流通池-介质交换-阳极溶出伏安法同时测定铜、锑、铋

Simultaneous Determination of Copper ( Ⅱ ) Antimony ( Ⅲ ) and Bismuth (Ⅲ ) by Differential Pulse Anodic Stripping Voltammetry with a Flow-through Cell and Medium Exchange

本文研究了同时测定Cu(Ⅱ)、Sb(Ⅲ)、Bi(Ⅲ)的方法。在盐酸溶液中对Cu(Ⅱ)、Sb(Ⅲ)、B(Ⅲ)进行预电解富集,经介质交换在选定的丙二酸-盐酸溶液中进行差示脉冲阳极溶出伏安法(DPASV)测定,相邻溶出峰的ΔE_p>80mV,波形完好。

Differential pulse anodic stripping voltammetry with a flow-through cell and medium exchange is used for the simultaneous determination of Cu(Ⅱ), Sb(Ⅲ) and Bi(Ⅲ) in acidic medium. The medium exchange procedure involves a deposition of Cu(Ⅱ ),Sb(Ⅲ) and Bi(Ⅲ) from HC1 solution, followed by stripping them into a selected CH2(CO2H)2-HC1 media. The three peaks are separated well with △Ep>80 mV. The method can be applied to the simultaneous determination of Cu(II), Sb(Ⅲ) and Bi(Ⅲ) in water samples with satisfactory results.