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Environ Pollut. 2008 Nov;156(1):168-73. doi: 10.1016/j.envpol.2007.12.015. Epub 2008 Jan 28.

Organochlorine pesticides in surface sediments and suspended particulate matters from the Yangtze estuary, China.

Author information

1
Department of Geography, Key Laboratory of Geographical Information Sciences of the State Ministry of Education, East China Normal University, Shanghai 200062, PR China. mliu@geo.ecnu.edu.cn

Abstract

Total HCHs' and total DDTs' levels in surface sediments (SS) ranged from 0.5 to 17.5 ng g(-1) and from 0.9 to 33.1 ng g(-1), averaged 6.0 and 8.2 ng g(-1), respectively. Total HCHs' and total DDTs' levels in suspended particulate matters (SPM) varied from 6.2 to 14.8 ng g(-1) with a mean value of 12.3 ng g(-1) and were from 3.4 to 25.7 ng g(-1) with an average of 16.4 ng g(-1), respectively. Lindane is the main HCHs' source and continuing use in the Yangtze Delta areas of 'pure' gamma-HCH (lindane) rather than technical HCH (a mix of largely alpha- and some gamma-HCH). DDTs in SS are mainly accumulated in history. However, high DDT fractions in SPM are indicators of new input of typical dicofol type DDT from 2002 to 2004. It can be seen that most samples from the Yangtze estuary were in ranges where adverse biological effects are expected, either occasionally or frequently.

PMID:
18222021
DOI:
10.1016/j.envpol.2007.12.015
[Indexed for MEDLINE]

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