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Preparation of Four Chromium Ore Reference Materials.
- Source :
-
Geostandards & Geoanalytical Research . Mar2013, Vol. 37 Issue 1, p95-101. 7p. - Publication Year :
- 2013
-
Abstract
- The preparation and characterisation of four chromium ore reference materials are described in this paper. The sample material for GCr-1, GCr-3 and GCr-4 was collected from chromite deposits in Tibet, Qinghai province and Inner Mongolia. GCr-2 is a composite sample from GCr-1 and GCr-4. Sample homogeneity was tested by WD-XRF and the relative standard deviations were < 1.0%. An F-test showed that all four materials were homogeneous. Thirteen laboratories involved in the inter-laboratory programme provided 672 determinations (eighteen oxides and elements). Sixteen components were characterised as certified values, of which Cr2O3 ranged from 17.59 to 57.80% m/m. The contents of FeO and CO2 were taken as reference values. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CHROMIUM ores
*REFERENCE sources
*OXIDES
*DEVIATION (Statistics)
Subjects
Details
- Language :
- English
- ISSN :
- 16394488
- Volume :
- 37
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Geostandards & Geoanalytical Research
- Publication Type :
- Academic Journal
- Accession number :
- 86025882
- Full Text :
- https://doi.org/10.1111/j.1751-908X.2012.00162.x