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苯芴酮光度法测定锡是一个比较灵敏的分析方法,特别是引入CPB-CTAB等胶束增溶剂后,灵敏度就更高了。不过苯芴酮与锡的反应并非特效反应,需要经过一定的分离手续。本文试用原子吸收测定锡的氢化物分离法,将分离出的还原性气体—四氢化锡导入高锰酸钾溶液中氧化成四价锡,进行苯芴酮显色。方法简便,用于复杂矿样中0.005—0.5％锡的测定。
Benzofluorenone spectrophotometric determination of tin is a more sensitive analytical method, especially the introduction of CPB-CTAB other micellar solubilizer, the sensitivity is even higher. However, the reaction of benzofluorenone and tin is not a specific reaction, need to go through certain separation procedures. In this paper, atomic absorption spectrometry determination of tin hydride separation method, the separation of the reducing gas - tin tetrachloride into the solution of potassium permanganate oxidation into tetravalent tin, benzofluorenone color. The method is simple and convenient and is used for the determination of 0.005-0.5% tin in complex ore samples.