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中文名稱：Calcite Mineral 13C and 18O
英文名稱：Calcite Mineral 13C and 18O訂貨以英文名稱為準(zhǔn)。
產(chǎn)品編號：NBS18CAS：/
品牌：標(biāo)準(zhǔn)物質(zhì)產(chǎn)地：進口
標(biāo)準(zhǔn)值：見證書分子式：/
規(guī)格 市場價(元) 折后價(元) 供貨周期 數(shù)量 加入購物車 0.5g 0.00 0.00 3-4周 加入購物車
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產(chǎn)品詳細(xì)介紹
NBS18Calcite Mineral 13C and 18O
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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