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Author Walder, Andrew J. ♦ Furuta, Naoki
Source J-STAGE
Content type Text
Publisher The Japan Society for Analytical Chemistry
Language English
Subject Keyword Inductively coupled plasma mass spectrometry ♦ magnetic sector mass spectrometry ♦ lead isotope ratio measurement ♦ thallium based mass bias correction
Abstract An inductively coupled plasma (ICP) ion source coupled to a magnetic sector mass analyser equipped with seven Faraday detectors has been used to measure the lead isotope ratios in solutions of Sanshiro Pond sediment collected at the University of Tokyo, airborne particulates collected at Shinjuku in Tokyo and Merck multielement standard product number 97279494. A thallium correction technique was utilised to allow a simultaneous correction for mass bias. This work followed an earlier interlaboratory comparison study of the above-mentioned solutions using ICP quadrupole mass spectrometry, and has demonstrated a considerable improvement in analytical precision. The following isotope ratio measurements were recorded. Pond sediment solution containing 82ng $ml^{-1}$ lead: $^{206}Pb/^{204}Pb=17.762±0.014;$ $^{206}Pb/$ $^{207}Pb=1.1424±0.0009;$ $^{208}Pb/^{204}Pb=37.678±0.034.$ Airborne particulate solution containing 45 ng $ml^{-1}$ lead: $^{206}Pb/$ $^{204}Pb=17.969±0.006;$ $^{206}Pb/^{207}Pb=1.1528±0.0003;$ $^{208}Pb/^{204}Pb=37.915±0.021.$ Merck multielement standard solution containing 100ng $ml^{-1}$ lead: $^{206}Pb/^{204}Pb=19.255±0.015;$ $^{206}Pb/^{207}Pb=1.2238±0.0004;$ $^{208}Pb/^{204}Pb=38.476±0.021$ (All errors are given as ±2 standard deviations).
ISSN 09106340
Learning Resource Type Article
Publisher Date 1993-10-10
e-ISSN 13482246
Journal Analytical Sciences(analsci1985)
Volume Number 9
Issue Number 5
Page Count 6
Starting Page 675
Ending Page 680


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