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IAEA稳定同位素标样，Calcite

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天津欧捷科技有限公司代理国际原子能机构IAEA稳定同位素标样，Calcite，NBS18
NBS 18 , Calcite

Inorganic , Mineral

  • Unit Size: 0.5 g

NBS 18 was prepared by I. Friedman, J. R. O’Neil ａnd G. Cebula [1] of the U.S. Geological Survey. The material used for NBS 18 was a carbonatite from Fen, Norway, collected by B. Taylor, University of California, Davis, USA, ａnd crushed by H. Friedrichsen, University of Tübingen, Federal Republic of Germany. The fraction between 88 μm ａnd 440 μm was bottled as NBS 18. Its recommended δ13C value was determined in an international calibration study [2]. The recommended δ18O value is a mean from data of several interlaboratory comparisons [1,3,4].

Analyte Value Unit SD R/I/C
δ13C -5.014 ‰VPDB 0.035 C
δ18O -23.2 ‰VPDB 0.1 R

(R/I/C) Classification assigned to the property value for analyte (Recommended/Information/Certified)


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