【摘要】 本文采用BCR逐级提取的方法对新集矿井区和泉山化工区土壤中的重金属Co、Cr、Ni、Pb化学形态进行研究,探讨重金属元素的迁移的规律,对土壤的生物有效性进行评价。研究结果表明:虽然重金属主要存在于残余态中,但在Fe-Mn氧化态、还原态中的质量分数也很高,说明这些土壤受到煤炭开发利用导致的重金属污染,而且对生物是有一定可利用性。更多还原

【Abstract】 In the paper,chemical speciation of heavy metals(Co、Cr、Ni、Pb)in the soil of Xinji mining area and Quanshan chemical industry area are studied by the method of BCR sequential extraction,and migration regularity of heavy metal elements are discussed,and then bioavailability of soil is evaluated.The results show that heavy metals mainly exist in residual fraction,although have a high mass fraction in oxide-state and reduced-state of Fe-Mn,the soil have indeed polluted by the heavy metals cased by exploitation and utilization of coal,and it has some availability for biological.更多还原