中国烟草学报2016，Vol.22Issue(6)：18-24,7.DOI:10.16472/j.chinatobacco.2016.156
芯片级非对称场离子迁移谱技术快速识别不同霉变烟草
Rapid identification of different tobacco mildew through microchip-based field asymmetric ion mobility spectrometry
摘要
Abstract
Microchip-based high-field asymmetric ion mobility spectrometry (FAIMS) technology was used for rapid identification of tobacco mildew.Sample gas was introduced by a dynamic headspace diffusion method.Using FAIMS technology,the sample was tested in positive and negative ion mode under atmospheric conditions with clean air (carrier gas:filtered by activated carbon and molecular sieve).To optimize detection conditions,carrier gas flow rate and sample flow rate were controlled at 2000mL/min and 100 mL/min,respectively.Headspace temperature was controlled at 25℃.Under optimal conditions,recognition rules of the degree of mildewy tobacco were established according to identification points.Identification points included three variables of the compensation voltage (CV),electric field (DF) strength and ionic current value (ICV).Characteristic substances of different mildewy tobacco were analyzed by TD-GC-MS.There was a significant difference among Ion current value of characteristic peaks for different mildewy tobacco.The recognition rate of this method was more than 90 percent with relative standard deviation (RSD) lower than 5％.Therefore,FAIMS detection technology has a great potential for application in rapid identification of tobacco mildew.关键词
非对称场离子迁移谱/霉变烟草/识别Key words
field asymmetric ion mobility spectrometry/tobacco mildew/identification引用本文复制引用
周沅桢,张强,羊一涛,李灵锋,汪小知..芯片级非对称场离子迁移谱技术快速识别不同霉变烟草[J].中国烟草学报,2016,22(6):18-24,7.基金项目
江苏省基础研究计划(自然科学基金)资助项目“基于MEMS工艺的新型离子源FAIMS技术的研究”(BK20130340) （自然科学基金）
浙江省博士后科研择优资助项目“基于MEMS工艺的新型离子源场强场非对称离子迁移谱的开发和理论研究”(BSH1302040) （BSH1302040）
中国博士后科学基金资助项目“基于碳纳米材料光电效应的新型离子源的研制”(2013M531448) （2013M531448）
