以淮北矿区固废堆积区周边土壤为研究对象,采集不同开采年限矿区的矸石、煤泥和土壤样品,运用ICP-AES测定了Cr、Ni、Cu、Zn、Pb和As 6种微量元素的含量.研究了不同堆积区土壤中微量元素的分布规律,探讨了堆积时间和固废类型对土壤中微量元素富集的影响,并运用地积累指数法评价土壤环境质量.结果表明,矸石堆积区周边土壤中Pb和As元素含量较高,而煤泥堆积区更易富集Ni、Cu和Zn元素;矸石堆积区周边土壤中微量元素含量随距离和时间增长的变化规律表现出不同的特征;研究区土壤中只有Cu和Zn元素含量超出背景值;根据地积累指数评价结果可知,只有Zn元素属于无污染-轻度污染,研究区整体处于清洁水平.%Taking the peripheral soil around solid waste dumps in the Huaibei mining area as the subject investigated , collected waste , slime and soil samples from mine area with different mining years , through ICP-AES determined content of Cr , Ni, Cu, Zn, Pb and As 6 trace elements .Soil trace element distribution pattern in different dumps have been studied ;impacts from dumping time and solid waste type on soil trace element enrichment discussed;then using geo-accumulation index assessed soil environment quality .The re-sult has shown that in waste dump peripheral soil , Pb and As contents are higher , while Ni, Cu and Zn are easy to be enriched in slime dump areas .Waste dump peripheral soil trace element content variation pattern along with the increasing of distance and time can show up different characteristics .Only Cu and Zn contents in study area soil are beyond background level .According to the result from geo-accumulation index assessment , only element Zn belongs to no pollution or lightly polluted , as a whole , the study area is at cleanli-ness level.
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