分光光度法测定食品中的锗

Determination of Germanium in Food by Spectrophotometric

在浓度为 1 .2 mol/ L的 HCl介质中 ,苯芴酮与锗反应生成橙红色络合物 ,λmax=5 30 nm,ε=3× 1 0 4 L· mol- 1 · cm- 1 ,锗含量在 0 .5 - 5 0μg/ 5 0 m L范围内符合比尔定律 ,本方法用于食品中锗的测定 ,结果令人满意。

In the presence of 1.2mol/L HCl solution,phenylfluorone can react with germanium to form orange colour complex.The malor absorptivity is 3×104 L·mol^-1·cm^-1.Beer's law is obeyed in the range of 0.5-50μg/50mL.This method can be applied to the determination of germanium in food with satisfactory result.