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采用乙醚提取,进入GC-FID,采用内标(十一烷酸)法对食品中11种防腐剂进行定量测定,该方法线性良好,检出限为0.84～5.01mg/kg,精密度为2.0%～3.6%,回收率在90.6%～98.8%,此方法操作简便,抗基质干扰、结果可靠,适合食品中多种防腐剂含量的准确测定。
Using ether extraction, enter the GC-FID, the internal standard (undecanoate) method for the determination of 11 kinds of preservatives in food, the method is good linearity, the detection limit of 0.84 ~ 5.01mg / kg, the precision of 2.0 % To 3.6%, and the recoveries from 90.6% to 98.8%. The method is simple and easy to operate and has the advantages of anti-matrix interference and reliable results. The method is suitable for accurately determining the content of various preservatives in food.