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Quantitation of vanadium oxides in airborne dusts by x-ray diffraction.

Authors
Carsey-TP
Source
Anal Chem 1985 Sep; 57(11):2125-2130
NIOSHTIC No.
00209186
Abstract
The determination and quantitation of three vanadium oxides in airborne dusts by membrane filter collection and X-ray diffraction were described. Usable X-ray diffraction lines were established for vanadium-pentaoxide (1314621) (V2O5), vanadium-trioxide (1314347) (V2O3), and ammonium-metavanadate (7803556) (NH4VO3). Standard vanadium oxide samples were prepared by spiking silver filters with known amounts of analyte. Generated samples of all three oxides were prepared using an eight sample generation system. Mine dust matrix samples were spiked with specific amounts of mine dust and of analyte, and subsequently analyzed by X-ray diffraction. Five diffraction lines of analytical quality were established for V2O5. The generated samples of V2O5 in this method had an analytical range of 170 to 2300 micrograms per filter with an overall precision of 8.25%, and a bias of 10.1%. X-ray diffraction analysis of V2O3 revealed six lines of potential analytical quality. The generated samples of V2O3 in this method had an analytical range of 64.5 to 625 micrograms per filter with an overall precision of 14.7%, and a bias of -10.1%. Seven potentially useful analytical lines for NH4VO3 were found, but only two were utilized. The method provided an overall analytical range of 21 to 225 micrograms per filter with an overall precision of 26.3%, and a bias of -10.2%. The recommended analytical lines for vanadium oxide quantitation avoid common interferences and particle size effects on diffraction line intensity.
Keywords
NIOSH-Author; Analytical-methods; Quantitative-analysis; Dust-sampling; Toxicology; Vanadium-dust; Vanadium-compounds; X-ray-analysis
CODEN
ANCHAM
CAS No.
1314-62-1; 1314-34-7; 7803-55-6
Publication Date
19850901
Document Type
Journal Article
Fiscal Year
1985
NTIS Accession No.
NTIS Price
Issue of Publication
11
Source Name
Analytical Chemistry
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