锑与茜素氨羧络合剂的络合吸附波及其应用  

A Study of Polarographic Adsorption Wave of Antimony(HI)Alizarin Complexan Complex and Application

作　　者：卢巽珍[1] 卢顺利[1] Lu Xun-zhen

机构地区：[1]天津地质矿产研究所

出　　处：《岩矿测试》1985年第3期253-256,I0014,共5页Rock and Mineral Analysis

摘　　要：在前人的基础上我们进行锗—茜素S络合物吸附波探讨发现锑与试剂络合,在滴汞电极上产生一个明晰的导数示波极谱波。根据资料介绍锑的分析功能团是芳核上含有基团的有机化合物,如邻苯二酚、连苯三酚以及其衍生物、茜素S等。In formic acid medium at pH 2.8-3.6,antimony(III)-alizarin complexan complex shows an adsorption single sweep derivative polarographic wave at about-0.54v(vs.S.C.E.).The height of the wave is proportional to antimony concentration between 0.01μg/ml to 0.4μg/ml .Down to 0.005 A g/ml antimony can be determined. The optimum condition for determination of antimony is 2-4% HCOOH, and 2·10^(-5)-4·10^(-5) M alizarin complexan at pH 2.8-3.6.Many metallic ions, except tin (IV), selenium (IV) and chromium (VI), do not interfere. Chromium (VI) and selenium (W) can be reduced by adding ascorbic acid before extracting antimony with benzene.Some an ions such as chloride, bromide, nitrare etc., do not interfere, but succinic acid increases the wave height by 18%.

关 键 词：络合物吸附波 络合吸附波 滴汞电极 茜素氨羧络合剂 连苯三酚 茜素S 有机化合物 邻苯二酚 

分 类 号：O65[理学—分析化学]