Phenolic-based non-ionic deep eutectic solvent for rapid determination of water soluble neonicotinoid insecticides in tea infusion

• 全文链接

酚基非离子深度共熔剂快速测定茶汤中水溶性新烟碱类杀虫剂

关键词：

来源：

Food Chemistry 期刊

全文链接：

//agri.nais.net.cn/topic/downloadFile/95e1f4a9-fac6-4aa8-8233-fbaf44e4484b

来源地址：

https://www.sciencedirect.com/science/article/pii/S0308814623003540

资源所属：

茶学研究专题

类型：

学术文献

语种：

英语

原文发布日期：

2023-08-01

摘要：

Challenges were raised to established analytical method for monitoring water soluble neonicotinoid insecticide (NEOs) residues in tea infusion. Phenolic-based non-ionic deep eutectic solvent (NIDES) composed by a mixture of DL-menthol and thymol (molar ratio of 1:3) was applied to achieve the determination of selected NEOs. Factors influenced extraction efficiency have been evaluated and molecular dynamics approach was conducted aming to provide a new insight to explain its extraction mechanism. It is found that Boltzmann averaged solvation energy of NEOs was negatively correlated with extraction efficiency. The method validation results indicated good linearities (R2 ≥ 0.99), sensitive LOQs (0.05 μg L-1), high precisions (RSD < 11%) and satisfactory recoveries (57.7%∼98%) at 0.05 μg L−1 ∼ 100 μg L−1. The intake risk of NEOs in tea infusion samples were acceptable which residues in range of 0.1 μg L-1 ∼ 3.5 μg L-1 for thiamethoxam imidacloprid and thiacloprid. This method showed advantages of rapid, green, and easy operation.