【摘要】 用毛细管气相色谱法对食品中的防腐剂苯甲酸和山梨酸进行了分离分析。样品用乙醚萃取,萃取物蒸发至干,残渣用CHCl3溶解后直接进行色谱分析,FFAP石英毛细管柱,柱温220℃,邻苯二甲酸二甲酯为内标物。2种化合物在0.25～4.00mg/mL范围内具有良好的线性关系。更多还原

【Abstract】 The benzoic acid and sorbic acid in food were analyzed with capillary gas-chromatography. The samples were extracted with aether, and vaporized to nearly dry. The residue was dissolved with chloroform and analyzed with gas-chromatography: FFAP quartz capillary column, 220℃, and dimethyl phthalate (inner mark). A good linear range of the two compounds was found between 0.25～4.00mg/mL.更多还原