安徽省主要土壤重金属污染评价及其评价方法研究

Evaluation and Methods of Heavy Metal Pollution in Main Soils of Anhui Province

综合考虑土壤重金属污染程度的渐变性和模糊性以及各重金属不同的生物毒性水平,对常规加权平均模糊数学模型中的权重算法进行了重新修正,引入Hakanson制定的标准重金属毒性响应系数,提出一种分值权重模糊数学综合评价模型。以安徽省三种主要土壤为研究对象进行了评价尝试,并对两种评价方法的异同进行了相应分析。

In the new approach for evaluating soil heavy metal pollution, the graduation feature and fuzzy feature, together with the biological toxicology, were comprehensively considered. Then the method for calculating weighted average in the regular fuzzy mathematics model for soil heavy metal evaluation was ameliorated. A new fuzzy mathematics model was put forward by introducing the standard toxic response factor formulated by Hakanson. Finally, soil heavy metals pollution in main soil in Anhui Province was assessed by using both the new and the regular methods.