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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(Ⅲ) Alizarin Complexan Complex and Application

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【作者】 卢巽珍卢顺利

【Author】 Lu Xun-zhen

【机构】 天津地质矿产研究所天津地质矿产研究所

【摘要】 <正> 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

【Abstract】 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 0.01 μg/ml to 0.4 μg/ml, Down to 0.005 μg/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 (Ⅳ) can be reduced by adding ascorbic acid before extracting antimony with benzene.Some an ions such as chloride, bromide, nitrare etc., do not interfere, butsuccinic acid increases the wave height by 18%.

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