As growing concerns on green, cost-effective, and time-saving chemistry analysis methods, deep eutectic solvents (DESs) are considered to be promising green alternatives to conventional solvents in dispersive liquid–liquid microextraction (DLLME) of trace level chemical contaminants in food and water, due to their biodegradability, low cost, and simple preparation. In the past few years, numerous innovative researches have focused on preconcentration of trace level chemical contaminants using DESs as extractant. In this context, this review aims to summarize the updated state-of-the-art effort dedicated to preconcentration of trace level chemical contaminants in food and water sample using DESs as extractants in DLLME. Furthermore, the major impact factors affecting the preconcentration efficiency and process mechanisms are thoroughly analyzed and discussed. Finally, prospects and challenges in application of DESs as solvents in DLLME to enrich trace level chemical contaminants are extensively elucidated and critically reviewed.

随着人们越来越关注绿色，经济高效且省时的化学分析方法，在食品中痕量化学污染物的分散液-液微萃取（DLLME）中，深共晶溶剂（DES）被认为是传统溶剂的绿色替代品。和水，因为它们具有生物可降解性，低成本和简单的制备方法。在过去的几年中，大量创新研究集中在使用DES作为萃取剂对痕量化学污染物进行预浓缩的过程中。在这种情况下，本综述旨在总结最新的最新技术成果，该研究致力于使用DES作为DLLME中的萃取剂对食品和水样品中的痕量化学污染物进行预浓缩。此外，深入分析和讨论了影响预浓缩效率和工艺机制的主要影响因素。最后，广泛阐明并严格审查了将DES作为DLLME中的溶剂来富集痕量化学污染物的前景和挑战。