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获取电话NBS 28 , Quarz Sand
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).
GR?NING, 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.
