Determination of lead isotope ratios by inductively coupled plasma-mass spectrometry (ICP-MS)

An inductively coupled plasma-mass spectrometer (ICP-MS) was used to measure isotope ratios of lead and thallium. Significant variations in the measured ratios were found as a function of varying (B) lens settings and sample flow rates. No significant effect with changing analyte concentration was o...

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Bibliographic Details
Published in:Spectrochimica acta. Part B: Atomic spectroscopy 1987, Vol.42 (1), p.39-48
Main Authors: Longerich, H.P., Fryer, B.J., Strong, D.F.
Format: Article
Language:English
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Summary:An inductively coupled plasma-mass spectrometer (ICP-MS) was used to measure isotope ratios of lead and thallium. Significant variations in the measured ratios were found as a function of varying (B) lens settings and sample flow rates. No significant effect with changing analyte concentration was observed. The use of thallium as an internal isotope ratio standard is introduced. Poisson counting statistics is shown to be a minor component in the measured error in ratios at high analyte concentrations.
ISSN:0584-8547
1873-3565
DOI:10.1016/0584-8547(87)80048-4