Multiple headspace-solid-phase microextraction as a powerful tool for the quantitative determination of volatile radiolysis products in a multilayer food packaging material sterilized with 纬-radiation

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• 作者：Cristiane Patrí ; cia de Oliveira^a ; ^{cristianepatricia@hotmail.com} ; Angel Rodriguez-Lafuente^b ; ^{arodri@unizar.es} ; Nilda de Fá ; tima Ferreira Soares^c ; ^{nfsoares@ufv.br} ; Cristina Nerin^b ; ^{cnerin@unizar.es}
• 关键词：CAS ; chemical abstract service ; CRMs ; certificate reference materials ; DVB ; diviniylbenzene ; EVOH ; ethylene vinyl alcohol ; GC&ndash ; MS ; gas chromatography&ndash ; mass spectrometry ; HSPME ; headspace-solid phase microextraction ; PA ; polyacrilate ; PDMS ; polyd
• 刊名：Journal of Chromatography A
• 出版年：2012
• 期刊代码：47_00219673
• 类别：ch
• 出版时间：29 June, 2012
• 卷：1244
• 期：Complete
• 页码：61-68
• 文件大小：483 K

摘要

A method consisting of multiple headspace solid-phase microextraction followed by gas chromatography-mass spectrometry analysis was developed and used to determine the main volatile radiolysis products formed by 纬-irradiation of flexible multilayer food packaging samples. The developed method allows the use of solid-phase microextraction in the quantification of compounds from plastic solid samples. A screening of volatiles in the 纬-irradiated and non-irradiated films was performed and 29 compounds were identified in the irradiated packaging, 17 of which were absent in the non-irradiated samples. The main volatile radiolysis products identified were: 1,3-di-tert-butylbenzene; 2,6-di-tert-butyl-1,4-benzoquinone; 4-tert-butyl-phenol and the off-odor compounds butanoic acid and valeric acid. These volatile radiolysis compounds were determined with the proposed method and the results are shown and discussed. Solid-liquid extraction and headspace solid-phase microextraction methods were also studied for comparative purposes. The automated solvent-free multiple HSPME technique here presented can be used to quantify the radiolysis compounds in irradiated plastic solid samples in a simple way with the advantages of being free from matrix influence and environmentally friendly.