analysis
Soil Pollutants - analysis
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Summary:To determine the incidence of organochlorine pesticides (OCPs) in soil in a rapid urbanization region, soil samples from various land use types in Shenzhen were collected in winter, 2007. The concentration of dichlorodiphenyltrichloroethanes (DDTs) and hexachlorocyclohexanes (HCHs) ranged from non-detected to 149 ng g(-1) and 19 to 88 ng g(-1), respectively. The highest levels of OCPs were observed in soil from traffic and industry areas, reflecting that intensive human disturbance make the soil pollution accumulation more disperse. HCHs and DDTs profiles revealed that the sources were associated mainly with lindane and technical DDTs, respectively, while HCHs in the soil of Shenzhen might originate from both recent and historical sources. The loss of OCPs by soil erosion will enter surface runoff and impose impact on the water environment. Non-dietary exposure estimation indicates that children were the most sensitive group. The average daily exposure to OCPs for males was more serious than for females. Non-dietary exposure to DDTs and HCHs in residential blocks of Shenzhen were far below the acceptable daily intake recommended by the Food and Agriculture Organization/World Health Organization.
ISSN:1464-0325
1464-0333
DOI:10.1039/c0em00737d