School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, PR China.
School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, PR China.
Food Chem. 2020 Mar 30;309:125752. doi: 10.1016/j.foodchem.2019.125752. Epub 2019 Oct 21.
In this work, a novel class of eight low viscosity hydrophobic deep eutectic solvents (DESs) has been designed and prepared from two kinds of quaternary ammonium salts and six kinds of water-insoluble fatty alcohols/acids. Several physical properties of these DESs, such as melting point, density and viscosity, have been determined to investigate their adaptability as solvents. Then, such DESs are used as extraction solvents in a vortex-assisted liquid-liquid microextraction for the extraction and preconcentration of phthalate esters (PEs) from water samples, and the content of PEs from food-contacted plastics is then determined by using gas chromatography. It is found that the analytic method developed in this work exhibits wide linear range of 5-1000 µg L, and the limit of detections for target analytes is as low as 1 µg L. Finally, the proposed method has been successfully used for the determination of PEs from food-contacted plastics.
在这项工作中，设计并制备了一类新型的八种低粘度疏水性深共晶溶剂（DES），它们是由两种季铵盐和六种不溶于水的脂肪醇/酸组成的。对这些 DES 的熔点、密度和粘度等物理性质进行了测定，以考察它们作为溶剂的适用性。然后，将这些 DES 用作涡旋辅助液-液微萃取中的萃取溶剂，从水样中萃取和预浓缩邻苯二甲酸酯（PEs），然后使用气相色谱法测定接触食品的塑料中的 PEs 含量。结果表明，本工作建立的分析方法具有较宽的线性范围（5-1000μg/L），目标分析物的检出限低至 1μg/L。最后，该方法成功地用于测定接触食品的塑料中的 PEs。
