过碘酸钾法测定甘油含量既快又准,选择性也强,但是氧化时间和氧化时的条件若不能很好地掌握,往往误差甚大,文献中都把氧化时间定为十分钟,而对氧化时的条件未作说明。据笔者试验的情况,氧化反应的速度受温度、酸度和过碘酸钾与甘油的相对比 Potassium periodate method for the determination of glycerol content is fast and accurate, the selectivity is also strong, but the oxidation time and oxidation conditions if not well mastered, the error is often very large, the literature has set the oxidation time is ten minutes, The conditions at the time of oxidation are not described. According to the author’s test situation, the speed of oxidation reaction is affected by temperature, acidity and the relative ratio of potassium periodate to glycerol