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

被引：13
作者：
GRUDPAN, K [1 ]
SOOKSAMITI, P [1 ]
LAIWRAUNGRATH, S [1 ]
机构：
[1] CHIANG MAI UNIV,FAC SCI,DEPT CHEM,CHIANG MAI 50200,THAILAND
来源：
ANALYTICA CHIMICA ACTA | 1995年 / 314卷 / 1-2期
关键词：
SPECTROPHOTOMETRY; FLOW INJECTION; URANIUM; TIN TAILINGS; 4-(2-PYRIDYLAZO)RESORCINOL;
D O I：
10.1016/0003-2670(95)00265-2
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A flow-injection determination of uranium in tin tailings has been proposed. The method is based on complex formation of U-VI with 4-(2-pyridylazo)resorcinol (PAR). A solution containing uranium(VI) is injected into merged streams of triethanolamine buffer and PAR-CDTA-sulfosalicylic acid solution. The coloured product is monitored at 530 nm. The method has been applied to tin tailing samples digested with HF-HNO3. The detection limit is 0.28 mg U l(-1). A sampling rate of 180 h(-1) and an RSD of 3.5% (at 5 mg U l(-1), n = 12) are obtained.
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页码：51 / 55
页数：5
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