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- Title
地质样品中铬的化学分离及双稀释剂法 铬同位素测定 .
- Authors
马健雄; 李 津; 陈岳龙; 朱祥坤
- Abstract
A method for high-precision isotope measurement of Cr isotope compositions using multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS) was developed. The chromium has 3 elution peaks in the purification process, implying that there exist at least 3 kinds of complex in HCl solution. The Al and Ti have a risk of overloading but no effect on the precision of Cr isotope composition in shale samples. The composition of 50Cr-54Cr double spike is determined by NIST SRM 979, 50Cr/52Cr=41.66, 54Cr/52Cr=22.28. The δ53Cr of NIST 3112a is –0.063±0.05‰ (2SD, N=22). The Cr isotope composition of basalt, dunite and peridotite geological reference is in agreement with the published data.
- Publication
Acta Geoscientica Sinica, 2020, Vol 41, Issue 5, p630
- ISSN
1006-3021
- Publication type
Article
- DOI
10.3975/cagsb.2020.071404