Development of a Novel SPME Coating for Efficient Extraction of Organochlorine Pesticides in Liquid Dairy Products,Journal of Agricultural and Food Chemistry

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Development of a Novel SPME Coating for Efficient Extraction of Organochlorine Pesticides in Liquid Dairy Products
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2024-09-05 , DOI: 10.1021/acs.jafc.4c06215
Sijia Lv ₁ , Cuihong Sun ₂ , Jiamiao Gao ₁ , Xiumin Yang ₁ , Chun Wang ₁ , Zhi Wang ₁

Affiliation

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^–1) 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.

中文翻译：

开发新型固相微萃取涂层，用于高效萃取液体乳制品中的有机氯农药

对乳制品中有机氯农药 (OCP) 残留物进行灵敏而准确的分析是一项重大挑战。在此，合成了一种新型共价有机聚合物 Azo-COP-1，用于增强乳制品中 OCP 的提取。涂有 Azo-COP-1 的固相微萃取纤维通过氢键、卤素键、π-π 堆积和静电相互作用表现出对 OCP 的优异萃取性能。结合气相色谱-电子捕获检测，我们开发了一种简便可靠的方法来检测六种乳制品中的 OCP，且检测限低 (2.0–400 pg g ^–1 ) 和方法回收率高 (82.6–113%)。 Azo-COP-1涂层表现出良好的稳定性和耐久性。结果验证了使用基于Azo-COP-1的SPME提取乳制品样品中OCP残留的可行性，凸显了其在农药残留常规监测和食品安全评估中的潜力。

更新日期：2024-09-05

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