| Speciation analysis of metals （Tl, Cd and Pb） in Tl-containing pyrite and its cinder from Yunfu Mine, China, by ICP-MS with sequential extraction |
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| 作者单位： | WANG Chunlin(State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China;Graduate University of C);CHEN Yongheng,ZHANG Ping(School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China);PAN Jianyang(Hangzhou Environmental Monitoring Center Station, Hangzhou 310007, China);QI Jianying,LIU Juan,LI Xiangping,WANG Jin(State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China) |
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| 摘 要： |
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| 关 键 词： | 电感耦合等离子体质谱 连续提取 形态分析 黄铁矿 重金属 铊 镉 铅 |
| 收稿时间： | 17 March 2010 |
Speciation analysis of metals (Tl,Cd and Pb) in Tl-containing pyrite and its cinder from Yunfu Mine,China, by ICP-MS with sequential extraction |
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| Authors: | Chunlin Wang Yongheng Chen Jianyang Pan Ping Zhang Jianying Qi Juan Liu Xiangping Li Jin Wang |
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| Institution: | [1]State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China [2]School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China [3]Graduate University of Chinese Academy of Sciences, Beijing 100049, China [4]Hangzhou Environmental Monitoring Center Station, Hangzhou 310007, China |
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| Abstract: | The speciation of heavy metals such as thallium, cadmium and lead existing in pyrite and pyrite cinder was analyzed by ICP-MS
with a sequential extraction procedure. The distribution patterns of these metals including exchangeable, reducible, oxidizable
and residual fractions were obtained. Tl, Cd and Pb in pyrite and pyrite cinder samples from each extraction step were determined
by inductively coupled plasma mass spectrometry (ICP-MS). Under the optimized instrumental conditions, detection limits of
Tl, Cd and Pb in different matrices were within the range of 0.006–0.07 μg/L, and the relative standard deviations ranged
from 0.8% to 1.2%. The accuracy of Tl, Cd and Pb determination was checked by analyzing two certified reference materials.
The results demonstrate that trace Tl, Cd and Pb in the samples can be accurately determined. The sequential extraction results
revealed that the percent contents of Tl, Cd and Pb in exchangeable, reducible and oxidizable fractions in pyrite cinder are
different from those in pyrite and in pyrite cinder. Tl, Cd and Pb mostly are distributed in residual fraction. Therefore,
the mobility of metals in pyrite is higher than that in pyrite cinder. Although distributions of Tl, Cd and Pb in the non-residual
fraction are not dominant in pyrite cinder, the total concentrations of them could not be ignored. Consequently, attention
must be paid to the risk of potential pollution by pyrite cinder. |
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| Keywords: | speciation heavy metal sequential extraction pyrite pyrite cinder |
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