目标物样品的制备在复杂基体分离和测定中是一个极为重要的步骤。近年来,样品制备的发展方向是小型化、自动化和高效化,最近10年出现了填充吸着剂微萃取(Microextraction by packed sorbent,MEPS),这是一种简单的快速在线进样技术,只需要少量样品和少量洗脱溶剂。简单介绍了MEPS技术,包括其构型、应用场合以及所使用的吸着剂。 The preparation of target samples is an extremely important step in the separation and determination of complex matrices. In recent years, the direction of sample preparation has been toward miniaturization, automation and efficiency. In the recent decade, microextraction by packed sorbent (MEPS) has emerged as a simple, rapid on-line injection technique that requires only A small amount of sample and a small amount of eluting solvent. MEPS technology is briefly introduced, including its configuration, application, and sorbent used.