摘要
对VBL、BA和CBS-X三种常见二苯乙烯型荧光增白剂的荧光光谱进行研究,确定了以VBL为标准,检测日用品中荧光增白剂的定量分析方法.实验结果表明,最佳激发和发射波长分别在350nm,433nm处.在0.002~1.000μg·mL-1的线性范围内标准曲线为F=605.09c-2.4105,R2=0.9985,相对标准偏差为1.7%,方法检出限为0.7ng·mL-1.同时还研究了储存条件对VBL稳定性的影响以及溶剂迁移实验.
The method of ultraviolet light observation is used for preliminary qualitative testing for the fluorescent whitening agents including VBL,BA and CBS.Then VBL is made as a criterion and the fluorescence spectrum of fluorescent whitening agent is studied.The results show that the optimum excitation and emission wavelength are at 350 nm and 433 nm respectively.The standard curve of VBL is linear in the concentration range of 0.002~1.000μg·mL-1,R2= 0.9985,the relative standard deviation is less than 1.7% and the detection limit is 1.7%.Finally,the stability of VBL and migration experiments are studied.
出处
《兰州文理学院学报（自然科学版）》
2015年第5期44-47,共4页
Journal of Lanzhou University of Arts and Science(Natural Sciences)
基金
陕西省教育厅项目(14JK1826)
延安大学校级项目(YDHG2014-02)
关键词
荧光增白剂
荧光分光光度法
日用品
溶剂迁移
fluorescent whitening agents
fluorescence spectrophotometry
commodities
solvent migration
