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产品名称:
IAEA稳定同位素标样,NBS18,Calcite
货  号:
NBS18
规  格:
0.5g
品牌:
 
   产品说明
 

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)

  • 上一个产品: 国际原子能机构IAEA稳定同位素标样,IAEA-603

  • 下一个产品: USGS实验室同位素标准品
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