地质样品中Pb同位素分析的高效酸淋洗流程

张锦丽; 袁洪林; 高山; 宗春蕾; 戴梦宁; 柯霖; 贾先巧

Volume 33 Issue 1

Jan. 2008

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Article Navigation > Earth Science > 2008 > 33(1): 46-56

ZHANG Jin-li, YUAN Hong-lin, GAO Shan, ZONG Chun-lei, DAI Meng-ning, KE Lin, JIA Xian-qiao, 2008. Efficient Acid Leaching of Geological Samples for Lead Isotope Analysis. Earth Science, 33(1): 46-56.

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ZHANG Jin-li, YUAN Hong-lin, GAO Shan, ZONG Chun-lei, DAI Meng-ning, KE Lin, JIA Xian-qiao, 2008. Efficient Acid Leaching of Geological Samples for Lead Isotope Analysis. Earth Science, 33(1): 46-56.

ZHANG Jin-li, YUAN Hong-lin, GAO Shan, ZONG Chun-lei, DAI Meng-ning, KE Lin, JIA Xian-qiao, 2008. Efficient Acid Leaching of Geological Samples for Lead Isotope Analysis. Earth Science, 33(1): 46-56.

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Efficient Acid Leaching of Geological Samples for Lead Isotope Analysis

ZHANG Jin-li^{1, 2
,},
YUAN Hong-lin^{2, 3},
GAO Shan^{1, 2, 3},
ZONG Chun-lei²,
DAI Meng-ning²,
KE Lin¹,
JIA Xian-qiao¹

1.
Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China
2.
State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi'an 710069, China
3.
State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China

Received Date: 2007-06-28
Publish Date: 2008-02-25

Abstract

Abstract

We present a simplified acid leaching method for lead isotope analysis of geological samples using multiple-collector inductively-coupled-plasma mass-spectrometry (MC-ICP-MS), to remove any contamination during sample preparation. The method is featured with higher throughput, and lower lead background using one step of weak hydrochloric acid leaching. Lead isotopic compositions of five United States Geological Survey (USGS) reference materials (AGV-1, AGV-2, BHVO-2, BCR-2, and G-2) were measured. The results show that both generations of USGS standards were contaminated during sample preparation. The grinding procedure and crushing environment were the dominating sources of contamination for the first and the second generations, respectively. The homogeneous lead isotopic compositions of these standards demonstrate that the one-step weak acid leaching is efficient and necessary for obtaining reliable lead isotope compositions in geological samples.
- lead isotope,
- leaching,
- USGS reference material,
- multiple collector ICP-MS

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References(66)

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