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题名: Ultrasensitive detection of explosives and chemical warfare agents by low-pressure photoionization mass spectrometry
作者: Sun, Wanqi; Liang, Miao; Li, Zhen; Shu, Jinian; Yang, Bo; Xu, Ce; Zou, Yao
刊名: TALANTA
出版日期: 2016-08-15
卷号: 156, 期号:0, 页码:191-195
关键词: Ultrasensitive detection ; Low-pressure photoionization mass spectrometry ; Explosive ; Chemical warfare agent
DOI: 10.1016/j.talanta.2016.05.025
部门归属: 大气污染控制中心
英文摘要: On-spot monitoring of threat agents needs high sensitive instrument. In this study, a low-pressure photoionization mass spectrometer (LPPI-MS) was employed to detect trace amounts of vapor-phase explosives and chemical warfare agent mimetics under ambient conditions. Under 10-s detection time, the limits of detection of 2,4-dinitrotoluene, nitrotoluene, nitrobenzene, and dimethyl methyl phosphonate were 30, 0.5, 4, and 1 parts per trillion by volume, respectively. As compared to those obtained previously with PI mass spectrometric techniques, an improvement of 3-4 orders of magnitude was achieved. This study indicates that LPPI-MS will open new opportunities for the sensitive detection of explosives and chemical warfare agents. (C) 2016 Elsevier B.V. All rights reserved.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/35771
Appears in Collections:大气污染控制中心_期刊论文

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