铜陵鸡冠山硫铁矿废矿堆积区的重金属分布与磁化率变化  

Distribution of Heavy Metals and Variation in Magnetic Susceptibility in Iron Sulfide Waste Ore Dump at Jiguanshan, Tongling

作　　者：左振鲁[1] 陈骏[1] 王汝成[1] 季峻峰[1] 裘丽雯[1] 

机构地区：[1]南京大学地球科学系成矿作用国家重点实验室表生地球化学所,江苏南京210093

出　　处：《岩石矿物学杂志》2001年第2期199-207,共9页Acta Petrologica et Mineralogica

摘　　要：应用ICP -AES、EMPA和矿物磁测 ,对铜陵市鸡冠山硫铁矿废矿堆积区的废矿及周围进行系统分析。发现不同堆放时间的废矿样品中重金属含量的变化规律不同 ,在堆放时间为 10年和 6年的剖面 (分别为XO、XM剖面 )呈现富集 -淋滤 -富集的变化模式 ,而在堆放时间 <3年的剖面 (XN剖面 )呈现富集 -淋滤的变化模式。结合重金属迁移的特性 ,证明重金属对周边的生态环境存在着潜在的危害性。同时还分析了风化程度不同的XO、XM、XN剖面样品中磁化率与重金属的关系 ,证实两者之间存在较好的相关性。磁化率是重金属含量变化的一个有效指数 ,它的研究为重金属污染研究提供了一个新的方法。Using ICP-AES, EMPA and mineral magnetic measurement, the authors systematically analysed the mine waste and the surrounding soil of iron sulfide waste ore dump at Jiguanshan, Tongling. The results show that variations in heavy metal contents differ in different samples. Two mining waste sections with abandonment time being ten years (Section XO) and six years (Section XM) respectively exhibit an enrichment-leaching-enrichment model, while the section with abandonment time of three years (Section XN) shows an enrichment-leaching model. Taking migration into account, it is demonstrated that the heavy metals have potential impact on eco-environment. Researches on the magnetic susceptibility were also carried out to evaluate its relationship with heavy metal enrichment .In fact, there exists a close relationship between them. It is therefore considered that magnetic susceptibility is an effective indicator for variation in heavy metal concentrations, and may serve as a new method for studying heavy metal pollution.

关 键 词：废矿堆 重金属污染 磁化率 硫铁矿床 ICP-AES 生态环境 堆放时间 

分 类 号：X753[环境科学与工程—环境工程]