摘要
针对女儿河沿岸铁合金厂冶炼废渣的排放,上游多家个体钼矿的开采带来的污染的现实,采用原子吸收光谱法对底泥中的Cu、Pb、Cd、Cr、Ni、Zn进行测定分析,并运用不同方法和标准来评价女儿河底泥重金属的环境状况。无论以自然背景值、单因子污染指数还是内梅罗污染指数法对该河段各底泥样品重金属污染程度进行综合评价。底泥重金属都超过污染指标,污染程度为Zn>Cr>Ni>Cu>Pb>Ca。对表层底泥重金属及分布规律的研究表明,污染程度与铁合金厂废渣排放和矿区位置成正态分布,是主要重金属污染源。
Facing the fact that smelting and mining wastes discharged along Nuer River from the CITIC Jinzhou Ferroalloy Co. ,Ltd and the molybdenum mines upstream, a regional study was conducted to assess the current lev-els of Cu,Pb,Cd,Cr, Ni,and Zn in bottom mud of Nuer River, using Flame Atomic Absorption Spectroscopy （FAAS）. In addition, the Natural Background Value, the Single Factor Contaminant Index and the Nemerow Pollution Index were applied in the integrative assessment of the heavy metal species, mobility and levels in mud sam- pies. Finally, in each ways, the results showed that heavy metals from the bottom mud of Nuer River are all over the standard （Zn 〉 Cr 〉 Ni 〉 Cu 〉 Pb 〉 Ca）. Moreover, after the assessment, it is obvious that the distribution of pollution presented normal, high metal contents are found close to the factory and the molybdenum mines and so enhanced heavy metal pollutions are related to smelting and mining wastes dumps.
出处
《科学技术与工程》
2010年第12期2936-2938,共3页
Science Technology and Engineering
关键词
原子吸收光谱法
女儿河底泥
重金属
污染
评价
Flame Atomic Absorption Spectroscopy （FAAS） bottom mud of Nuer river heavy metal pollution assessment
