山东省南四湖水产品中铅、镉、砷、汞污染状况的调查与分析

目的调查南四湖水产品中铅、镉、砷、汞的污染,分析南四湖的污染状况。方法对南四湖7种主要经济鱼类及鸭、螺、藕、菱角等湖产品共2 5 0份进行铅、镉、砷、汞含量的检测;其中鱼、鸭以池养鱼、家鸭作为对照。结果铅、镉、汞含量均高于对照组,最高超出国家标准1 3.2倍;而砷只在鲫鱼、鳊鱼、鲂鱼中的含量高于对照组。结论通过对南四湖湖水及湖产品污染4种元素的检测分析表明,湖区受周围工业污染严重,应进一步加强综合治理。

Investigation and evaluation of lead, cadmium, arsenic, mercury in aquatic products of Nansihu

Objective To investigate the pollution of aquatic products by Pb,Cd,As,Hg and evaluate the pollutioncondition of Nansihu.Methods The contents of Pb,Cd,As,Hg in 250 samples took from seven species of majoreconomic fish,duck,spiral shell,lotus root and water chestnut were determined.The pond fish and domesticatedduck were taken as control.Results The contents of Pb,Cd,Hg were higher than control.The highest was 13.2times of national standard.The content of As only in crucian caro,bream and triangular bream was higher thancontrol.Conclusion Nansihu region is seriously affected by industrial pollution.Comprehensive managementshould be further strengthened.