中国长江口表层沉积物和悬浮颗粒物中的有机氯农药
Organochlorine pesticides in surface sediments and suspended particulate matters from the Yangtze estuary, China.
作者信息
Liu Min, Cheng Shubo, Ou Dongni, Yang Yi, Liu Hualin, Hou Lijun, Gao Lei, Xu Shiyuan
机构信息
Department of Geography, Key Laboratory of Geographical Information Sciences of the State Ministry of Education, East China Normal University, Shanghai 200062, PR China.
出版信息
Environ Pollut. 2008 Nov;156(1):168-73. doi: 10.1016/j.envpol.2007.12.015. Epub 2008 Jan 28.
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.
表层沉积物（SS）中六氯环己烷总量和滴滴涕总量的水平范围为0.5至17.5纳克/克和0.9至33.1纳克/克，平均分别为6.0和8.2纳克/克。悬浮颗粒物（SPM）中六氯环己烷总量和滴滴涕总量的水平分别在6.2至14.8纳克/克之间，平均值为12.3纳克/克，以及在3.4至25.7纳克/克之间，平均为16.4纳克/克。林丹是六氯环己烷的主要来源，长江三角洲地区持续使用的是“纯”γ-六氯环己烷（林丹）而非工业用六氯环己烷（主要是α-六氯环己烷和部分γ-六氯环己烷的混合物）。表层沉积物中的滴滴涕主要是历史累积。然而，悬浮颗粒物中高比例的滴滴涕表明2002年至2004年有典型三氯杀螨醇型滴滴涕的新输入。可以看出，长江河口的大多数样本处于预计会偶尔或频繁产生不利生物效应的范围内。
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