【摘要】 <正> 萃取分离测定同一样品中镓、铟和铊的工作,国内外近年来都有研究。本文在A.E.HuberT等工作的基础上提出,在氢溴酸介质中,以甲基异丁基甲酮(MIBK)为萃取剂,甲苯为稀释剂,调节水相酸度,分步萃取,有机相直接显色分光光度法测定同一样品浸提液中镓、铟和铊。该方法的特点是分步萃取后,有机相既不经反萃取也不经蒸干,直接用分光光度法进行测定,具有简便,准确的优点并成功地应用于矿样分析。 实验 1.仪器及试剂 721分光光度计(上海第三分析仪器厂) 氢溴酸 分析纯40％约为7mol/L(用时可进行标定)。更多还原

【Abstract】 The sample is decomposed with hydrofluoric acid, aqua regia and hydro-bromic acid. T1 is first extracted from 0.1mol/L HBr medium, then In is extracted from 2.4mol/L HBr, finally, Galium is extracted from 6 mol/L (HBr + HCl).This method has been applied to the determination of trace amounts of Ga, In and Tl in ores and satisfactory results was obtained.更多还原