| 典型矿区深层地下水重金属含量特征及健康风险评价——以皖北矿区为例 |
| |
| 关键词:coal mining area groundwater heavy metal health risk assessment |
| 基金项目:国家自然科学基金项目(编号: 41173106);安徽省高校省级自然科学研究重点项目(编号: KJ2013A249);安徽省高校省级自然科学研究一般项目(编号: KJ2013B291)、宿州学院安徽省煤矿勘探工程技术研究中心开放课题(编号: 2012YKF16);宿州学院优秀青年人才基金项目(编号: 2013XQRL05)和宿州学院创新团队建设计划(编号: 2013kytd01) |
|
| 摘要点击次数: 3432 |
| 全文下载次数: 4029 |
| 摘要: |
| Health Risk Assessment of Heavy Metals in Deep Groundwater from Different Aquifers of a Typical Coal Mining Area: A Case Study of a Coal Mining Area in Northern Anhui Province |
| Six heavy metals(Cd, Cr, Cu, Zn, Pb and Ni)in deep groundwater from four aquifers (unconsolidated formation, coal-bearing series, limestone water in Taiyuan Formation and Ordovician limestone water) were monitored in a coal mining area of northern Anhui Province, and their content characteristics and health risk assessment were analyzed. The research result shows that the content orders of heavy metals from the four aquifers were different from each other. In the whole study area, the order of heavy metals content is the same as that of the groundwater samples from limestone water in Taiyuan Formation aquifer, with the order being Ni＞Zn＞Pb＞Cu＞Cd＞Cr. A comparison with China’s quality standard for groundwater(GB/T14848—93 Ⅲ)shows that the concentrations of Cr, Cu and Zn are below GB/T14848—93 Ⅲ, while the concentrations of Cd, Pb and Ni in some groundwater samples exceed the standard values. The health risk of chemical carcinogens is around 10-6~10-4 a-1, and the value of Cr is higher than that of Cd in the four aquifers. The highest mean health risk(1.29×10-4 a-1) of Cr was observed in the aquifer of coal-bearing series, which has exceeded the maximum allowance levels recommended by USEPA(1×10-4 a-1), and it is the primary control target for environmental health risk management; the health risks of chemical non-carcinogens of four heavy metals (Cu, Zn, Pb, Ni)are around 10-11~10-8 a-1, and their health risk values remain within the acceptable range. The health risks of Pb and Ni are much higher, and should be taken seriously. The total health risks of four aquifers were found in order of coal-bearing series＞limestone water in Taiyuan Formation＞Ordovician limestone water＞unconsolidated formation; the first three have exceeded the maximum allowance levels recommended by ICRP(5×10-5 a-1), and the highest total health risk(1.46×10-4 a-1) was observed in the coal-bearing series aquifer, which has exceeded the maximum allowance levels recommended by USEPA(1×10-4 a-1). The study of content characteristics and health risk assessment of heavy metals in deep groundwater from coal mining areas can provide references for exploitation, utilization and protection of groundwater resources. |
| LIN Man-li,GUI He-rong,PENG Wei-hua,SUN Lin-hua,CHEN Song,LI Zhi-chun.2014.Health Risk Assessment of Heavy Metals in Deep Groundwater from Different Aquifers of a Typical Coal Mining Area: A Case Study of a Coal Mining Area in Northern Anhui Province[J].Acta Geoscientica Sinica,35(5):589-598. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
|
|