摘要
通过实验,建立了用毛细管气相色谱法测定工业甲醇中微量乙醇的分析方法,采用外标法定量。结果表明,本方法线性相关系数0.9998,检出限0.06mg·L-1,平均回收率99.4%,精密度高,较目前普遍使用的填充柱气相色谱内标法更加快速简便,更适用于工业甲醇中微量乙醇的测定。
The capillary gas chromatography mensuration was established to test trace ethanol in methanol for industrial use by external standard method. The result showed that the linear coefficient was 0.9998 and the testing limit was 0.06mg·L^-1.The average ratio of etheanol recovery was 99.4% with high precision. This method was more covenient and faster than the popular-used filled-tube gas chromatography internal standard mensuration.
出处
《化学工程师》
CAS
2009年第11期31-32,35,共3页
Chemical Engineer
关键词
毛细管气相色谱
工业甲醇
微量乙醇
外标法
capillary gas chromatography mensuration
methanol for industrial use
trace ethanol
external standard method
