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中文摘要：
选择新疆准东煤田五彩湾露天煤矿为研究区,通过测定研究区内8个采样点（点1为背景点）大气降尘中Hg元素的含量,利用地质累积指数法及Hakanson潜在生态危害指数法对研究区内的大气降尘进行重金属汞污染等级和潜在生态风险等级评价,结果表明：1与背景点相比,位于煤矿区上风向的采样点基本不受煤矿区开采过程中Hg的影响,下风向的采样点均受到煤矿区开采过程中Hg的影响,总体来看,研究区内大气降尘已受到Hg的污染;2研究区所有大气采样点均存在不同程度的Hg的潜在生态风险,其中,大气降尘中Hg含量相对较高的点8和点9的潜在生态风险等级为强,风险所占比率为25%。说明受矿区煤矿开采影响,Hg的潜在生态风险在下风向显著增强。
英文摘要：
Wucaiwan opencast coal mine in Zhundong coalfield in Xinjiang was chosen as the study area. Pollution levels and potential ecological risk levels of heavy metals mercury pollution in atmospheric dust were evaluated by geological cumulative index method and Hakanson potential ecological harm index method,through the determination of Hg content in eight atmospheric dust sampling points where point one was the background point. Results showed that compared with background points,Hg concentrations of sampling points of the upper wind direction were not affected by the process of mining,while Hg concentrations of sampling points of lower wind direction were affected by the process of mining,indicating the atmospheric dust in the study area was contaminated by Hg. All atmospheric sampling points of the study area had different levels of the potential ecological risk of Hg,in which the Hg concentrations in atmospheric dust of sampling point eight and nine were relatively high,and the potential ecological risk level was strong,with risk proportion 25%. The potential ecological risk of Hg of lower wind direction markedly increased with the influence of the process of mining.
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