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New sequential separation procedure for Sr, Nd and Pb isotope ratio measurement in geological material using MC-ICP-MS and TIMS

DRS at CSIR-National Institute of Oceanography

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Title New sequential separation procedure for Sr, Nd and Pb isotope ratio measurement in geological material using MC-ICP-MS and TIMS
 
Creator Makishima, A.
Nath, B.N.
Nakamura, E.
 
Subject separation processes
neodymium isotopes
lead isotopes
strontium isotopes
mass spectroscopy
 
Description A new 3-step sequential separation chemistry for Sr, Nd and Pb from silicate samples, which is suitable for isotope analysis by MC-ICP-MS as well as TIMS, has been developed. The chemistry is designed to minimize the number of evaporation steps, enabling high throughput especially when MC-ICP-MS is employed. The sample solution in 0.5 mol l sup(-1) HNO sub(3) after digestion with HF-HClO sub(4), which is prepared for trace element analysis, can be directly used in the new chemistry. In the first column using Sr resin, Sr and Pb are collected. The recovered solution for Sr can be directly aspirated into MC-ICP-MS. The Pb solution is dried, re-dissolved, separated into two aliquots and measured by double spike MC-ICP-MS. Subsequently, LREEs are collected by the second column packed with cation exchange resin. Finally, Nd was purified from Sm using Ln resin in the third column. The recovered Nd solution can also be directly nebulized into MC-ICP-MS. The Sr and Nd isotope ratios for the standard material JB-3 (basalt) from the Geological Survey of Japan by MC-ICP-MS and TIMS were reported to verify the chemistry and mass spectrometry developed in this study.
 
Date 2008-07-22T06:59:25Z
2008-07-22T06:59:25Z
2008
 
Type Journal Article
 
Identifier Geochemical Journal, Vol.42; 237-246p.
http://drs.nio.org/drs/handle/2264/1311
 
Language en
 
Rights Copyright [2008]. It is tried to respect the rights of the copyright holders to the best of the knowledge. If it is brought to our notice that the rights are violated then the item would be withdrawn.
 
Publisher The Geochemical Society of Japan