表面增强拉曼光谱法测定食品接触用塑料材料及制品中4,4'-二氯二苯砜的迁移量  

Determination of 4,4'-Dichlorophenyl Sulfone Migration from Plastic Food Contact Material Products by Surface Enhanced Raman Spectroscopy

作　　者：胡均鹏 奚晓翔 戴航 刘城昊 陈荣桥 梁明 冼燕萍 吴玉銮 侯向昶 张浩和 HU Jun-peng;XI Xiao-xiang;DAI Hang;LIU Cheng-hao;CHEN Rong-qiao;LIANG Ming;XIAN Yan-ping;WU Yu-luan;HOU Xiang-chang;ZHANG Hao-he(Guangzhou Quality Supervision and Testing Institute,Guangzhou City Research Center of Risk Dynamic Detection and Early Warning for Food Safety,Guangzhou City Key Laboratory of Detection Technology for Food Safety,Collaborative Innovation Center for NQI-Quality Safety of Guangzhou,Guangzhou 511447,China)

机构地区：[1]广州质量监督检测研究院,广州市食品安全风险动态监测与预警研究中心,广州市食品安全检测技术重点实验室,广州市NQI-质量安全科技协同创新中心,广东广州511447

出　　处：《分析测试学报》2024年第7期1025-1031,共7页Journal of Instrumental Analysis

基　　金：广州市市场监督管理局科技项目(2022kj02);广州市NQI-质量安全科技协同创新中心(2023B04J0407)。

摘　　要：建立了食品接触用塑料材料及制品中4,4′-二氯二苯砜迁移量的表面增强拉曼光谱测定方法。首先对制备的金纳米颗粒(AuNPs)进行表征,并通过理论计算对4,4′-二氯二苯砜的拉曼特征峰进行归属。随后参照GB 31604.1-2015和GB 5009.156-2016的规定进行食品接触用塑料材料及制品中4,4′-二氯二苯砜的迁移实验,将迁移液与AuNPs混合后进行SERS测试,并采用高效液相色谱法进行验证。4,4′-二氯二苯砜的特征峰(748 cm^(-1))强度与4,4′-二氯二苯砜质量浓度在0.05~10 mg/L范围内呈现良好的线性关系,相关系数为0.9928,回收率为85.2%~93.4%,相对标准偏差为4.2%~6.6%,与HPLC方法结果基本一致。使用所建方法对5个不同品牌聚苯砜奶瓶中的4,4′-二氯二苯砜迁移量进行测定,结果均未检出。该方法具有快速、准确、操作简单等优点,可为食品接触用塑料材料及制品中4,4′-二氯二苯砜的检测提供技术参考。Surface enhanced Raman spectroscopy(SERS)was used to detect the migration of 4,4'-di⁃chlorophenyl sulfone from plastic food contact materials.Au nanoparticles were prepared for SERS substrate and characterized,then the Raman characteristic peaks of 4,4'-dichlorophenyl sulfone were assigned by theoretical calculation.The migration behavior of 4,4'-dichlorophenyl sulfone in plastic food contact material products was carried out according to the GB 31604.1-2015 and GB 5009.156-2016.The obtained solution was passed through a 0.22μm filter membrane,and mixed with AuNPs to perform SERS test,and the results were validated by high performance liquid chroma⁃tography(HPLC).The intensity of the characteristic peak(748 cm^(-1))of 4,4'-dichlorophenyl sulfone showed a good linear relationship with the mass concentration of 4,4'-dichlorophenyl sulfone in the range of 0.05-10 mg/L,and the correlation coefficient was 0.9928,the recoveries of SERS method were 85.2%-93.4%with the relative deviations of 4.2%-6.6%,meanwhile,these results were in good agreement with the HPLC.The proposed method was applied to the determination of 4,4'-di⁃chlorophenyl sulfone in 5 brands of polyphenylene sulfone(PPSU)milk bottles.This method is rapid,accurate and user friendly,and provides a technical reference for the determination of 4,4'-dichlo⁃rophenyl sulfone in food contact materials and products.

关 键 词：表面增强拉曼光谱 4 4′-二氯二苯砜 金纳米颗粒 食品接触用塑料材料及制品 迁移量 

分 类 号：O657.3[理学—分析化学] TQ328.4[理学—化学]