PRECONCENTRATION OF URANIUM(VI) ON MODIFIED AND UNMODIFIED AMBERLITE XAD-4 SORBENT

被引：8
|
作者：
VACHA, J
SOMMER, L
机构：
来源：
COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS | 1993年 / 58卷 / 08期
关键词：
D O I：
10.1135/cccc19931813
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The sorption of uranyl ions on columns with the macroporous hydrophobic sorbent Amberlite XAD 4 modified with 1-(2-pyridylazo)-2-naphthol, 1-(2-thiazolylazo)-2-naphthol and sodium diethyldithiocarbamate was examined. Following elution of the uranyl ion with HNO3 (2 - 4 mol l-1) or of the diethyldithiocarbamate UO22+-chelate with a methanolic solution of HCl (0.1 mol l-1), uranium was determined spectrophotometrically with 4-(2-pyridylazo)resorcinol or with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol. The preconcentration of uranium on Amberlite XAD 4 type sorbents is convenient for its spectrophotometric determination in waters.
引用
收藏
页码：1813 / 1820
页数：8
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