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.
作者
陈蚕蚕
阿文伟
张敏
董犇
林勤保
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)
出处
《包装工程》
CAS
北大核心
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)。
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
recycled polyvinyl chloride
vinyl chloride
vinylidene chloride
1,1-Dichloroethane
gas chromatography
