乌江下游沿河到彭水段汞含量调查

An Investigating Study on Mercury Content of The River Section from Yanhe to Pengshui,Lower Reaches of Wujiang River

本文对乌江下游沿河到彭水段河水、底质、鱼肉、岸坡土壤和木本植物叶片中汞的含量分布情况作了较全面的调查．结果表明乌江下游沿河至彭水段河水汞含量为０．０３６～０．０ｕｇ／ｌ，底质汞含量为１３１～３５９ｕｇ／ｋｇ，鱼肉汞含量为１０．５～１７５．６ｕｇ／ｋｇ，岸坡土壤汞含量为５３．０～２９０４ｕｇ／ｋｇ，岸坡木本植物叶片汞含量为１８．７～９３．５ｕｇ／ｋｇ，汞含量序为：岸坡土壤＞底质＞鱼肉＞岸坡木本植物叶＞河水。

In this study, the mercury content and its distribution in river water, wediment,fish,bank Soil and leaves of woody plants on the lower reaches of Wujiang River from Yanhe to Pengshui setion were investigated comprehensively. The results show themercury content in river water is about 0. 036～0. 05ug/l,in fish meat 10.5～175ug/kg,in sediment 131～359ug/kg,in soil of riverbank 53.0～2904ug/kg and in leaves of woedy plants 18.7～93. 5ug/kg. The sequence of these mercury contents is:Soil of River bank>Sediment > Fish Meat > Leaves of Woody plants>River Water.