改进法快速测定餐洗剂中的甲醇

为了更简便、快速地测定餐具洗涤剂中的甲醇,同时减轻对色谱柱的污染、延长柱寿命,本文采用将样品稀释和另配外标物的方法测定。分析时间仅为原方法的1/4,此方法精密、准确,测定结果与国标法的差异无显著意义。4份样品测定结果相对标准偏差1.0％～4.4％,7份样品的加标回收率为95.0％～102.0％。

In this paper, for the purpose of measuring the methyl alcohol in tableware detergent more conveniently and faster, reducing the chromater - column pollution and prolongoing its used time, the author used a new method of diluting specimen and making external standard. With this, the analysis time can be shorted to 1/4 as long as before.The method is precise and accuracy.There is no remarleable difference between the resulting precision and accuracy of GB Mensuration. The relative standard deviation for 4 specimens is 1.0% -4.4% ,The recycle ratio for 7 specimens is 95.0% - 102.0% .