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

Sara Ehrlich; Zeev Karpas; Lina Ben-Dor; Ludwik Halicz

doi:10.1039/B102454J

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Sara Ehrlich,^a Zeev Karpas,^b Lina Ben-Dor^c and Ludwik Halicz*^a

Author affiliations

* Corresponding authors

^a Geological Survey of Israel, 30 Malkhey Israel Street, Jerusalem, Israel
E-mail: ludwik@mail.gsi.gov.il

^b Nuclear Research Center, P.O. Box 9001, Negev, Beer-Sheva, Israel

^c Department of Inorganic and Analytical Chemistry, Hebrew University, Jerusalem, Israel

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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Article information

DOI: https://doi.org/10.1039/B102454J
Article type: Technical Note
Submitted: 15 Mar 2001
Accepted: 03 May 2001
First published: 21 Jun 2001

Download Citation

J. Anal. At. Spectrom., 2001,16, 975-977

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