摘要
苯甲酸、山梨酸作为食品添加剂广泛应用于食品、饮料等。其使用限量各国对于不同的食品有不同的要求。有关食品中苯甲酸、山梨酸的测定方法报道较多,有分光光度法、液相色谱法、薄层色谱法及气相色谱法。由于气相色谱法较为普及且应用较为方便,通常都采用气相色谱法进行日常分析。
A rapid GC method for determination of benzoic acid and sorbic acid in foods has been developed. The additives in sample were extracted by ether-petroleum ether (4 > 1) with n-undecanoic acid as internal standard and directly injected into DEGS capillary column. The new method is simple, rapid. and efficient. The recoveries were in the range of 93. 9-100. 8% with a coefficient of variation between 3. 8-6. 8% ,the limit of detection was Img/kg of sample for both sorbic acid and benzoic acid. The effect of the operation of evaporating solvent or, recoveries of some other methods has been studied.
出处
《色谱》
CAS
CSCD
北大核心
1992年第4期244-246,239,共4页
Chinese Journal of Chromatography
