干旱区生态环境知识资源中心(Arid): 长汀稀土矿废弃地土壤重金属污染特征及其评价

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	长汀稀土矿废弃地土壤重金属污染特征及其评价
其他题名	Analysis of the characteristics and the evaluation of heavy metal pollutions inthe deserted land-area left-over by the rare earth mining in Changting, Fujian
	王友生 1; 侯晓龙 1; 吴鹏飞 1; 汪攀 1; 陈奶莲 1; 张云鹏 1; 马祥庆 1; 岳辉 2; 彭绍云 3
来源期刊	安全与环境学报
ISSN	1009-6094
出版年	2014
卷号	14 期号:4 页码:259-262
中文摘要	为了解离子型稀土矿开采废弃地土壤重金属污染状况,以福建长汀稀土矿废弃地为研究对象,测定了3类废弃地及未开采对照区土壤的重金属质量比,采用地积累指数、内梅罗指数和潜在生态风险指数对其污染状况进行了评价。结果表明:长汀稀土矿废弃地不同功能区土壤重金属污染存在一定差异,其中Cd污染最严重,原地浸废弃地、取土场、废弃堆浸池的Cd质量比分别为福建省土壤背景值的141倍、97倍、69倍;4个采样区土壤Cd均达重度污染水平,Cr、Cu均未污染,Pb在取土场达轻度污染,Zn在废弃堆浸池达轻度污染;综合潜在生态风险指数达极重污染水平。
英文摘要	In hoping to identify the seriousness and consequence of the heavy metal pollution to the soil due to the rare earth mining, the paper took the wasteland area of rare earth mining in Changting County, Fujian, as the research target by taking five soil samples of 0-20 cm each in a quadrat from the three types of wasteland and unmined area separately, and then we have picked up ten quadrats as each sampling areas. And, later, trying to mix the five soil samples in the same quadrat evenly and then brought back 1 kg of the said soil sample into the lab. When the soil samples were let to dry up naturally, they were ground firstly into the thin powder and then filtered through by a nylon mesh sized of 0.149 mm. And, now, put the soil samples sized in 0.5 g into a polytetrafluoroethylene crucible and then cook them with the HNO_3 + HCl+ HClO_4 + HF, and, finally, measured and tested the contents of Zn, Cr, Cu, Pb, Cd via an atomic absorption spectrophotometer (TAS-990). Such tests should be done 3 times with each kind of the samples repeatedly. Then, we have made an evaluation of the contents of the 5 kinds of heavy metals in the said waste-land and un-mined areas in three assessment indexes, namely, the Nemerow pollution index, the geo-accumulation index and the potential eco-risk index. The results of our evaluation have shown that there exists significant difference among the heavy metal pollutions in different wasteland areas. For example, the heavy metal content rates of rare earth mines prove to be higher than the background value of the non-mined areas in the Province. With the Cd content rate beingmost serious as compared with those of other heavy metals, its content rate in the said wasteland, in the rented earth pits and in the waste ponds of heap-leaching mine area has been found 141 times, 97 times and 69 times as high as thoseof the background value in the whole province, respectively. The evaluation results gained by our testing and measuring show that the four sampling areas were free from the pollution of Cr and Cu, but heavily polluted by Cd.
中文关键词	环境工程学 ; 长汀 ; 稀土矿 ; 废弃地 ; 重金属 ; 污染评价
英文关键词	environmental engineering Changting rare earth mine wasteland heavy metals pollution evaluation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5241793
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230781
作者单位	1.福建农林大学林学院, 福州, 福建 350002, 中国; 2.福建省长汀县水土保持事业局, 长汀, 福建 366300, 中国; 3.长汀县水土保持站, 长汀, 福建 366300, 中国
推荐引用方式 GB/T 7714	王友生,侯晓龙,吴鹏飞,等. 长汀稀土矿废弃地土壤重金属污染特征及其评价[J],2014,14(4):259-262.
APA	王友生.,侯晓龙.,吴鹏飞.,汪攀.,陈奶莲.,...&彭绍云.(2014).长汀稀土矿废弃地土壤重金属污染特征及其评价.安全与环境学报,14(4),259-262.
MLA	王友生,et al."长汀稀土矿废弃地土壤重金属污染特征及其评价".安全与环境学报 14.4(2014):259-262.