极地研究2011，Vol.23Issue(4)：328-337,10.DOI:10.3724/SP.J.1084.2011.00328
陨石Cr同位素组成测试技术及其在天体化学研究中的应用
ANALYTICAL METHODS FOR Cr ISOTOPES AND THEIR APPLICATIONS IN COSMOCHEMISTRY
摘要
Abstract
Chromium isotope compositions have been widely applied in cosmochemistry and are a record of the early evolution of the Solar System. The major methods employed to measure Cr isotopic compositions are SIMS, TIMS and MC-ICPMS. This paper reviews the characteristics and development of these analysis techniques. With development of analytic techniques, the current analytical precisions for e(53Cr) and ε(54Cr) are 6 and 12 ppm (2 σ) , respectively. The subtle variation in Cr isotopic compositions in extraterrestrial materials can be determined by highly precise measurement of Cr isotopes. This advantage provides a new way to further clarify and evaluate the origin and distribution of 53Cr and 54Cr in the Solar System.关键词
Cr测定技术/同位素异常/陨石/天体化学/应用Key words
Cr isotopic anomaly, analytical method, meteorites, cosmochemistry, application引用本文复制引用
王桂琴,王道德,杨晶..陨石Cr同位素组成测试技术及其在天体化学研究中的应用[J].极地研究,2011,23(4):328-337,10.基金项目
中国科学院知识创新工程重要方向项目(KZCX2-YW-Q08)、中国科学院知识创新工程领域前沿项目(GIGCX-09-0301)、国家自然科学基金项目(40873054)和国际极地年中国行动计划项目资助 （KZCX2-YW-Q08）
