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Material Database:
SRM 979 - Chromium (Isotopic)
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| Type |
Certified reference material |
| Producer |
National Institute of Standards and Technology (NIST)
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| Status |
Available |
| Material |
Solid |
| Reference |
SRM 979 |
| Catalog (Web) |
https://www-s.nist.gov/srmors/view_detail.cfm?srm=979 |
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Description
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Chromium (Isotopic)
The preparation furnished is a commercial sample of hydrated chromium nitrate [Cr(NO3) a • 9H O]. Measurements are by single filament (platinum) mass spectrometry, using mixtures of known composition prepared from high-purity separated isotopes as comparison standards.
keywords: isotope ratio measurement
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Package |
0.25 g |
Parameter
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| Analyte | Chromium | | Specification | CR-53 / Cr-52 | | Parameter | Certified value | | Unit | Absolute Abundance Ratio | | Result | .11339 +/- .00015 | |
| Analyte | Chromium | | Specification | Chromium-50 | | Parameter | Certified value | | Unit | atom percent | | Result | 4.345 +/- 0.009 | |
| Analyte | Chromium | | Specification | Chromium-52 | | Parameter | Certified value | | Unit | atom percent | | Result | 83.789 +/- .012 | |
| Analyte | Chromium | | Specification | Chromium-53 | | Parameter | Certified value | | Unit | atom percent | | Result | 9.501 +/- .011 | |
| Analyte | Chromium | | Specification | Chromium-54 | | Parameter | Certified value | | Unit | atom percent | | Result | 2.365 +/- .005 | |
| Analyte | Chromium | | Specification | Cr-50 / Cr-52 | | Parameter | Certified value | | Unit | Absolute Abundance Ratio | | Result | 0.05186 +/- 0.00010 | |
| Analyte | Chromium | | Specification | Cr-54 / Cr-52 | | Parameter | Certified value | | Unit | Absolute Abundance Ratio | | Result | .02822 +/- .00006 | |
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