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UPLC-MS/MS法同时测定食品接触用油墨中20种光引发剂的迁移量
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黎梓城,董犇,陈燕芬,钟怀宁,李丹,郑建国,潘静静 广州海关技术中心广东 广州 510623 
基金项目:国家重点研发计划项目(2016YFF0203705);广州海关科研项目(2020GZCK-026,2020GZCK-010)
中文摘要:为评估食品接触用油墨中光引发剂的迁移风险,采用超高效液相色谱-串联质谱(UPLC-MS/MS)建立了同时测定食品接触用油墨中20种光引发剂迁移量的方法。以0.1%(体积分数)甲酸和甲醇为流动相进行梯度洗脱,采用多反应监测模式对目标物的定量离子和定性离子进行监测,检测迁移实验后食品模拟物中的20种光引发剂。结果表明,该方法对20种光引发剂的色谱分离效果良好,各物质在0.02~0.5 mg/L质量浓度范围内线性关系良好,检出限为0.01 mg/kg,定量下限为0.02 mg/kg。加标回收率为87.1%~104%,相对标准偏差(RSD)为2.1%~8.6%,在10款样品中共检出4类光引发剂。该方法简单、灵敏、准确,适用于食品接触用油墨中20种光引发剂迁移量的检测。
中文关键词:光引发剂  迁移量  食品接触材料  超高效液相色谱-串联质谱
 
Simultaneous Determination of the Migration of 20 Photo Initiators in Food Contact Inks by UPLC-MS/MS
Abstract:An ultra-high performance liquid chromatography-tandem mass spectrometry was established for simultaneous determination of the migration of 20 photo initiators in food contact inks in order to assess the migration risk of photo initiators in food contact inks.The sample was separated using a mixture of 0.1%(volume fraction) formic acid and methanol solution as the mobile phase by gradient elution. 20 kinds of photo initiators in the food simulants were detected after the migration experiment,and the quantitative and qualitative ions of the target were monitored in multi-reaction monitoring mode.Results showed that the chromatographic separation effects of this method for the photo initiators were good,and there existed good linear relationships for each substance in the concentration range of 0.02-0.5 mg/L,with their detection limits and quantitation limits of 0.01 mg/kg and 0.02 mg/kg,respectively.The spiked recoveries ranged from 87.1% to 104%,with relative standard deviations(RSD) of 2.1%-8.6%.A total of 4 types of photo initiators were detected in 10 samples.This method is simple,sensitive and accurate,and is suitable for the detection of the migration amount of 20 photo initiators in food contact inks.
Key Words:photo initiator  migration  food contact material  ultra-high performance liquid chromatography-tandem mass spectrometry
引用本文:黎梓城,董犇,陈燕芬,钟怀宁,李丹,郑建国,潘静静.UPLC-MS/MS法同时测定食品接触用油墨中20种光引发剂的迁移量[J].分析测试学报,2021,40(11):1633-1638.
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