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利用盐酸与锗元素反应生成易挥发的四氯化锗 ,以蒸馏方法将四氯化锗分离出来 ,然后在 1～ 1.5mol/L盐酸溶液中 ,用显色剂苯芴酮与四氯化锗进行显色反应生成橙红色配合物 ,在 5 0 0nm波长处进行分光光度法测定。在 0～ 2 0 0 μg/ (5 0mL) ,线性方程为A =0 .171 4c ,相关系数r=0 .999 6。该方法的检出限为 0 .0 5 8 8μg/mL ,测定结果的相对标准偏差为 2 .2 4 %～ 2 .30 % (n =11) ,平均回收率为 95 .3%～ 95 .4 %。
The use of hydrochloric acid and germanium element reaction to generate volatile germanium tetrachloride, germanium tetrachloride by distillation method was isolated, and then in 1 ~ 1.5mol / L hydrochloric acid solution, with the reagent benzofluorenone and germanium tetrachloride Color reaction to produce orange-red complex, at a wavelength of 500nm spectrophotometric determination. At 0 ~ 200 μg / (50 mL), the linear equation was A = 0.171 4c with a correlation coefficient of r = 0.999 6. The detection limit of this method was 0.058 8 μg / mL. The relative standard deviations (RSDs) of the method were from 2.2% to 2.30% (n = 11). The average recoveries ranged from 95.3% to 95%. 4%.