Study Of The Sources And Affecting Factors Of Heavy Metal Pollution In Soil-water Interfaces Of Sb In Antimony Area

The content of heavy metal in the environment is rich, and the distribution is complex. Under the action of a series of physical, chemical and biological complex reaction, the resulting consequences of heavy metal pollution is quite serious.Heavy metal pollution and soil- water interface flow is one kind of special form of expression,it is heavy metal contamination of soil by rainfall or snowmelt runoff under the joint action of compound pollution produced fluid.The development of mineral resources for production and living, and economic development to provide the necessary energy, raw materials, etc.With excessive mining,the mining process of harmful substance in particular soil, air and water pollution caused by heavy metals can cause serious damage to the local ecological environment,the problem of environment pollution becomes worse and worse.Based on antimony ore district treasure daxing mining area as the study area, with principal component analysis(PCA) as the basic method, through field visits, sampling, laboratory experiments, simulation research in the study area, analysis of the soil heavy metal pollution- water interface flow in the study area the main pollution source, and preliminarily determines the main influence factors.In this paper, the main research results are as follows:⑴Through the study of the field visits, group members collected more than 300 local soil samples, the method of using flame atomic absorption determination of six kinds of heavy metal element content.After statistical analysis on all the experimental data, the results show that the study area in the soil heavy metal pollution- water interface flow generally high heavy metal content, and the heavy metal elements have greater mobility, making pollution is quite serious, the situation is not optimistic.⑵Using principal component analysis method to analyze the experimental data,extract three principal components.The first principal component only element SB,explaining 33.370% of total variance variables;The second principal components including zinc, Ni, Pb, Cd, four elements, the variables explained variance of31.410%;Only Cu element, in the third principal component variables explained variance of 17.180%.⑶Put the 3 principal component extraction combined with the comprehensive analysis on functional partition of study area, have the following findings: in the mineral exploration area or the corresponding product smelting, processing factory and backfilling dam periphery, the several kinds of heavy metals pollution is extremely serious, thus we can conclude the ore mining and corresponding products produced in the process of processing and smelting slag and waste water discharge is the main source of this kind of heavy metals pollution;In the station or position is an important transport hub, the content of heavy metal Pb is relatively high, so we can determine the transportation and the burning of fossil fuels is an important source of heavy metal Pb pollution;And heavy metals in farmland, forest land the position such as Cu content is relatively high, so we concluded that pesticide use is an important source of heavy metal pollution of Cu.