High precision SIMS oxygen isotope analysis and the effect of sample topography
High precision SIMS oxygen isotope analysis and the effect of sample topography
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DOI：
10.1016/j.chemgeo.2009.02.012
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发表时间：
2009-06-30
期刊：
影响因子：
3.9
通讯作者：
Valley, John W.
中科院分区：
文献类型：
--
作者：
Kita, Noriko T.;Ushikubo, Takayuki;Valley, John W.
我们在威斯康星州大学使用IMS-1280开发了高度精确和准确的原位西姆斯稳定同位素分析方案，通过仔细调整仪器、稳定的电子设备和改进的样品制备、标准化和自动化分析方案。多收集法拉第杯（FC）氧二和氧三同位素分析常规地从10-15 μ m单点获得0.3份/千份（Δ O-18和Δ O-17，2SD）的点到点再现性。对于均匀样品的多次分析，准确性甚至更好。此外，
We have developed highly precise and accurate in situ SIMS stable isotope analytical protocols using the IMS-1280 at the University of Wisconsin, through careful tuning of the instrument, stable electronics, and improved protocols for sample preparation, standardization and automated analysis. Multicollection Faraday Cup (FC) oxygen two and three isotope analyses routinely achieve spot-to-spot reproducibility of 0.3 parts per thousand (delta O-18 and delta O-17, 2SD) from 10-15 mu m single spots. Accuracy can be even better for multiple analyses of a homogeneous sample. Furthermore, reproducibility at the