5-Br-PADAP萃取光度法测定化探样品中的微量锑  

Extraction-Spectrophotometric Determination of Microamount of Antimony with 5-Br-PADAP in Geochemical Sample

作　　者：林猷壁 Lin You-bi

机构地区：[1]中国地质科学院岩矿测试技术研究所

出　　处：《岩矿测试》1984年第1期73-74,I0012,共3页Rock and Mineral Analysis

摘　　要：资料[1、2]研究了5-Br-PADAP和碘化钾同三价锑能够形成蓝绿色的三元络合物,且能被苯萃取。但未见应用于岩矿中微量锑的测定。资料[3]介绍了碘化铵能对岩矿样品进行挥发性分解,锑以三价锑和五价锑的形式挥发出来,达到分离目的。In this paper the optimum condition for Sb-1-5-Br-PADAP complex formation in the presence of iodide has been studied. The interference of other elements can be eliminated by extracted of complex with benzene from 0.75N sulfuric acid. The detection limit is 0.02 ug/ml, and the color is stable for at least 10 hours.

关 键 词：萃取光度法 三元络合物 化探样品 微量锑 碘化铵 三价锑 五价锑 碘化钾 

分 类 号：O65[理学—分析化学]