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锗在联苯三酚(2,3-二羟基苯酚)盐酸介质中形成具有吸附性质的配合物。它在-0.65V(vs.S.C.E.)处出现一灵敏的配合吸附峰。研究结果表明,用二阶导数卷积吸附伏安法可检测低至0.09ng/ml的痕量锗,且在0.3～186ng/ml Ge(Ⅳ)范围内呈线性关系。该法用于矿样中痕量锗的测定,结果满意。研究了该波的配合吸附性质,确定该吸附配合物的组成为1:1,其条件稳定常数β为200。
Germanium forms complexes with adsorptive properties in the biphenol (2,3-dihydroxyphenol) hydrochloric acid medium. It shows a sensitive adsorption peak at -0.65V (vs.S.C.E.). The results show that the second order derivative convolution voltammetry can detect traces of germanium as low as 0.09ng / ml and a linear relationship in the range of 0.3 ~ 186ng / ml Ge (Ⅳ). The method is applied to the determination of trace germanium in ore samples with satisfactory results. The adsorption properties of the complex were studied. The composition of the complex was determined to be 1: 1 with a constant β of 200.