超声萃取-高效液相色谱法同时测定进出口食品中常见6种防腐剂

被引:5
作者
林塬
赵涛
张兆辉
机构
[1] 番禺出入境检验检疫局
关键词
RP-HPLC; 超声萃取; 同时测定; 防腐剂; 食品;
D O I
暂无
中图分类号
TS207.3 [食品分析与检验];
学科分类号
083201 ;
摘要
使用超声萃取-反相高效液相色谱(HPLC)技术,建立同时分离和检测食物中苯甲酸、山梨酸、对羟基苯甲酸甲酯、对羟基苯甲酸乙酯、对羟基苯甲酸丙酯和对羟基苯甲酸丁酯6种防腐剂的方法。水-甲醇(5:95,V/V)作为提取溶剂进行超声萃取,采用Supelco Discovery C18反相色谱柱,流动相为乙腈-乙酸铵缓冲溶液(pH4.4)进行梯度洗脱,在1ml/min的流速和254nm的检测波长下14min内6种防腐剂得到良好分离。6种防腐剂线性范围从5μg/ml到100μg/ml,相关系数(r)为0.9997~1.0000。方法的平均回收率为90.1%~106.3%,精密度和稳定性的RSD分别为0.58%~1.79%、0.15%~1.65%,检出限的范围为0.012~0.43μg/ml。本方法的预处理过程简便、快速,应用于30种进出口食品中防腐剂的分析检测,检测结果灵敏、可靠。
引用
收藏
页码:198 / 201
页数:4
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