针阱微萃取技术的研究与应用进展

随着检测需求的提高与分析技术的发展,简单、自动化、环保与小型化的微型样品前处理技术越来越受到关注。针阱微萃取(NTME)是在固相微萃取(SPME)技术的理论基础上发展起来的一种新型微型萃取技术,其萃取装置将吸附剂填充到不锈钢针内制得,可避免固相微萃取纤维易碎及涂层脱落的问题,而且通过动态萃取,可使目标物被彻底萃取,具有更好的耐用性和富集能力。近年NTME结合气相色谱法在挥发性和半挥发性有机污染物分析中获得广泛应用,已有诸多关于NTME的研究被报道。吸附剂是影响NTME萃取性能的核心,本文简要概述了近年NTME的吸附剂种类,并综述了其在环境、食品、生物领域的应用进展。

Research and Application Progress of Needle Trap Microextraction Technology

With the improvement of detection demand and the development of analytical technique, the micro-sample pretreatment technology with simplicity, automation, environmental friendliness and miniaturization has attracted more and more attention. Needle trap microextraction (NTME) is a new microextraction technology developed based on solid phase microextraction (SPME).Its extraction device was prepared with the adsorbent packed into the stainless steel needle, which can avoid the problem of fiber fragility and coating loss in the SPME. Moreover, the analytes can be extracted thoroughly by dynamic extraction in NTME, which has better durability and enrichment ability. In recent years, NTME combined with gas chromatography has been widely used to analyze volatile and semi-volatile organic pollutants, and many studies on NTME have been reported. Adsorbents are the core factors affecting the extraction performance of NTME. This paper briefly summarizes the types of adsorbents for NTME in recent years and outlines the progress of their applications in the fields of environment, food, and biology.