离子迁移谱技术及其在食品检测中的应用

离子迁移谱(ion mobility spectrometry,IMS)技术是一种基于气相中不同离子在电场中迁移速度差异的微量化学物质分析技术。由于其具有原理简单、设备轻便、灵敏度高、选择性强、检测过程快速高效等特点,近年来在危险品检测、食品检测、生物医药分析及环境监测等领域得到了广泛引用。本文对IMS技术的原理和仪器的基本构造进行了简要介绍,并对IMS技术的发展历程进行了梳理概括,着重阐述了国内外IMS技术在食品检测方面的应用进展,对IMS技术在食品贮藏过程监测、加工过程控制、有害物质检测以及风味物质分析等领域的最新研究成果接行了归纳总结。同时通过与常规检测手段的对比,对IMS技术在食品生产质量控制、原材料真伪鉴别和食品原产地鉴定等方面的应用前景作出了展望。

Ion mobility spectrometry and its application in food test

Ion mobility spectrometry (IMS) is a method for characterizing chemical substances on the basis of velocity of gas-phase ions in an electric field. After decades of development, IMS has been widely used in the detection of explosives, drugs and dangerous chemicals and becomes an important technique in global counter-terrorism for its high performance in speed, sensitivity and selectivity. In recent years, IMS gains significant progress in application in other fields such as food industry, bio-pharmaceuticals and environ-mental monitoring. This paper introduced the basic principles of IMS technique and the main components of IMS equipment. With a review of the technique history, this article focused on the application of IMS in food test, including the quality control in food industry, process monitoring during the storage of agricultural or livestock products and characteristic analysis of flavor food. The compatibility with other detecting ap-proaches enabled IMS a broader development in risk control, fraud authentication and origin identification in food industry.