Lead isotope ratios in lead-glazed ceramics determined by laser ablation multi-collector inductively coupled plasma mass spectrometry for discriminating purpose

Lead isotope ratios in lead-glazed ceramics determined by laser ablation multi-collector... Herein, the potential of laser ablation multi-collector inductively coupled plasma mass spectrometry (LA-MC-ICP-MS) for the determination of Pb isotopes of lead-glazed ceramics has been investigated. To obtain good precision and accuracy, thallium was adopted to correct mass bias during Pb isotope analyses. The average 206Pb/204Pb, 207Pb/204Pb, 208Pb/204Pb, 207Pb/206Pb, and 208Pb/206Pb ratios determined by LA-MC-ICP-MS were within 0.027% of that obtained by the solution nebulizer MC-ICP-MS (SN-MC-ICP-MS). The homogeneity of lead isotope distribution expressed as the 2RSD range was from 0.013% to 0.022% for 206,207,208Pb/204Pb and from 0.006% to 0.013% for 207,208Pb/206Pb. These values were 10 times lower than those obtained by LA-ICP-MS with a dynamic reaction cell (DRC) and sufficient to classify the lead-glazed ceramics into 6 groups in this study. On the other hand, accurate and precise lead isotopic compositions could be obtained by the LA-MC-ICP-MS technique after non-matrix-matched standard calibration. Additionally, two lead-glazed ceramics could potentially serve as quality control samples, or even external calibration standards, for in situ lead isotope analyses of ancient lead-glazed materials. The proposed method is a promising tool for the analysis of archaeological ceramics rich in Pb due to negligible (ng level) sample damage, high spatially resolved isotopic information, rapidity (approximately 10 min per sample), and non-matrix-matched calibration. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Analytical Methods Royal Society of Chemistry

Lead isotope ratios in lead-glazed ceramics determined by laser ablation multi-collector inductively coupled plasma mass spectrometry for discriminating purpose

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Publisher
The Royal Society of Chemistry
Copyright
This journal is © The Royal Society of Chemistry
ISSN
1759-9660
eISSN
1759-9679
D.O.I.
10.1039/c8ay00750k
Publisher site
See Article on Publisher Site

Abstract

Herein, the potential of laser ablation multi-collector inductively coupled plasma mass spectrometry (LA-MC-ICP-MS) for the determination of Pb isotopes of lead-glazed ceramics has been investigated. To obtain good precision and accuracy, thallium was adopted to correct mass bias during Pb isotope analyses. The average 206Pb/204Pb, 207Pb/204Pb, 208Pb/204Pb, 207Pb/206Pb, and 208Pb/206Pb ratios determined by LA-MC-ICP-MS were within 0.027% of that obtained by the solution nebulizer MC-ICP-MS (SN-MC-ICP-MS). The homogeneity of lead isotope distribution expressed as the 2RSD range was from 0.013% to 0.022% for 206,207,208Pb/204Pb and from 0.006% to 0.013% for 207,208Pb/206Pb. These values were 10 times lower than those obtained by LA-ICP-MS with a dynamic reaction cell (DRC) and sufficient to classify the lead-glazed ceramics into 6 groups in this study. On the other hand, accurate and precise lead isotopic compositions could be obtained by the LA-MC-ICP-MS technique after non-matrix-matched standard calibration. Additionally, two lead-glazed ceramics could potentially serve as quality control samples, or even external calibration standards, for in situ lead isotope analyses of ancient lead-glazed materials. The proposed method is a promising tool for the analysis of archaeological ceramics rich in Pb due to negligible (ng level) sample damage, high spatially resolved isotopic information, rapidity (approximately 10 min per sample), and non-matrix-matched calibration.

Journal

Analytical MethodsRoyal Society of Chemistry

Published: May 17, 2018

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