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用线性扫描示波极谱法研究了镉（Ⅱ）－茜素紫－邻二氮菲体系的极谱行为，发现在含有０．１ｍｏｌ／Ｌ ＫＣＩ、ｐＨ＝２．８５的 ＨＡｃ溶液中，镉（Ⅱ）－茜素紫－邻二氮菲体系产生一灵敏的极谱吸附波，其峰电位为－ ０．６４ Ｖ（ｖｓ． ＳＣＥ），峰电流与镉（Ⅱ）的浓度在 ５．０ × １０－８～ １．０ × １０－６ ｍｏｌ／Ｌ的范围内呈线性关系；检出限为 ３．０ × １０－８ｍｏｌ／Ｌ。研究了电极反应机理，并用建立的方法成功地测定了废水样中的镉。
The polarographic behavior of Cd (Ⅱ) -Alizarin violet-phenanthroline system was studied by linear sweep oscillopolarography. It was found that in HAc solution containing 0.1 mol / L KCl and pH = 2.85, (Ⅱ) -Alizarin violet-phenanthroline-phenanthroline system produced a sensitive polarographic adsorption wave with a peak potential of-0.64 V (vs. SCE) and a peak current and concentration of cadmium × 10-8 ~ 1.0 × 10-6 mol / L. The detection limit was 3.0 × 10-8mol / L. The electrode reaction mechanism was studied, and the cadmium in wastewater samples was successfully determined by the established method.