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）.
作者
黄文氢
刘静
HUANG Wen-qing;LIU Jing(SINOPEC Beijing Research Institute of Chemical Industry, Beijing 100013)
出处
《分析试验室》
CAS
CSCD
北大核心
2018年第7期848-851,共4页
Chinese Journal of Analysis Laboratory
作者简介
通信作者:刘静,E-mail:liuj.bjhy@sinopec.com
