Journal
FOOD CHEMISTRY
Volume 256, Issue -, Pages 358-366Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2018.02.136
Keywords
Magnetic solid-phase extraction; Magnetic zeolitic imazolate framework-8; High performance liquid chromatography; Plastic packaging; Polymer additives; Food safety
Funding
- National Key Research and Development Program of China [2017YFF0207800]
- National Natural Science Foundation of China (NSFC) [21075007]
- Program for New Century Excellent Talents in University [NCET-11-0563]
- Beijing Nova Program Interdisciplinary Cooperation Project [Z161100004916045]
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In this study, magnetic zeolitic imazolate framework-8 (Fe3O4@ZIF-8) was successfully synthesized by a typical hydrothermal method. The facile magnetic solid-phase extraction (MSPE) based on Fe3O4@ZIF-8 was proposed for concentrating polymer additives (antioxidants and ultraviolet absorbers). The conditions of MSPE process were optimized. An analytical method of magnetic solid-phase extraction followed by high performance liquid chromatography (MSPE-HPLC) was successfully established for the simultaneous determination of seven polymer additives in drinks and foods packed with plastic. The established method showed good precision, reproducibility, stability, and accuracy with the low limits of detection (0.03-0.15 ng/mL) and limits of quantification (0.08-0.50 ng/mL). The results of this study indicated the Fe3O4@ZIF-8 coupled with HPLC provided an efficient enrichment and determination method for polymer additives in drinks and foods.
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