期刊
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
卷 23, 期 2, 页码 173-180出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/b703193a
关键词
-
We present a new multicollector inductively coupled plasma mass spectrometric (MC-ICP-MS) method for measuring isotopic ratios of U-234/U-238 and Th-230/(232) Th in volcanic rocks using the Thermo Fisher Neptune. Uranium isotope measurements using SRM U010 as bracketing standard produce agreement within several permil for NBL 112A, REMP- 18, as well as for equilibrium rock standards. We also demonstrate that uranium standards are not appropriate for correcting thorium isotopic measurements due to di. erences between U and Th in both mass bias and mass- dependent ion transmission. Use of the thorium synthetic standard, UCSC ThA, as a bracketing standard produces data that agree well with 'accepted values' for other synthetic Th isotope standards and equilibrium rock standards.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据