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在甲酸盐缓冲溶液(pH3.5)中,锑(Ⅲ)-没食子酸丙酯配合物产生一灵敏的吸附波,峰电位在-0.52V(vs.SCE)左右,峰高与锑浓度在4.1×10~(-3)-6.6×10~(-6)mol/dm~3之间呈线性关系。机理研究表明,峰电流是由配合物中锑(Ⅲ)的还原而产生的。方法已应用于铜合金中锑的直接测定。
In the formate buffer solution (pH3.5), the antimony (Ⅲ) -propyl gallate complex produced a sensitive adsorption wave with a peak potential of -0.52V (vs.SCE) 4.1 × 10 ~ (-3) -6.6 × 10 ~ (-6) mol / dm ~ 3. Mechanism studies show that the peak current is generated by the reduction of antimony (Ⅲ) in the complex. The method has been applied to the direct determination of antimony in copper alloys.