摘要
通过对粤西云浮含铊硫化物矿渣堆放场及周边土壤剖面的铊、铅元素含量和铅同位素组成特征的研究,试图示踪土壤中原存的铊和人为影响的铊的分布状况。土壤样品采于露天的含铊硫化物工业堆渣场和一个邻近的背景土壤剖面。结果表明来自于废渣的土壤铊污染是有限的,废渣的铊主要聚集在0～16.5cm的土壤上部且不同采样点数据变化较大,随着深度增加铊污染程度降低。由于铊和铅具有相似的地球化学行为,可以采用铅同位素示踪方法研究铊在土壤中的迁移过程。
The contents of thallium （T1） and lead （Pb） as well as Pb isotopic composition were analyzed to trace the distribution of natural and anthropogenie TI in soil of an industrial pyrite slag disposing area from the Yunfu pyrite mine in western Gnangdong Province. Soil samples were collected from a soil profile adjacent to a large open disposal pile of industrial Tl-rich pyrite slag and from a similar profile in the background area. The results show that T1 contamination of the soil derived from slag is generally limited and slag-T1 is mainly accumulated in the upper part （0 -16.5 cm） of the vicinal soil of the slag pile and shows considerable variation in concentration between different sampling sites. As for the concentration of total T1, it seems that the deeper soil of the studied profiles has not been contaminated. Due to the similar geochemical behaviors between T1 and Pb, it is effective to use the lead isotope tracing method to trace the process of T1 in the soil around the pyrite mine.
出处
《地球学报》
EI
CAS
CSCD
北大核心
2008年第6期765-768,共4页
Acta Geoscientica Sinica
基金
国家基金委-广东省自然科学联合基金重点项目(编号:U0633001)
教育部“新世纪优秀人才支持计划”(2007)(编号:NCET-07-0219)
广东省科技计划项目(编号:2004B33301021)
广州市科技计划项目(编号:2006J1-C0061)
广州市属高校科技计划重点项目(编号:2034)联合资助
关键词
铊
铅同位素
云浮硫铁矿
thallium
lead isotope
soil
Yunfu pyrite mine
