GC－FID分析啤酒废水发酵液中乙酸、丙酸及丁酸含量

Determination of C_(2￣4)Fatty Acid in Fermentation Liquor of Beer's Waste Water by Gas Chromatography

以ＧＤＸ－１０１为色谱固定相，氢火焰离子化检测器ＦＩＤ测定，对啤酒生产废水生物沼气发酵液中乙酸、丙酸及丁酸进行色谱分析．平行６次实验，相对标准偏差ＲＳＤ小于３％，适于工业废水中低含量（１０￣（－６））游离脂肪酸的分析检测．

A new method of analyzing the acetic acid,propionic acid and butyric alid in the biodegraded fermentation liquor of beer's waste water using GDX-101 as immobile phaseand FID as detector is presented.The results showed that GDX-101 can take the place of chromosorb-101.The relative standard deviation(RSD)of six duplicate experiments isless than 3%.This method can be applied to determining the microamount of the free fatty acid in the industrial waste water.