摘要
采用沉淀聚合法制备了聚苯乙烯-丙烯酰胺固相萃取材料。制作了固相萃取滤器,将碱性橙从其它人工合成黄色色素中分辨出来。对材料吸附色素的最适pH、吸附选择性、等温吸附及固相萃取滤器重复使用次数等方面进行了实验。结果表明:该材料在pH 6时对碱性橙的吸附效果最好;与日落黄和柠檬黄相比,对于碱性橙有一定的吸附选择性;相比聚苯乙烯和聚酰胺,聚苯乙烯-丙烯酰胺对碱性橙有更高的平衡吸附容量;聚苯乙烯-丙烯酰胺针头滤器使用20次对碱性橙的回收率依然很高,可重复多次使用。
Polystyrene-acrylamide solid phase extraction materials were prepared by precipitation polymerization.A solid phase extraction filter was made to distinguish alkaline orange from other synthetic yellow pigments.The optimum pH for adsorption of pigments,the selectivity of the material for adsorption of pigments,isothermal adsorption and the reused times of solid phase extraction filters were studied.The results showed that the material had the best adsorption effect for alkaline orange at pH 6.Comparing with sunset yellow and lemon yellow,it had better adsorption selectivity for alkaline orange.Polystyrene-acrylamide had higher equilibrium adsorption capacity for basic orange than polystyrene and polyamide.The recovery of the pigment was still very high when the polystyreneacrylamide needle filter could be used at least 20 times for adsorption of alkaline orange.
作者
陈梦婷
汪银娜
易思怡
严恒
谢卫红
CHEN Meng-ting;WANG Yin-na;YI Si-yi;YAN Heng;XIE Wei-hong(College of Biotechnology and Food,Hubei University of Technology,Wuhan 430068;Hubei Provincial Institute for Food Supervision and Test,Wuhan 430075;Hubei Provincial Engineering and Technology Research Center for Food Quality and Safety Test,Wuhan 430075)
出处
《分析试验室》
CAS
CSCD
北大核心
2019年第10期1237-1242,共6页
Chinese Journal of Analysis Laboratory
基金
大学生创新创业训练计划项目(201610500009)
湖北省食品质量安全监督检验研究院科技项目(ZZLX2015015)资助
作者简介
通信作者:谢卫红,E-mail:xiewh@hbut.edu.cn。
