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| Distribution characteristics of organochlorine pesticides in soil samples from the northern Wuyi Mountains, Fujian, Southeast China |
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Abstract 106 soil samples were collected from the northern Wuyi Mountains. The concentrations of OCPs in the samples were determined by GC-ECD with the internal standard method. The results showed that HCHs and DDTs were found widely in all samples and the concentrations of HCHs, DDTs in soils of the northern Wuyi Mountains were in the ranges of 1.05~25.07 ng/g (with a mean 3.98 ng/g), 0.01~107.99 ng/g (with a mean 7.48 ng/g), respectively. The residue level in different lands was in the order as follows: paddy field > vegetable land > woodland. The results also showed that the soils in the study area have polluted lightly by DDTs, but not been polluted by HCHs. Compared to the reference data of Antarctic and Tebat area, the status of this area can be called “low pollution”. Through source analysis,β-HCH was the major source of HCHs. The results indicated that HCHs in this area were historical application. But, new DDTs (dicofol) could be used recently in this area.
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Received: 12 September 2010
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