气相色谱-质谱同时测定食品包装材料中9种光引发剂  

Simultaneous Determination of Nine Photoinitiators in Food Packaging Materials by GC-MS

作　　者：刘艳[1] 张强[1] 顾华[2] 余肖峰 邵超英[1] 

机构地区：[1]东华大学化学化工与生物工程学院,上海201620 [2]国土资源部上海资源环境监督检测中心,上海200072

出　　处：《分析科学学报》2017年第6期812-816,共5页Journal of Analytical Science

摘　　要：建立了同时测定食品包装材料中二苯甲酮、4-甲基二苯甲酮、4-氯二苯甲酮、1-羟基环己基苯基甲酮、对二甲氨基苯甲酸乙酯、对二甲氨基苯甲酸异辛脂、2-氯硫杂蒽酮、2-异丙基硫杂蒽酮和2,4-二乙基硫杂蒽酮9种光引发剂的气相色谱-质谱法。通过单因素实验和正交试验确定了以15mL二氯甲烷,于40℃下超声提取20min的样品前处理条件。在优化的柱温程序下9种光引发剂目标物获得较好分离,质谱选择离子扫描定量。方法的检出限(S/N=3)为0.7840~7.699μg/L,3种不同标准添加水平下的平均回收率为92.44%~110.6%,相对标准偏差为1.60%~9.46%(n=6)。方法简便、快速、灵敏、准确,可用于食品包装材料中光引发剂的分析监测。A method was developed for the simultaneous determination of the photoinitiators （benzophenone, 4- methyl benzophenone, 4-chloro benzophenone, 1-hydroxycyclohexyl phenyl ketone, ethyl 4-dimethylamino benzoate, 2-ethylhexyl-dimethylamino benzoate, 2-chlorothioxanthone, 2-isopropylthioxanthone, 2, 4-diethyl- 9H-thioxanthen-9-one） in food packaging materials by gas chromatography-mass spectrometry（GC-MS）. The simple factor design and orthogonal design experiments were used for the optimization of ultrasonic extraction method. The compounds were extracted with 15 mL of dichloromethane, at 40 ℃ for 20 min. Temperature gradient was employed in GC separation of the nine PIs and MS measurement was completed by using the selected ion monitoring mode. The limits of detection for the method were 0. 7840-7. 699 μg/L（S/N= 3）. The recoveries of the nine PIs at three spiked levels were between 92.44- 110. 6% with the relative standard deviations of 1.60- 9. 46% （n ---= 6）. The simple, sensitive and accurate method could be applied for the determination of the photoinitiators in food packaging materials.

关 键 词：光引发剂 气相色谱-质谱 正交试验 食品包装材料 

分 类 号：O657.63[理学—分析化学]