Strategies for isotope ratio measurements with a double focusing sector field ICP-MS

Authors
Hamester, M Wiederin, D Wills, J Kerl, W Douthitt, CB
Citation
M. Hamester et al., Strategies for isotope ratio measurements with a double focusing sector field ICP-MS, FRESEN J AN, 364(5), 1999, pp. 495-497
Citations number
15
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY
ISSN journal
09370633 → ACNP
Volume
364
Issue
5
Year of publication
1999
Pages
495 - 497
Database
ISI
SICI code
0937-0633(199907)364:5<495:SFIRMW>2.0.ZU;2-8
Abstract
A single collector double focusing sector field ICP-MS is evaluated for the determination of isotope ratios. Spectral interferences (e.g. (ArNa)-Ar-40 -Na-23 on Cu-63) can lead to calculation of inaccurate ratios. The use of h igh resolution enables such interferences to be separated from the isotopes of interest. External reproducibilities of < 0.02% are shown for uninterfe red isotopes (measured at low resolution R = 300) and < 0.1% for interfered isotopes which required the use of medium (R = 4000) and high resolution ( R = 10000).