The levels and distribution of organochlorine pesticides (OCPs) in sediments from the Haihe River, China [An article from: Chemosphere]

This digital document is a journal article from Chemosphere, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
The levels and distribution patterns of the selected organochlorine pesticides (OCPs=p,p'-DDT, o,p'-DDT, p,p'-DDE, p,p'-DDD, @a-, @b-, @c- and @d-HCH) in surficial sediments from the Haihe River and Dagu Drainage River of Tianjin were investigated by means of gas chromatography coupled with micro-electronic capture detector (GC-@mECD). Concentrations of OCPs in the sediments from the Haihe River ranged from 1.88 to 18.76ngg^-^1 (mean 7.33ngg^-^1) for @?HCH, 0.32-80.18ngg^-^1 (mean 15.94ngg^-^1) for @?DDT. Compared with the Haihe River, the Dagu Drainage River was much more contaminated by HCHs and DDTs, wherein @?HCH ranged from 33.24 to 141.03ngg^-^1 (mean 87.74ngg^-^1) and @?DDT ranged from 3.60 to 83.49ngg^-^1 with a mean value of 35.52ngg^-^1. The concentration distribution of @?DDT and @?HCH was different indicated their different contamination sources. Composition analyses indicated that a recent usage or discharge of HCH and DDT into the Dagu Drainage River.