Extraction-chromatographic Separation of Microamount of Indium(Ⅲ) with DMH(MP) Resin and Its Analytical Application

The optimum conditions for extraction-chromatography using di-(l-methylheptyl) methylphosphonate resin to separate indium(Ⅲ) from its coexisting metal ions were studied. A procedure for extraction- chromatographic separation and spectrophotometric determination of indium has been developed. This proce- dure gives more clear-cut separation and higher accuracy and reproducibility than ordinarily used separation by solvent extraction with butyl acetate. Besides, it can be used to separate and determine cadmium simultaneously.

甲基膦酸二甲庚脂-HBr体系萃取色层法分离微量镉及其应用

本文提出了以 P350为固定相,硅胶为载体,1.0mol/L HBr 为流动相,采用水作洗脱液的萃取柱色层分离微量镉的新方法。研究了分离条件,萃取保留机理和干扰等。用制定的方法对铅锌矿和冶炼电转尘中微量镉进行了分离测定,均获得良好结果。回收率在95～102％之间。

萃取色层分离铟及微量铟的测定和应用

用甲基膦酸二(1-甲基庚基)酯树脂为固定相,金属离子在稀氢溴酸中的溶液为料液,萃取色层分离铟(Ⅲ)的新方法。由于钢(Ⅲ)的淋洗峰与其相邻离子的林洗峰间有一定的空白区,所以能将铟(Ⅲ)与其他离子清楚地分开。收集的铟(Ⅲ)洗脱液在CTMAB存在下用SAF或显色后进行分光光度测定,经合成试液及实际试样的测定数据表明,用于分离及测定微量铟,具有良好的准确度及重现性。