液体核磁共振法快速检测食品中的3种食用合成色素  

Rapid determination of 3 edible synthetic pigments in food by ~1H NMR

作　　者：黄文氢[1] 刘静[1] HUANG Wen-qing;LIU Jing(SINOPEC Beijing Research Institute of Chemical Industry, Beijing 100013)

机构地区：[1]中国石化北京化工研究院,北京100013

出　　处：《分析试验室》2018年第7期848-851,共4页Chinese Journal of Analysis Laboratory

摘　　要：建立了液体核磁共振法测定食品中食用合成色素含量的方法。实验以氘代二甲基亚砜为溶剂,以四甲基硅烷为内标,选择H-NMR脉冲程序,延迟时间为12 s,采样次数为16次,选取适宜样品定量峰,方法测定结果误差小于10%,相对标准偏差小于8.2%。实际样品检测结果与国标液相色谱方法相符。A new method for the determination of 3 edible synthetic pigments in food by 1 H NMR was established.-1 H NMR spectra were obtained in dimethylsulphoxide D6 with tetramethylsilane（ TMS） as the internal standard. The delay time and number of scans were set as 12 s and 32,respectively. The standard deviation ratio of this method was lower than 10% and the relative standard deviation（ RSD）was lower than 8. 2%. The determination results were in accordance with those measured by high performance liquid chromatography（ HPLC）.

关 键 词：液体核磁共振法 食用合成色素 食品 

分 类 号：TS207.3[轻工技术与工程—食品科学]