Norwegian Institute for Water Research (NIVA), Gaustadalléen 21, N-0349 Oslo, Norway.
Mar Pollut Bull. 2010 Oct;60(10):1856-61. doi: 10.1016/j.marpolbul.2010.06.048. Epub 2010 Aug 17.
The Sørfjord has a long history of agriculture and industry, and environmental monitoring has been conducted for decades, comprising analyses of contaminants in mussel, fish and sediments. DDT was used as an insecticide in orchards surrounding the fjord between World War II and 1970. Since the early 1990 s, elevated concentrations of DDT were found in mussels and fish. Unexpectedly, DDT-concentrations increased towards present day, despite the discontinuation of use. The highest concentrations in mussels (in 2006) corresponded to about two orders of magnitude higher than background. Analyses of sediment core sections also indicated increased input towards present day. Shifts in climatic parameters, as well as increased amounts of soil dissolved organic carbon following a decline in atmospheric sulphate deposition may have contributed to this phenomenon. We warrant the need for increased knowledge of the effects of alterations in variables acting regionally and globally on the disposition of contaminants in ecosystems.
索弗峡湾有着悠久的农业和工业历史，几十年来一直进行环境监测，包括对贻贝、鱼类和沉积物中污染物的分析。在第二次世界大战到 1970 年期间，滴滴涕曾被用作果园杀虫剂。自 20 世纪 90 年代初以来，贻贝和鱼类中的滴滴涕浓度升高。令人意外的是，尽管已经停止使用，但滴滴涕浓度仍在不断增加。2006 年贻贝类最高浓度比背景值高出约两个数量级。沉积物岩芯部分的分析也表明，滴滴涕的输入量在不断增加。气候参数的变化，以及大气硫酸盐沉降减少后土壤溶解有机碳含量的增加，可能是造成这种现象的原因。我们认为，需要更多地了解在区域和全球范围内起作用的各种变量变化对生态系统中污染物分布的影响。
