测试技术学报2017，Vol.31Issue(4)：304-310,7.DOI:10.3969/j.issn.1671-7449.2017.04.005
用于挥发性有机物检测的二次电喷雾电离-离子迁移率谱系统
Secondary Electrospray Ionization Ion Mobility Spectrometer for VOCs Detection
王禹 1高晓光 2何秀丽 1贾建 1李建平1
作者信息
- 1. 中国科学院电子学研究所 传感技术国家重点实验室, 北京 100190
- 2. 中国科学院大学, 北京 100190
- 折叠
摘要
Abstract
Secondary electrospray ionization (SESI)ion mobility spectrometer (IMS)was applied for detection of acetone, isoprene and ethylbenzene, the representatives of volatile organic compounds (VOCs),which are closely related to disease in breath gas.The SESI source with the direction of the sample gas flow parallel to the ion stream was designed and the ionization efficiency was improved.The stable electrospraying was obtained by the cooling effect of sample gas to electrospraying liquid.The SESI-IMS system was constructed and the effects of parameters such as temperature of ionization region, electrospraying liquid flow rate and sample gas flow rate were analyzed.The 3 times noisebased detection limits of acetone, isoprene and ethylbenzene were calculated to be 38.8 ng/L, 68.9 ng/L and 46.9 ng/L respectively when the conditions of temperature of ionization region is 175 ℃, electrospraying liquid flow rate is 1 μL/min and sample gas flow rate is 200 mL/min.The SESI-IMS system has the potential application for detection of VOCs in breath gas.关键词
二次电喷雾电离/离子迁移率谱/挥发性有机物/呼出气体Key words
secondary electrospray ionization/ion mobility spectrometry/volatile organic compounds/breath gas分类
信息技术与安全科学引用本文复制引用
王禹,高晓光,何秀丽,贾建,李建平..用于挥发性有机物检测的二次电喷雾电离-离子迁移率谱系统[J].测试技术学报,2017,31(4):304-310,7.
