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2001•Journal of Analytical Atomic SpectrometryRequires access

High precision lead isotope ratio measurements by multicollector-ICP-MS in variable matrices

Sara Ehrlich, Zeev Karpas, LINA BEN‐DOR, Ludwik Halicz

Open publisher page 36 citations

Abstract

It is well known that the use of thallium as an internal standard for high precision and high accuracy measurement of lead isotopic ratios can correct for mass discrimination and instrumental drift. The present work demonstrates that matrix effects can also be accounted for when a multicollector inductively coupled plasma mass spectrometer (MC-ICP-MS) is used. The precision (2σ) obtained for the 207Pb/206Pb and 208Pb/206Pb ratios was 30 and 40 ppm, respectively, even in samples with total dissolved solid (TDS) levels of up to 700 mg L−1.

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What this paper is about

It is well known that the use of thallium as an internal standard for high precision and high accuracy measurement of lead isotopic ratios can correct for mass discrimination and instrumental drift. The present work demonstrates that matrix effects can also be accounted for when a multicollector inductively coupled plasma mass spectrometer (MC-ICP-MS) is used. The precision (2σ) obtained for the 207Pb/206Pb and 208Pb/206Pb ratios was 30 and 40 ppm, respectively, even in samples with total dissolved solid (TDS) levels of up to 700 mg L−1.

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OpenAlex reports 36 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

It is well known that the use of thallium as an internal standard for high precision and high accuracy measurement of lead isotopic ratios can correct for mass discrimination and instrumental drift. The present work demonstrates that matrix effects can also be accounted for when a multicollector inductively coupled plasma mass spectrometer (MC-ICP-MS) is used. The precision (2σ) obtained for the 207Pb/206Pb and 208Pb/206Pb ratios was 30 and 40 ppm, respectively, even in samples with total dissolved solid (TDS) levels of up to 700 mg L−1.

Key concepts: Inductively coupled plasma mass spectrometry, Thallium, Isotope, Isotopic ratio, Chemistry, Mass spectrometry, Analytical Chemistry (journal), Matrix (chemical analysis)

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