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本文提出了利用吸附溶出催化伏安法测定人参中锗的方法。最佳体系为:2.5×10~(-2)mol/LH_2O_2、2.0×10~(-2)mol/L邻苯二酚、2.0×10~(-3)mol/L H_2SO_4。线性范围为2.0×10~(-9)～2.0×10~(-7)mol/L。当富集时间为4 min时,最低检测浓度为4.0×10~(-10)mol/L。此法己成功地应用于测定人参中的锗。
In this paper, a method for the determination of germanium in ginseng by adsorptive stripping catalytic voltammetry is proposed. The best system was 2.5 × 10 -2 mol / LH 2 O 2, 2.0 × 10 -2 mol / L catechol and 2.0 × 10 -3 mol / L H 2 SO 4. The linear range was 2.0 × 10 ~ (-9) ~ 2.0 × 10 ~ (-7) mol / L. When the enrichment time was 4 min, the minimum detection concentration was 4.0 × 10 ~ (-10) mol / L. This method has been successfully applied to the determination of germanium in ginseng.