咨询热线
13820734559
QQ：1454116470
天津欧捷科技代理瑞士santis,英国labco,美国alpha,德国元素elementar,美国thermo等品牌耗材
咨询热线
13820734559
QQ：1454116470
VSMOW2 , Water,水中氢氧同位素标样,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,VSMOW2 , Water,水中氢氧同位素标样... VSMOW2 , Water,水中氢氧同位素标样,IAEA同位素标样 2H and 18O in water samples , Water
Unit Size: 20 ml
VSMOW2 (Vienna Standard Mean Ocean Water 2) is an international measurement standard for stable isotope analysis. This water material was prepared at the IAEA Isotope Hydrology Laboratory in 2006 to replace the exhausting VSMOW material. VSMOW2 was mixed from carefully calibrated distilled natural water samples in order to obtain a stable isotopic composition as similar as possible to that of the original VSMOW. Five selected laboratories provided calibration measurements in direct comparison to VSMOW. All δ-values will continue to be reported in the VSMOW/SLAP scale, using VSMOW2 and SLAP2 as calibration materials with their assigned stable isotope reference values.
| Analyte | Value | Unit | SD | R/I/C |
|---|---|---|---|---|
| δ18O | 0 | ‰ | 0.02 | R |
| δ2H | 0 | ‰ | 0.3 | R |
(SD) Standard uncertainty at 1 sigma level calculated from results of calibrations performed at five laboratories.
(R/I/C) Classification assigned to the property value for analyte (Recommended/Information/Certified)
References:
GRÖNING, M., VAN DUREN, M., ANDREESCU, L., Metrological characteristics of the conventional measurement scales for hydrogen and oxygen stable isotope amount ratios: the δ-scales. In: Combining and Reporting Analytical Results, Eds. A. Fajgelj, M. Belli, U. Sansone. Proceedings of an International Workshop on “Combining and reporting analytical results: The role of traceability and uncertainty for comparing analytical results”, Rome, 6-8 March 2006. Royal Society of Chemistry (2007) 62-72.
