Pb-207/Pb-206 determination of zircons by laser probe-inductively coupled plasma mass spectrometry

Citation
X. Yan et al., Pb-207/Pb-206 determination of zircons by laser probe-inductively coupled plasma mass spectrometry, CHIN SCI B, 43(23), 1998, pp. 2008-2012
Citations number
4
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Multidisciplinary
Journal title
CHINESE SCIENCE BULLETIN
ISSN journal
1001-6538 → ACNP
Volume
43
Issue
23
Year of publication
1998
Pages
2008 - 2012
Database
ISI
SICI code
1001-6538(199812)43:23<2008:PDOZBL>2.0.ZU;2-E
Abstract
Laser probe-inductively coupled plasma mass spectrometry (LP-ICP-MS) was us ed to determine Pb-207/Pb-206 ratios in single zircon grains. A Nd: YAG las er operating at 1 064 nm and a Fisons-VG PQII Turbo ICP-MS were employed. F or the known zircons, the Pb-207/Pb-206 results of LP-ICP-MS are: close to the thermal ionization mass spectrometry (TIMS) results. The spatial resolu tion of this method is 40-50 mu m and the sensitivities for lead isotopes a re about 300-400 ops/ppm. The precision of Pb-207/Pb-206 ratio is 0.3%-4% a nd depends on the lead concentration of the sampling pits. LP-ICP-MS provid es a simple, rapid and economic method for zircon Pb-207/Pb-206 determinati on.