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食品添加剂在合成和后处理过程中常用有机溶剂.需对其进行定量测定。一般食品添加剂的分子量大,挥发性小,对其中所残留的微量挥发性溶剂的测定用顶空色谱法(HSGC)是最简便和有效的。本方法是测定食品添加剂中残留的乙酸乙酯。固体样品溶于四氢呋喃(THF)—水混合溶剂中。OV-17毛细管柱分离。内加法定量,利用THF中与乙酸乙酯相邻,含量相近的杂质峰作参
Food additives commonly used in the synthesis and post-processing of organic solvents need to be quantitatively determined. General food additives have high molecular weight and low volatility. Determination of trace amounts of volatile solvents remaining in them is most convenient and effective using headspace chromatography (HSGC). This method is to determine the residual ethyl acetate in food additives. Solid samples were dissolved in tetrahydrofuran (THF) -water mixed solvent. OV-17 capillary column separation. The internal addition was quantified using the impurity peak adjacent to ethyl acetate in THF at similar levels for reference