Zhang Xiuying, Yin Guoyin, Hu Zhiguo
Key Laboratory of Environmental Science and Engineering, College of Chemistry and Environmental Science, Henan Normal University, Education Commission of Henan, Xinxiang, Henan, People's Republic of China.
Talanta. 2003 Apr 10;59(5):905-12. doi: 10.1016/S0039-9140(02)00646-X.
A method is proposed for the extraction and individual separation of trivalent gallium, indium and thallium with sec-octylphenoxy acetic acid (CA-12), sec-nonylphenoxy acetic acid (CA-100) and naphthenic acid (NA) from chloride media. The distribution equilibria of gallium (III), indium (III), thallium (III) and thallium (I) between carboxylic acids (CA-12, CA-100 and NA) dissolved in kerosene and acidic aqueous chloride media has been investigated as a function of the concentration of extractants and the concentration of hydrogen ion in aqueous phase. A possible mechanism of the extraction is discussed. The method permits rapid and precise individual separation of gallium (III), indium (III) and thallium (III), and is applicable to the analysis of alloy samples.
提出了一种用仲辛基苯氧基乙酸（CA - 12）、仲壬基苯氧基乙酸（CA - 100）和环烷酸（NA）从氯化物介质中萃取并分别分离三价镓、铟和铊的方法。研究了溶解在煤油中的羧酸（CA - 12、CA - 100和NA）与酸性氯化物水相介质之间镓（III）、铟（III）、铊（III）和铊（I）的分配平衡，该平衡是萃取剂浓度和水相中氢离子浓度的函数。讨论了可能的萃取机理。该方法能够快速、精确地分别分离镓（III）、铟（III）和铊（III），并适用于合金样品的分析。
