淮南市新集一矿采煤沉陷水域重金属元素污染调查评价

The investigation of heavy metals in Huainan city Xinji1 coal mining subsidence water area

伴随着煤矿企业供给侧改革日益深入,煤矿企业从单一煤炭开采获得经济效益,逐渐转变为对采煤沉陷水域生态环境治理发展生态旅游产业,因此采煤沉陷水域重金属元素现状调查与评价工作将是未来发展的重要方向。选择淮南市新集一矿采煤沉陷水域为研究对象,结合实地现场踏勘,挑选出具有代表性四个沉陷水域(A、B、C和D)进行水样品系统采集。按照地表水国家检测标准,测定出28个水样品中六种重金属元素(铜(Cu)、锌(Zn)、镍(Ni)、镉(Cd)、铬(Cr)和铅(Pb))丰度值。研究成果表明:(1)A区六种重金属污染程度最严重,其次是B区,D、C区则相对较轻;(2)与周边张集煤矿采煤沉陷水域重金属元素丰度值相比,本次研究区重金属元素显著富集;(3)采用单因子指数法计算表明Cd、Cr和Pb元素属于新集一矿采煤沉陷水域潜在危险重金属元素,应引起高度重视,需着重治理。

with the deepening of the reform of coal mining enterprises to the supply side, coal miningenterprises obtain economic benefits from a single source gradually to the development of ecological tourismrelative to the ecological environment control of coal mining subsidence water area. Therefore, the investigationof heavy metals in coal mining subsidence waters will be an important direction for future development. Thispaper selects the Huainan city Xinji1 coal mining subsidence water area as the research object, based on fieldinvestigation, four representative subsidence waters （A, B, C and D） were determined to collect water samplesSix kinds of heavy metal elements （Cu, Zn, Ni, Cd, Cr and Pb）in 28 water samples were determined by thenational standard of surface water. Research results show that： （1） the most serious pollution area of six kinds oheavy metal is A, followed by B, D, C area is relatively light; （2） compared with the heavy metals in abundancenearby Zhangji coal mining subsidence water area, the values of these elements in the this study issignificantly enriched; （3） the results of single factor index shows that Cd, Cr and Pb elements belong to thepotential hazardous heavy metal elements in the coal mining subsidence water area, which should attach greaimportance to govern.