Geoscience reports of Shimane University

島根大学総合理工学部地球資源環境学教室

ISSN:1343-9774

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Use this link to cite this item : https://ir.lib.shimane-u.ac.jp/6122

Geoscience reports of Shimane University 22

2003-12-27 発行

Lead isotope analysis using TIMS following single column-single bead Pb separation

Kimura, Junichi

Kawahara, Misaki

Iizumi, Shigeru

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This study examines separation of lead from igneous rock samples for Pb isotope ratio analysis，using a two-step single column-single bead separation technique．The separates were then analyzed by thermal ionization mass spectrometry（TIMS）．The purification of lead achieved by the technique resulted in high Pb ionization efficiency in the TIMS analysis．Loading of the Pb separates and a normal silica-gel absorber on to single Ta filaments yielded signals that were stable for over 30 minutes．Analyses of six igneous rock standard samples produced by the Geological Survey of Japan agreed well with their published Pb isotope ratios．The single bead separation step is a versatile technique for purification of lead
contained in materials with complex matrices．

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NCID

AA11455176

c006022011.pdf 797 KB

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