论文部分内容阅读
用线性扫描示波极谱法研究了Cd 茜素紫络合物的伏安行为 ,发现在含有 0 1mol/LKCl,pH4 9的NH4 Cl缓冲溶液中Cd —茜素紫络合物产生一灵敏的极谱吸附波 ,其峰电位为 - 0 6 6V(vs SCE) ,峰电流与Cd 的浓度在 8 0× 10 -8～ 2 0× 10 -6mol/L的范围内呈线性关系 ,检出限为 5 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金属铝中痕量镉
The voltammetric behavior of Cd - Alizarin violet complex was studied by linear sweep oscillopolarography. It was found that the Cd - Alizarin violet complex in NH4Cl buffer solution containing 0 1 mol / L KCl and pH4 9 produced a sensitive The peak potential was -06 6V (vs SCE) and the peak current was linear with the Cd concentration in the range of 8 × 10 -8 ~ 2 × 10 -6 mol / L. The detection limit Is 50 × 10 -8 mol / L. The electrode reaction mechanism was studied, and the determination of trace cadmium