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KMID : 0385520200330060245
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Analytical Science & Technology
2020 Volume.33 No. 6 p.245 ~ p.251
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Lead isotope measurement of geological reference materials using thermal ionization mass spectrometry
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Lee Hyo-Min
Jo Hui-Je
Kim Tae-Hoon
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Abstract
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Lead (Pb) has been shown to be a useful tracer of contamination sources and geochemical processes such as age dating and crustal evolution. These studies require a chromatographic technique for Pb separation from geological samples. This paper presents a comparison study on the effect of eluent concentration between 6M HCl and 8M HCl on the separation of Pb from Pb resin. The results showed that the separation of Pb using 6M HCl as the eluent was not effective compared to the separation using 8M HCl. To verify this method, we measured the Pb isotopic compositions of the Pb isotopic standard (NIST NBS981) and geological reference materials (BCR-2, GSP-2, and JG-1a) using a thermal ionization mass spectrometer (TIMS). The results correspond well with the reported values within the error range, implying that this method can be useful.
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KEYWORD
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Pb isotope, TIMS, Pb separation, geological reference material
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