本法基于甘油和聚合甘油在硫酸溶液中均被重铬酸钾氧化，从而测得甘油与聚合甘油总量，和甘油与高碘酸钾反应时生成甲酸而聚合甘油不能生成甲酸，测得甘油含量，将这两个测定值相减，即得到聚合甘油含量。方法简便，数据稳，适于工厂分析。用本测定了甘油蒸脚中的聚合甘油含量。 This method is based on glycerol and glycerol in the sulfuric acid solution are potassium dichromate oxidation, thus measuring the total amount of glycerol and polyglycerol, and glycerol and potassium periodate reaction of formic acid and polymerization of glycerol can not generate formic acid, measured glycerol Content, these two measured value subtraction, that is, to obtain the polymerization of glycerol content. The method is simple, data stable, suitable for factory analysis. The content of the polymerized glycerin in the glycerin steamed foot was measured by this method.