丙烯酸树脂食品接触材料中16种单体迁移量的测定及迁移风险考察  

Investigation on Determination of 16 Monomers in Food Contact Materials Made of Acrylic Resin and Their Migration Risk

作　　者：赖莺[1] 林睿[1] 林伟靖[1] 葛秀秀[1] 董清木[1] 黄宗平[1] 

机构地区：[1]厦门出入境检验检疫局技术中心,厦门361026

出　　处：《分析化学》2015年第10期1573-1579,共7页Chinese Journal of Analytical Chemistry

基　　金：福建省自然科学基金项目(No.2011J05030);厦门市科技计划项目(No.3502Z2011015);国家质检总局科研项目(No.2014IK160)资助

摘　　要：建立了丙烯酸树脂塑料食品接触材料中16种残留丙烯酸酯类及苯乙烯类单体迁移量的测定方法。采用水、3%乙酸、20%醇、50%醇、95%醇及异辛烷作为食品模拟物,测定丙烯酸树脂在80℃浸泡8 h后16种单体的迁移量。其中水基食品模拟液（水、20%醇）采用吹扫捕集-气相色谱质谱法检测。选择DB-WAX毛细管柱实现了在21 min内同时分离16种单体。结果表明直接进样方法对所测各物质的定量限可达到0.7 mg/L以下,吹扫捕集进样的定量限可达到0.2μg/L以下。在3个添加水平下,平均回收率在80.1%~97.5%之间。方法的灵敏度、回收率高、选择性好,能满足实际工作的要求。对阳性样品迁移风险考察结果表明：聚甲基丙烯酸甲酯（Polymethylmethacrylate,PMMA）材质样品中甲基丙烯酸甲酯的迁移风险极高,相对于PMMA材质,苯乙烯-甲基丙烯酸甲酯共聚物（Styrene-methyl methacrylate copolymer,MS）材质较为安全。A reliable gas chromatography / mass spectrometric（ GC / MS） method was developed for the determination of migration amounts of 16 monomers including acrylates and styrenes in food contact materials made of acrylic resin. Samples were immersed in food simulants such as water,3%（ W / V） acetic acid,20%（ V/V） ethanol,50%（ V/V） ethanol and 95%（ V/V） ethanol at 80℃ for 8 h. The migration amount in water and 20%（ V / V） ethanol was determined by GC / MS with purging and traping sampling. Results showed that 16 monomers were separated within 21 min on DB-WAX column. The limit of quantification（ LOQ） of the method was below 0. 7 mg / L by direct injection and below 0. 2 μg / L by purging and traping sampling.The recoveries ranged from 80. 1% to 97. 5% with three addition levels. The sensitivity,recovery and selectivity of the method could fully meet the requirements of practical work. The migration risk of methyl methacrylate was very high in samples made of polymethylmethacrylate（ PMMA）. And the samples made of Styrene-methyl methacrylate copolymer（ MS） had lower migration risk than that of PMMA.

关 键 词：食品接触材料 丙烯酸酯 苯乙烯 迁移 气相色谱质谱法 

分 类 号：O657.63[理学—分析化学] TS206.4[理学—化学]