聚丙烯餐盒复用过程中邻苯二甲酸酯类塑化剂和合成酚类抗氧化剂的检测及迁移规律研究  

Study on determination and migration rule of phthalate ester plasticizers and synthetic phenolic antioxidants during the reuse of polypropylene lunch boxes

作　　者：牛建娜 徐慧静 闫茗 何秋菊 王轩 NIU Jian-Na;XU Hui-Jing;YAN Ming;HE Qiu-Ju;WANG Xuan(Tianjin Institute for Food Safety Inspection Technology,Tianjin Key Laboratory of Food Safety Monitoring Technology,Tianjin 300308,China)

机构地区：[1]天津市食品安全检测技术研究院,天津市食品安全监测技术重点实验室,天津300308

出　　处：《食品安全质量检测学报》2024年第12期182-192,共11页Journal of Food Safety and Quality

基　　金：天津市市场监督管理委员会科技项目(2022-W17)。

摘　　要：目的建立气相色谱-质谱法(gas chromatography-mass spectrometry,GC-MS)同时测定聚丙烯(polypropylene,PP)餐盒中邻苯二甲酸酯类塑化剂和合成酚类抗氧化剂含量的分析方法,并研究其在复用过程中向酸性食品模拟物(4%乙酸)、非酸性食品模拟物(10%乙醇、水)以及油脂类食品模拟物(异辛烷、橄榄油)的迁移量。方法PP餐盒经正己烷超声提取,食品模拟物根据其不同的性质选择不同萃取液,液液萃取辅以超声提取,经SH-Rxi-5MS(30 m×0.25 mm,0.25μm)石英毛细管柱分离,单离子监测(single ion monitoring,SIM)模式扫描,外标法定量。结果20种化合物的线性关系在0.01~1.00mg/L范围内表现良好,其相关系数均大于0.99,检出限和定量限分别是0.01~0.02 mg/L和0.03~0.06 mg/L。5种食品模拟物在0.05、0.10和0.50 mg/L3个水平下加标回收率为80.4%~108.4%,相对标准偏差为1.3%~10.6%(n=6)。结论该方法实验过程简便,灵敏度、精密度、回收率高,适用于PP餐盒中邻苯二甲酸酯类塑化剂和合成酚类抗氧化剂含量和迁移量的测定。实验结果可知,PP餐盒在热接触和微波加热的复用过程中均有一定程度的迁移,需要引起重视。Objective To establish a method for the simultaneously determination of the content of phthalate ester plasticizers and synthetic phenolic antioxidants in polypropylene(PP)lunch boxes by gas chromatography-mass spectrometry(GC-MS)method,and study their migration to acidic food simulants(4%acetic acid),non acidic food simulants(10%ethanol,water),and lipid food simulants(isooctane,olive oil)during reuse.Methods The sample of PP lunch boxes ultrasonically extracted by n-hexane,different food simulants according to their different properties choose extraction liquid,liquid-liquid extraction with ultrasonic extraction,compounds separated by SH-Rxi-5MS(30 m×0.25 mm,0.25μm)quartz capillary column,was scanned using single ion monitoring(SIM)mode and quantified through an external standard technique.Results The linear relationships of 20 kinds of compounds were good in the range of 0.01–1.00 mg/L,and the correlation coefficients were all greater than 0.99.The limits of detection and limits of quantitative of the method were 0.01–0.02 mg/L and 0.03–0.06 mg/L,the recoveries of 5 kinds of food simulants,at 0.05,0.10 and 0.50 mg/L,were spiked,ranging from 80.4%to 108.4%,with a relative standard deviation of 1.3%to 10.6%(n=6).Conclusion This method has the advantages of simple experimental process,high sensitivity,precision and recovery,is apt for ascertaining the determination and migration amount of phthalate ester plasticizers and synthetic phenolic antioxidants in PP lunch box.The experimental results show that,PP lunch boxes have a certain degree of migration during the reuse process of thermal contact and microwave heating,which requires attention.

关 键 词：聚丙烯餐盒 邻苯二甲酸酯类塑化剂 合成酚类抗氧化剂 复用过程迁移规律 气相色谱质谱法 

分 类 号：TS201.6[轻工技术与工程—食品科学] O657.63[轻工技术与工程—食品科学与工程]