期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1646, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.chroma.2021.462031
关键词
Oxygenated carbon nanotubes cages; Solid-phase microextraction; GC-MS/MS; Aromatic amines; Food contact materials
资金
- National Nature Sciences Foundation of China [21705026]
- Program for Changjiang Scholars and Innovative Research Team in University of China [IRT15R11]
- Collaborative Innovation Center of Chinese Oolong Tea Industry-Collaborative Innovation Center
- Fuzhou Science and Technology Plan Project [2019-S-66]
A material called oxygenated carbon nanotubes cages (OCNTCs) was prepared for the extraction of aromatic amines (AAs) in food contact materials. This material showed high selectivity for AAs and a sensitive analysis method was developed with low limits of detection and good precision.
In this study, an oxygenated carbon nanotubes cages (OCNTCs) material was prepared by calcinating zeolitic imidazole framework-67 (ZIF-67) and then oxidizing the resulting material. The OCNTCs was used as a high efficient solid-phase microextraction (SPME) coating to extract aromatic amines (AAs). The obtained fiber exhibited high selectivity for AAs over other organic compounds in food contact materials (FCMs) due to matched pore size and abundant oxygen-containing groups. Subsequently, coupled with gas chromatography-tandem mass spectrometry (GC-MS/MS), a sensitive method with low limits of detection (0.1-2.0 ng L-1), wide linear ranges (0.5-500 ng L-1) and good precision (RSDs = 8.6%) was developed for analysis of AAs. The specific migrated AAs from food simulants that prepared by standardized migration and thermal migration test were successfully analysed by this developed method with satisfactory recoveries (81.6% - 118.1%) and precision (RSDs, 2.1-9.5%). The results demonstrated that the prepared OCNTCs-coated fibers displayed excellent extraction performance, suggesting a promising application to investigate the migration behaviors of AAs. (c) 2021 Published by Elsevier B.V.
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