毛细管柱气相色谱法同时测定化妆品中的甲醇和乙醇

Determination of methanol and ethanol in cosmetics by capillary column gas chromatography

采用气相色谱法,在国标方法的基础上,改用DB-WAX石英毛细管柱、用FID检测器,外标法进行定量,同时测定化妆品中的甲醇和乙醇,分析1个试样只需4 min。经验证方法的灵敏度高,重现性好,操作时间短,样品前处理简单实用,值得推广。

With the DB - WAX capillary column and FID detector, we improve the national standard methods to determine methanol and ethanol in cosmetics by gas chromatography. It only needs 4 minutes by using external standard method for quantifying. Compared with the national standard methods, it is sensitive, reproducible, short time and the pre -treatment is simple and practical.