淮北矿区塌陷湖水体中锑分布和环境评价分析

锑是一种广泛分布的有毒微量重金属,对人体具有慢性毒性和潜在的致癌性.以淮北矿区3个煤矿的塌陷湖水体为研究对象,采用原子荧光光谱(HGAFS)法对塌陷湖上覆水体20 cm、50 cm、80 cm不同深度、不同时期水样及背景水体中锑进行了测试.结果表明:不同塌陷湖水体中锑浓度水平分布差异明显,与塌陷湖形成时间、矸石堆距离等因素有关,同一塌陷湖中锑浓度垂向分布从表层向深层缓慢增加.基于单因子污染指数法,根据地表水环境质量标准对塌陷湖水体锑污染进行了环境评价分析,为水体综合利用提供了参考论据.

Analysis of distribution and environmental assessment of antimony in collapse lake waters of Huaibei mining areas

Antimony is a hazardous trace heavy metal with wide distributions.It is chronically toxic and potentially carcinogenic to the human body.Water samples were collected from the collapse lakes of three mines and a background water body in Huaibei mining areas in different periods,and at depths of 20 cm,50 cm and 80 cm.The samples were determined by hydride generation atomic fluorescence spectrometry(HGAFS).The results show that the concentration distributions of antimony are significantly different in diverse water bodies of collapse lakes,which might be related to such factors as length of collapse time and distance to the gangue pile.The vertical distribution of antimony concentrations in the same collapse lake is characterized by slowly increased concentration from the surface to the deep.Based on the single-factor contaminant index and the environmental quality standards for surface water,an environmental assessment of antimony contamination in the collapse lakes was conducted to provide references for the comprehensive utilization of water.