Magnetic covalent organic framework for effective solid-phase extraction and HPLC determination of ochratoxin A in food
LWT, ISSN: 0023-6438, Vol: 179, Page: 114639
2023
- 21Citations
- 21Captures
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Article Description
Ochratoxin A (OTA) exposure in food poses great threat to human health. Magnetic solid phase extraction (MSPE) is an effective sample pre-treatment method based on liquid chromatographic analysis to monitor OTA in food. Herein, magnetic covalent organic frameworks (Fe 3 O 4 @COFs) nanospheres were prepared and well characterized. The efficient and selective extraction of OTA relied on large specific surface and inherent porosity of COFs and the hydrogen bonding, π-π and hydrophobic interactions between COF shell and OTA. The MSPE parameters were investigated in detail. Under the optimal MSPE conditions, the developed Fe 3 O 4 @DhaTab-based-MSPE-HPLC-FLD method for OTA displayed good linearity (0.1-800 μg L −1 ) with R 2 (0.996) and low limit of detection (0.03 μg L −1 ). The proposed method was applied to determine OTA in beer, Chinese Baijiu and vinegar with satisfactory recoveries (72–111%) and relative standard deviations (0.2 to 5.5%).
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0023643823002189; http://dx.doi.org/10.1016/j.lwt.2023.114639; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85149985406&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0023643823002189; https://dx.doi.org/10.1016/j.lwt.2023.114639
Elsevier BV
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