食品中苯甲酸、山梨酸、糖精钠定量测定采用GB/T5009.28.29-2003国家标准方法,仅适用汽水、果汁类、配制酒,对深色、难溶食品(如酱油、陈皮、果冻、蜜饯、糕点、冷冻饮品等)不适用,原因是前者色素杂峰太多,基线不归,零苯甲酸出峰,造成定量测定结果是真值的1.4倍。难溶食品含有 Determination of benzoic acid, sorbic acid, sodium saccharin in food GB / T5009.28.29-2003 national standard methods, only for soft drinks, fruit juices, preparation of wine, the dark, insoluble foods (such as soy sauce, dried tangerine peel, jelly, candied fruit , Cakes, frozen drinks, etc.) does not apply, because the former is too much pigmentation peaks, the baseline does not return, peak of zero benzoic acid, resulting in quantitative determination of the results of 1.4 times the true value. Poorly soluble foods contain