摘要
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。
Adsorptive stripping catalytic voltammetry has been used to determine germanium inginseng using a supporting electrolyte of 2.5×10^(-2)mol/L H_2O_2, 2.0×10(-2)mol/L pyrocatechol,and 2.0×10^(-3)mol/L H_2SO_4. The peak high of germanium-pyrocatechol complex maintains aliner relationship with concentration within the range of 2. 0×10^(-9)～2.0×10^(-7)mol/L.
关键词
人参
锗
吸附溶出
催化伏安法
测定
Geymanium
ginseng
adsorptive stripping catalytic voltammetry
