Abstract：
:The development of sensitive method for analysis ofpesticide residue is of great significance to ensure food safety and promote globalization of food trade. An original method was proposed for analysis of phenoxy carboxylic acids (PCAs) pesticide in plant-derived food. To concentrate trace PCAs, the TAPT-DHTA-COF was fabricated by a facile room-temperature method and utilized as the solid phase extraction cartridge packing. The TAPT-DHTA-COF exhibited excellent adsorption capacity and recyclability towards PCAs. Theoretical simulation indicated that the adsorption of PCAs onto the TAPT-DHTA-COF was driven by hydrogen bond, halogen bond and π-π interaction. Using liquid chromatography tandem mass spectrometry for detection, good linearity ranged from 0.10 to 40 ng·g-1 and low limits of detection varied from 0.007 to 0.030 ng·g-1 were achieved for PCAs in rice, apple and greengrocery. The recoveries of PCAs from the spiked samples ranged from 81.2% to 107%. The reliability was verified by the accurate determination of certified reference materials.
journal_name
Food Chemjournal_title
Food chemistryauthors
Xu G,Hou L,Li B,Wang X,Liu L,Li N,Wang ML,Zhao RSdoi
10.1016/j.foodchem.2020.128749subject
Has Abstractpub_date
2020-12-01 00:00:00pages
128749eissn
0308-8146issn
1873-7072pii
S0308-8146(20)32611-Xjournal_volume
345pub_type
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