High-throughput isotope analysis of sub-nanogram sized lead using MC-ICP-MS with on-line thallium doping technique and desolvating nebulizer system

نویسندگان

چکیده

A MC-ICP-MS technique for precise isotope analysis of sub-nanogram sized Pb sample was developed. We found that combined uses real-time on-line Tl doping, Tl-isotope-based mass discrimination correction, and desolvating nebulizer operated at relatively low temperature give the best analytical results. The 2SD reproducibility analyses with 0.4 ng better than ±0.0032 206Pb/204Pb 207Pb/204Pb, ±0.0069 208Pb/204Pb, which were about 2-3 times those obtained by standard bracketing without normalization. Our method also enables rapid determination ratios, 10-13 min per sample, is 3 quicker using an auto-sampler.

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ژورنال

عنوان ژورنال: Geochemical Journal

سال: 2021

ISSN: ['0016-7002', '1880-5973']

DOI: https://doi.org/10.2343/geochemj.2.0612