钢铁企业颗粒物沉降对土壤重金属影响的预测方法探讨

Study on Prediction Method for the Impact of Particle Deposition from Iron and Steel Plants on Soil Heavy Metal Pollution

大气沉降是土壤重金属重要来源。以A市某钢铁企业为例,讨论了用AERMOD模型预测大气沉降对土壤重金属影响方法的适用性。结果表明:用Pb、Cu、Cr、Zn4种金属的敏感点年沉降量预测土壤重金属的结果普遍偏低,4种金属的网格最大沉降量预测结果均较敏感点预测结果更接近实测结果。

Atmospheric deposition is an important source of heavy metals in soil.Taking an iron and steel plant in A city as an example,the applicability of the AERMOD model to predict the impact of atmospheric deposition on heavy metals in soil was discussed.The results show that the prediction results of heavy metals in soil based on the annual settlement of of Pb,Cu,Cr and Zn at the sensitive points are generally lower than the actual values,and the prediction results based on their maximum settlement in the grid are closer to the measured results.