AI Article Synopsis
- A novel covalent organic polymer, Azo-COP-1, was created to improve the extraction of organochlorine pesticide (OCP) residues from dairy products.
- The solid phase microextraction (SPME) fiber coated with Azo-COP-1 showed outstanding performance due to multiple interaction mechanisms like hydrogen bonding and π-π stacking.
- The method developed coupled with gas chromatography was effective for detecting OCPs in various dairy products, achieving low detection limits and high recovery rates, indicating its reliability for monitoring pesticide residues and ensuring food safety.
Article Abstract
A sensitive and accurate analysis of organochlorine pesticide (OCP) residues in dairy products poses a significant challenge. Herein, a novel covalent organic polymer, Azo-COP-1, was synthesized for the enhanced extraction of OCPs in dairy products. The solid phase microextraction fiber coated with Azo-COP-1 demonstrated excellent extraction performance for the OCPs via hydrogen bonding, halogen bonding, π-π stacking, and electrostatic interactions. Coupled with gas chromatography-electron capture detection, we developed a facile and reliable method for detecting OCPs in six types of dairy products with low limits of detection (2.0-400 pg g) and high method recoveries (82.6-113%). Azo-COP-1 coatings exhibited good stability and durability. The results verified the feasibility of using Azo-COP-1-based SPME to extract OCP residues in dairy product samples, highlighting its potential for routine monitoring of pesticide residues and food safety assessments.
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| http://dx.doi.org/10.1021/acs.jafc.4c06215 | DOI Listing |
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