Advances in Earth Science ›› 2006, Vol. 21 ›› Issue (10): 1014-1024. doi: 10.11867/j.issn.1001-8166.2006.10.1014

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Progress of Measuring Method and Its Application for Re-Os Isotopic System

Yang Hongmei 1,2,Ling Wenli 1   

  1. 1.Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074,China;2.Yichang Institute of Geology and Mineral Resources, China Geological Survey, Yichang 443003,China
  • Received:2006-04-04 Revised:2006-08-10 Online:2006-10-15 Published:2006-10-15

Yang Hongmei,Ling Wenli. Progress of Measuring Method and Its Application for Re-Os Isotopic System[J]. Advances in Earth Science, 2006, 21(10): 1014-1024.

Re is moderately incompatible element, while Os is highly compatible. As they are highly siderophile, Re-Os isotopic system can provide unique insight in dating and tracing research compared to other long-lived radiogenic isotope systems (e.g. Rb-Sr, Sm-Nd, U-Th-Pb ) which involve lithophile elements partitioning into silicate rather than metal or sulfide. The geologists have attached much importance to the particularity of Re-Os isotopic system and its application is getting popular. The author sums up and compares several kinds of sample digestion methods for Re-Os isotope analysis (NiS fire assay, Carius tube digestion, high pressure asher, leaching, and water disposing) , the procedures of separating Os ( conventional distillation, liquid Br2 and CCl4 or CHCl3 extraction, rapid extraction with low blank, minitype distillation) and purifying Os (microdistillation), improved mass spectrometry measurement of Os isotope(NTIMS, ICP-MS, in situ) and its application progress in the earth science research brought along the improved measuring method. 

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