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.

引用

页码：51 / 55

页数：5

共 21 条

[1] SPECTROPHOTOMETRIC DETERMINATION OF URANIUM IN NATURAL-WATERS AFTER PRECONCENTRATION OF TBP-PLASTICIZED DIBENZOYLMETHANE-LOADED POLYURETHANE FOAMS [J].