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Validation of sulphide‐bearing certified reference samples by primary calibration as applied to x‐ray fluorescence
Author(s) -
Staats Gotthard,
Strieder Stefan
Publication year - 1993
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/xrs.1300220304
Subject(s) - calibration , certified reference materials , x ray fluorescence , fluorescence , bearing (navigation) , analytical chemistry (journal) , environmental science , chemistry , chromatography , environmental chemistry , computer science , physics , optics , mathematics , detection limit , artificial intelligence , statistics
Sulphide‐bearing certified reference samples were validated by multi‐element wavelength‐dispersive XRF based on the SI units kilogram and mole. An oxidizing borate fusion ensured complete oxidation of the test samples and provided for identical physical and chemical conditions for reference and test samples. Matrix effects were successfully overcome by computer‐aided generation and production of perfectly adapted multi‐element calibration samples. The trueness of the validated results was achieved by the application of pure elements or their compounds having quality assured assays. Detailed and accurate analytical information on certified reference samples CCu‐19 and CZN‐1 (CANMET, Canada) and BCR 26, 27, 28 (Community Bureau of Reference, Belgium) are reported.