【摘要】 本文研究了锡-向红菲啰啉体系在悬汞电极上的伏安行为,在pH＝2.80的0.07mol/L氯乙酸-氯乙酸钠介质中,Sn（IV）-向红菲啰啉络合物于1.5次微分伏安图上在-0.56V（us.SCE）电位处产生一良好的吸附还原波,波高与Sn（IV）的浓度在5.0×10^-96.O×10^-7mol/L范围内呈线性关系,检出下限为2.5×10^-9mol/L Sn（IV）,用本法对冶金标样中锡进行测定,取得了满意的结果.更多还原

【Abstract】 The electrochemical behavior of tin-4,7-diphenyl-1,10-phenanthroline(BPT) system at a hanging mercury electrode was investigated in a buffer solution of 0. 07 mol/L ClCH2COOH-ClCH2COONa (pH = 2. 80), the Sn(Ⅳ)-BPT complex produces a reduction peak at -0. 56 V(vs.SCE) on the 1. 5th order differential linear sweep voltammetric curve. The detection limit and linear range of tin are 2. 5×10-9 mol/L and 5. 0×10-9-6. 0×10-7 mol/L respectively. This method has been applied to the determiantion of tin in metallic standardized samples.更多还原