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本文研究了锗(Ⅳ)-连苯三酚体系在悬汞电极上的微分脉冲吸附伏安法。提出了用该法测定微量锗的最佳体系为0.1mol/L KCl+0.5mol/LHCl+4×10~(-4)mol/L连苯三酚。当富集时间为4min时,最低检测浓度为1.2×10~(-10)mol/L锗。同时研究了此体系在悬汞电极上的吸附特性及电极过程。
In this paper, the differential pulse voltammetry voltammetry of germanium (Ⅳ) - pyrogallol system at the hanging mercury electrode was studied. The optimal system for the determination of trace germanium by this method is proposed to be 0.1 mol / L KCl + 0.5 mol / LHCl + 4 × 10 -4 mol / L pyrogallol. When the enrichment time is 4 min, the lowest detection concentration is 1.2 × 10 -10 mol / L germanium. At the same time, the adsorption characteristics and electrode process of the system on the hanging mercury electrode were studied.