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NBS 28,Quarz Sand,石英砂,IAEA同位素标样 天津欧捷科技有限公司代理奥地利IAEA原子能机构同位素标样,NBS 28,Quarz Sand,石英砂... NBS 28,Quarz Sand,石英砂,IAEA同位素标样 Materials with known 2H, 13C, 15N and 18O isotopic composition
Unit Size: 0.5 g
NBS 28 was obtained by I. Friedman, U.S. Geological Survey from Corning Glass Company. It was washed with acid to remove impurities and the fraction between 100 µm and 177 µm was separated and packaged. The material serves as primary calibrator for silicon δ32Si measurements and its 32Si/30Si ratio defines the zero point of the δ32Si scale [1,2].
| Analyte | Value | Unit | SD | R/I/C |
|---|---|---|---|---|
| δ18O | +9.6 | ‰VSMOW1 | 0.1 | R |
| δ30Si | 0? | ‰ | - | C |
(R/I/C) Classification assigned to the property value for analyte (Recommended/Information/Certified)
[1] VSMOW scale
[?] by definition
References:
HUT, G., Consultants' Group Meeting on Stable Isotope Reference Samples for Geochemical and Hydrological Investigations, Vienna, Austria, 16 - 18 September 1985. Report to the Director General, International Atomic Energy Agency, Vienna (1987).
GRÖNING, M., "International stable isotope reference materials", Handbook of stable isotope analytical techniques, Volume I, Chapter 40, (De Groot, P.A., Ed.), Elsevier (2004) 874-906.
