超高压液相色谱法测定食品接触材料印刷油墨中光引发剂

摘要

Objective To establish a method for the determination of photo-initiators in printing ink on the food contact materials by ultra-pressure liquid chromatography-diode array detector (UPLC-DAD). Methods Migration test was studied using 65%of n-hexane as analog simulation of alcohol and fat food respectively, under the temperature of 5℃and 40℃in 240 h. After concentrated, purified, redissolved and filtered, the migrated si-mulating liquid was analyzed by UPLC-DAD. Results The method showed a good linearity over the range of 0.1∼500μg/L, and the detection limit was 0.005μg/dm2. The recoveries were 79.8%∼92.3%. ITX and EHDAB usually appeared together in food contact materials, and its migration levels were 0.11 μg/dm2 and 0.092∼0.37μg/dm2. Conclusion The ultra-pressure liquid chromatography-diode array detector (UPLC-DAD) can be used for the rapid determination of photo-initiators in printing ink on food contact material.%　　目的建立超高压液相色谱-二极管阵列检测器(UPLC-DAD)快速测定食品接触材料表面印刷油墨中光引发剂的分析方法。方法以30余种食品接触材料为原料,采用65%乙醇和正己烷作为食品模拟物模拟含酒精和脂肪食品,分别在5℃和40℃的温度下进行240 h的迁移试验。迁移后的模拟液经浓缩、净化、重新溶解并过滤后直接用UPLC-DAD进行分析。结果线性范围为0.1∼500.0μg/L,检出限为0.005μg/dm2,空白样品的加标回收率为79.8%∼92.3%。ITX和EHDAB在食品接触材料中一般协同出现,其迁移水平分别为0.11μg/dm2和0.092∼0.370μg/dm2。结论超高压液相色谱-二极管阵列检测器(UPLC-DAD)可以快速测定食品接触材料表面印刷油墨中光引发剂。