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用氢氧化锆共沉－比色法测定二羧乙基锗倍半氧化物中二氧化锗的含量，先将锗与氢氧化锆共沉，沉淀用盐酸溶解，再用四氯化碳萃取盐酸溶液中锗，锗用苯芴酮比色法在５１０ｎｍ处测定。结果，锗在１０－６～１０－５ｍｏｌ／Ｌ范围内吸收度与浓度呈线性关系，回收率为９８％～１０３％，变异系数小于５％，可用于原料及制剂中二氧化锗的分析。
Determination of germanium dioxide content in dicarboxyethylgermanium sesquioxide by zirconium hydroxide co-precipitation-colorimetric method. First germanium is co-precipitated with zirconium hydroxide, the precipitate is dissolved with hydrochloric acid, then hydrochloric acid is extracted with carbon tetrachloride Germanium and germanium in solution were determined by phenyl fluorenone colorimetry at 510nm. The results showed that the concentration of germanium in the range of 10-6 ~ 10-5mol / L showed a linear relationship with recoveries of 98% -103% and a coefficient of variation of less than 5%, which could be used for the analysis of germanium dioxide in raw materials and preparations.