Development of a Novel SPME Coating for Efficient Extraction of Organochlorine Pesticides in Liquid Dairy Products
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<sup>-1</sup>) 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.
Authors
- Cuihong Sun (ORCID: https://orcid.org/0000-0002-6135-5062)
- Chun Wang (ORCID: https://orcid.org/0000-0002-9366-3668)
- Zhi Wang (ORCID: https://orcid.org/0000-0002-4459-6462)
- Xiumin Yang (ORCID: https://orcid.org/0000-0003-4674-3136)
- Jiamiao Gao
- Sijia Lv
Institutions
- Hebei Agricultural University (CN)
- Shijiazhuang University (CN)
Publication Details
- Journal
- Journal of Agricultural and Food Chemistry
- Published
- 2024-09-06
- DOI
- https://doi.org/10.1021/acs.jafc.4c06215
- Citations
- 8
- Primary Topic
- Analytical chemistry methods development
- Type
- article
- Field-Weighted Citation Impact
- 1.89
Funders
- Natural Science Foundation of Hebei Province