ATOMIC-ABSORPTION SPECTROMETRY DETERMINAT ION OF TUNGSTEN .3. ORES AND CONCENTRATES ANALYSIS

Authors
PORTA LF MOYANO S VILLEGAS OI LOPEZ RO MERODIO YJC
Citation
Lf. Porta et al., ATOMIC-ABSORPTION SPECTROMETRY DETERMINAT ION OF TUNGSTEN .3. ORES AND CONCENTRATES ANALYSIS, Anales de la Asociacion Quimica Argentina, 82(2), 1994, pp. 85-90
Citations number
9
Categorie Soggetti
Chemistry
Journal title
Anales de la Asociacion Quimica Argentina → ACNP
ISSN journal
03650375
Volume
82
Issue
2
Year of publication
1994
Pages
85 - 90
Database
ISI
SICI code
0365-0375(1994)82:2<85:ASDIOT>2.0.ZU;2-C
Abstract
A method for tungsten determination in ores and concentrates by atomic absorption spectrometry in aqueous medium has been developed. The sam ple is fused with potassium hydrogen sulfate and dissolved during heat ing with tartaric and phosphoric acid solutions. The W is determined a t 255.1 nm. in nitrous oxide-acetylene flame by applying the method of standard additions. The average obtained by atomic absorption spectro metry shows confidence intervals variable between +/- 0.02 and +/- 0.0 7 and relative standard deviations between 0.021 and 0.034.