GC法测定食品接触用再生PVC中氯乙烯类化合物的迁移量  

Determination of Migration of Vinyl Chloride Compounds in Food Contact Recycled Polyvinyl Chloride Materials by Gas Chromatography

作　　者：陈蚕蚕 阿文伟 张敏 董犇 林勤保[1] 李丹 钟怀宁 CHEN Can-can;A Wen-wei;ZHANG Min;DONG Ben;LIN Qin-bao;LI Dan;ZHONG Huai-ning(Key Laboratory of Product Packaging and Logistics,College of Packaging Engineering,Jinan University,Guangdong Zhuhai 519070,China;National Key Laboratory of Food Contact Materials Testing(Guangdong),Guangzhou Customs District Technology Center,Guangzhou 510623,China;Nanjing Customs Testing Center for Dangerous Goods and Packaging,Jiangsu Changzhou 213022,China)

机构地区：[1]暨南大学包装工程学院,广东普通高校产品包装与物流重点实验室,广东珠海519070 [2]广州海关技术中心,国家食品接触材料检测重点实验室(广东),广州510623 [3]南京海关危险货物与包装检测中心,江苏常州213022

出　　处：《包装工程》2023年第19期9-14,共6页Packaging Engineering

基　　金：国家重点研发计划项目(2022YFF0607202);国家自然科学基金青年基金项目(42207550)。

摘　　要：目的 有效考察食品接触用再生聚氯乙烯类材料中氯乙烯、1,1-二氯乙烯和1,1-二氯乙烷的迁移风险。方法 建立测定食品接触用再生聚氯乙烯类材料中氯乙烯、1,1-二氯乙烯和1,1-二氯乙烷在水、酸性、含乙醇、橄榄油和化学替代溶剂中迁移量的气相色谱法。采用DB-624(60 m×250μm×1.4μm)毛细管柱对迁移实验后的3种物质进行组分分离,用电子捕获检测器(ECD)进行检测。结果 氯乙烯、1,1-二氯乙烯和1,1-二氯乙烷的色谱分离效果较好,在0.005~0.05 mg/kg内线性关系良好,检出限为0.001 mg/kg,定量限为0.005 mg/kg。当添加量为0.005、0.01和0.02 mg/kg时,3种物质的加标回收率为94.8%~108%,相对标准偏差(n=6)为0.0%~9.0%,均低于10%。结论 该方法具有较好的精密度和准确度,可用于食品接触用再生聚氯乙烯类材料中氯乙烯、1,1-二氯乙烯和1,1-二氯乙烷迁移量的测定。The work aims to evaluate the migration risk of vinyl chloride,vinylidene chloride and 1,1-dichloroethane from food contact recycled polyvinyl chloride materials.A gas chromatography method was developed to determine the migration of vinyl chloride,vinylidene chloride and 1,1-dichloroethane in food contact recycled polyvinyl chloride mate-rials in water,acid,ethanol,olive oil and chemical alternative solvents.The three substances were separated on a DB-624(60 m×250μm×1.4μm)capillary column,and detected with an electrical conductivity detector(ECD).Results showed that vinyl chloride,vinylidene chloride and 1,1-dichloroethane had good chromatographic separation effect and there were good linear relationships for the analytes in the range of 0.005-0.05 mg/kg,with a detection limit of 0.001 mg/kg and a quantitation limit of 0.005 mg/kg.When the addition amounts were 0.005 mg/kg,0.01 mg/kg and 0.02 mg/kg,the recove-ries ranged from 94.8%to 108%,with the relative standard deviations(n=6)of 0.0%-9.0%which was lower than 10%.With high accuracy and good precision,the established method could be used to determine the migration of vinyl chloride,vinylidene chloride and 1,1-dichloroethane in food contact recycled polyvinyl chloride materials.

关 键 词：再生聚氯乙烯 氯乙烯 1 1-二氯乙烯 1 1-二氯乙烷 气相色谱 

分 类 号：TS206.4[轻工技术与工程—食品科学]