DETERMINATION OF URANIUM IN TIN TAILINGS USING 4-(2-PYRIDYLAZO) RESORCINOL BY FLOW-INJECTION ANALYSIS

Authors
GRUDPAN K SOOKSAMITI P LAIWRAUNGRATH S
Citation
K. Grudpan et al., DETERMINATION OF URANIUM IN TIN TAILINGS USING 4-(2-PYRIDYLAZO) RESORCINOL BY FLOW-INJECTION ANALYSIS, Analytica chimica acta, 314(1-2), 1995, pp. 51-55
Citations number
21
Categorie Soggetti
Chemistry Analytical
Journal title
Analytica chimica acta → ACNP
ISSN journal
00032670
Volume
314
Issue
1-2
Year of publication
1995
Pages
51 - 55
Database
ISI
SICI code
0003-2670(1995)314:1-2<51:DOUITT>2.0.ZU;2-6
Abstract
A flow-injection determination of uranium in tin tailings has been pro posed. The method is based on complex formation of U-VI with 4-(2-pyri dylazo)resorcinol (PAR). A solution containing uranium(VI) is injected into merged streams of triethanolamine buffer and PAR-CDTA-sulfosalic ylic acid solution. The coloured product is monitored at 530 nm. The m ethod has been applied to tin tailing samples digested with HF-HNO3. T he detection limit is 0.28 mg U l(-1). A sampling rate of 180 h(-1) an d an RSD of 3.5% (at 5 mg U l(-1), n = 12) are obtained.