【摘要】 在 KOH 底液中,Bi(Ⅲ)-8-羟基喹啉-5-磺酸体系有一灵敏的还原波,其单扫导数峰电位为-0.68V(VS.SCE),可应用于微量铋的测定.工作曲线线性范围为0.05～1.0μmol/L,最低检测限为0.02μmol/L.运用多种方法探讨了该波的还原机理,认为是络合吸附波.更多还原

【Abstract】 In a supporting electrolyte containing potassium hydroxide, a sensitive derivative peak of Bi(Ⅲ)-8-hydroxy-5-quinolinesulfonic acid (HQSA) complex is found by single-sweep oscillopolarography.The peak shows a potential of -0.68V(vs.SCE)and its height is linearly proportional to the concentration of Bi in the range of 0.05 to 1.0 μmol/L.The machan- ism of the wave formation is determined by various methods.It is confirmed that the peak wave is the adsorptive-complex wave of Bi(Ⅲ)-HQSA.更多还原