期刊
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
卷 208, 期 1-3, 页码 113-118出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S1387-3806(01)00385-2
关键词
zinc; isotopic abundance; atomic weight; mass spectrometry
Gravimetric synthetic mixtures prepared from highly enriched isotopes of zinc in the form of oxides of well defined purity were used to calibrate a thermal ionization mass spectrometer. Measurements on natural zinc samples yielded an absolute isotopic composition of 48.27 (21) at. % Zn-64, 27.98 (5) at. % Zn-66, 4.10 (1) at. % Zn-67, 19.02 (8) at. % Zn-68, and 0.63 (1) at. % Zn-70, and the atomic weight of zinc as 65.409 (6) both with an uncertainty given on the basis of 95% confidence limit. (C) 2001 Elsevier Science B.V.
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