【作者】 王晓兵；

【导师】 卢立新； 王利兵；

【作者基本信息】 江南大学 ， 轻工技术与工程， 2009， 硕士

【摘要】 包装材料中的重金属、有机挥发物及一些持久性有机污染物将通过与食品接触、直接挥发、填埋转化等途径进入大气、水体和土壤中,对人类健康和环境造成潜在危害。包装材料由于在生产过程中要使用大量的粘合剂、油墨和有机溶剂等,残留的挥发性有机物(VOCs)将会所承装的内容物迁移,或缓慢向环境释放。本文的主要针对包装材料(主要为复合包装材料)中残留的VOCs检测出发,采用固相微萃取气相色谱质谱联用方法对OPP/PP、PET/CPE、PET/WMPET/PE、BOPP/PET/AL/PE、PE/PET/PE等5种市售包装材料中残留的VOCs进行分析,采用GC/MS对检出物进行定性,利用二氯甲烷外标法进行定量分析。共检出丙酮、乙酸乙酯、丁酮、异丙醇、甲苯、乙酸、乙酸丁酯、对二甲苯、间二甲苯、2,4-戊二酮、邻二甲苯、正癸烷、苯甲醛和十一烷等4大类14种挥发性有机物。检测方法能够满足包装材料中VOCs残留定量分析的要求。利用本文所建立的分析方法,以色谱谱图中的总峰面积假定作为迁出物总量,分析了不同环境温度和迁移介质温度对包装材料中VOCs迁移量的影响,为包装材料中VOCs扩散系数、迁移模型的建立提供了支持。更多还原

【Abstract】 Heavy metals, volatile organic compounds and some persistent organic pollutants in the packaging materials may migrate into the atmosphere, water system and soil by contacting with food, directly emitting, burying ground and transformation, which will be a great danger to human health and environment. Volatile organic compounds (VOCs) in packaging materials mainly come from the adhesive, printing ink and organic agents used in packaging production and the residual VOCs will immigrate to the inner substances and pollute the environment.This paper is concerned about the residual VOCs in packaging materials of 5 compound materials of OPP/PP, PET/CPE, PET/WMPET/PE, BOPP/PET/AL/PE and PE/PET/PE by SPME-GC/MS. Acetone, ethyl acetate, 2-Butanone, isopropyl alcohol, p-xylene, o-xylene, m-xylene, dimethylbenzene, isobutyl acetate, 2,4-pentandione, decane, benzaldehyde and n-undecane are detected in these five compound packagings. And the detection method can be applied to determine all these 14 VOCs concerned above for different kinds of packaging materials. Using the detection method in this paper, the influences of environmental temperature and medium on immigration of VOCs in the packaging are calculated. These data are a great help to the further research on VOCs immigration coefficient and helpful to build different immigration models.更多还原