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用二苯甲酰甲烷(简称DBM)测定矿物中微量铀的经典方法烦冗费事。近年虽多用磷酸三丁酯-DBM法萃取光度测定铀,但其灵敏度较差。 Baltisbergr用三正辛基氧化膦(简称TOPO)的环己烷溶液从2N硝酸溶液萃取铀,继以1-(2-吡啶偶氮)-2-萘酚(简称PAN)在有机相分光光度测定大量钚中之微量铀。2-(2’-噻唑偶氮)-5-二乙氨基苯酚(简称TAE) 曾用于微量铀的分光光度测定,其性质与PAN相似,且较之灵敏。本文借氟化铵作隐蔽剂,用
The classic method of determining trace uranium in minerals with dibenzoylmethane (DBM) is cumbersome. In recent years, although the use of tributyl phosphate - DBM extraction photometric determination of uranium, but its sensitivity is poor. Baltisbergr extracts uranium from a 2N nitric acid solution using a cyclohexane solution of tri-n-octylphosphine oxide (TOPO), followed by spectrophotometry in organic phase with 1- (2-pyridylazo) -2-naphthol Large amounts of trace uranium in plutonium. 2- (2’-thiazolylazo) -5-diethylaminophenol (referred to as TAE) has been used for the determination of trace uranium spectrophotometry, its properties and similar PAN, and more sensitive. This article by ammonium fluoride as a covert agent, used