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GRESP , Water,水中氢氧同位素，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,GRESP , Water,水中氢氧同位素... GRESP , Water,水中氢氧同位素，IAEA同位素标样 2H and 18O in water samples , Water
Unit Size: 20 ml
GRESP (Greenland Summit Precipitation) has been prepared at the IAEA to provide a water quality control material to check the calibration by the VSMOW2 and SLAP2 international measurement standards. GRESP is certified for its hydrogen and oxygen stable isotopic composition, on a δ-scale as defined by the isotopic compositions of the two water international measurement standards VSMOW2 and SLAP2 and denoted with δ2H VSMOW-SLAP and δ18O VSMOW-SLAP.
| Analyte | Reference value | Unit | Combined standard uncertainty | R/I/C |
|---|---|---|---|---|
| δ2H | -257.8 | ‰ | 0.4 | R |
| δ18O | -33.39 | ‰ | 0.04 | R |
δ2H and δ18O reference values for the certified reference material GRESP and the associated combined standard uncertainties (1σ level; using a coverage factor of k=1), all expressed on the respective VSMOW-SLAP scale.
(R/I/C) Classification assigned to the property value for analyte (Recommended/Information/Certified)
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