分子荧光光谱法测定食品接触材料中荧光增白剂  

Determination of Fluorescent Whitening Agents in Food Contact Materials by Molecular Fluorescence Spectrometry

作　　者：王海涛 曲志勇 王莉 曲霞 

机构地区：[1]烟台出入境检验检疫局,山东烟台264000

出　　处：《中国无机分析化学》2016年第2期4-8,共5页Chinese Journal of Inorganic Analytical Chemistry

基　　金：山东检验检疫局科技计划项目(SK 201315)资助

摘　　要：建立了分子荧光光谱法对荧光增白剂的定性和定量测定方法。对14种荧光增白剂通过进行激发波长和发射波长的扫描确定了其最大激发波长和最大发射波长,可结合进行荧光增白剂定性判断,并以三种常用的二苯乙烯型荧光增白剂VBL、BA、CXT为例,通过其迁移建立了定量测定荧光增白剂含量的方法。结果表明,三种荧光增白剂在0~1.0μg/mL范围内线性关系良好(相关系数r^2>0.999),检出限均为2.3μg/g,加标回收率均为92.9%~106%,相对标准偏差均小于5%,方法能有效满足食品接触材料样品中荧光增白剂的测定。A qualitative and quantitative method were built for the determination of fluorescent whitening agents in food contact materials by molecular fluorescence spectrometry. The maximum excitation wavelength and the maximum emission wavelength of the fourteen fluorescent whitening agents were measured, and the qualitative results were obtained by the fluorescent spectrum. The quantitative determination method for fluorescent whitening agents was achieved by the analysis of the three common used stilbene-based fluorescent whitening agents （VBL, BA and CXT）. The-results showed that the linear range of this method was 0-1.0 μg/mL with a good correlation coefficient （r^2〉0. 999）. The detect limitwas 2.3 μg/g with the recovery of 92.9%-106%. The relative standard deviation （RSD） was less than 5%. The proposed method can satisfy effectively the requirement of the determination of fluorescent whitening agents in food contact materials.

关 键 词：食品接触材料 荧光增白剂 分子荧光光谱法 

分 类 号：O657.39[理学—分析化学] TH744.16[理学—化学]