粉煤灰中镉,铬,铅,砷,汞对土壤及作物影响的初步评价

采用污染指数法和污染起始值法，对贵阳发电厂的粉煤灰及其土灰混合种植的农作物中的有害元素镉，铬，铅，砷，汞含量进行分析，结果表明：粉煤灰不会对土壤和种植的玉米，水稻，茄子，辣椒，白菜，马铃薯，红薯造成污染。而仅在小麦，油菜籽，蚕豆中铬含量超过污染起始值，污染指数大于１，不能食用。

Evaluation of the Effect of Cd, Cr, Pb, As and Hg in Coal Ash on Soil and Crops

By means of pollution initial values and pollation indexes, analyse coal ash from thermal power plant of Guiyang and ealtivated erops on mita of coal ash into soil for Cd, Cr, Pb, As and Hg elements contents. The results showed that had no give rise to pollation in soil, as is also in cultivated erops, such as maize, race, eggplant, green pepper, chinese cabbage, potato and sweet potato etc. But Cr clement content excced pollution initial vallues, pollution indexes >1 only in crops, such as wheat, rape and broad bean etc.