Department of Toxicology, Advanced Medical and Dental Institute, Universiti Sains Malaysia, 13200 Kepala Batas, Penang, Malaysia.
Department of Chemistry, Faculty of Science, Universiti of Malaya, 50603 Kuala Lumpur, Malaysia.
Food Chem. 2022 Dec 1;396:133670. doi: 10.1016/j.foodchem.2022.133670. Epub 2022 Jul 11.
The current study discussed the use of silicone surfactant-based deep eutectic solvent as a surface modifier for magnetic iron particles (FeO) to produce a novel adsorbent and its application for the extraction of organophosphorus pesticides (OPPs) in vegetable samples. A deep eutectic solvent (DES) was prepared using low toxic and inexpensive substances such as silicone surfactant (SS) and dodecanoic acid (DoAc). This new eco-friendly SS:DoAc based DES was explored as a substitution to traditional organic reagents for surface modification of FeO to increase the adsorption capacity and to reduce the matrix interferences, hazardous waste generation and environmental pollution. The newly synthesized SS:DoAc@FeO adsorbent was successfully characterized and applied in magnetic solid phase extraction (MSPE). Under optimized conditions, the proposed approach exhibited excellent linearity ranging from 0.1 to 200 µg/kg (R ≥ 0.9970), low detection limit (0.03-0.1 µg/kg) and acceptable relative recovery (80-119 %) for the studied OPPs.
本研究探讨了基于硅酮表面活性剂的深共晶溶剂作为磁性铁粒子 (FeO) 的表面改性剂的用途，以制备一种新型吸附剂，并将其应用于蔬菜样品中有机磷农药 (OPPs) 的提取。深共晶溶剂 (DES) 是由低毒、廉价的物质如硅酮表面活性剂 (SS) 和月桂酸 (DoAc) 制备而成的。这种新的环保型 SS:DoAc 基 DES 被探索用作传统有机试剂的替代品，用于 FeO 的表面改性，以增加吸附能力，并减少基质干扰、危险废物产生和环境污染。新合成的 SS:DoAc@FeO 吸附剂被成功地进行了表征，并应用于磁性固相萃取 (MSPE)。在优化条件下，该方法对研究的 OPPs 表现出优异的线性范围 (0.1-200µg/kg，R≥0.9970)、低检测限 (0.03-0.1µg/kg) 和可接受的相对回收率 (80-119%)。
