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引用本文:   张强领, 邹雪, 梁渠, 张亚婷, 易明建, 王鸿梅, 黄超群, 沈成银, 储焰南. 大气挥发性有机物实时在线监测的双极性质子转移反应质谱仪研制. 分析化学, 2018, 46(4): 471-478. doi:  10.11895/j.issn.0253-3820.171234 [复制]

Citation:   ZHANG Qiang-Ling, ZOU Xue, LIANG Qu, ZHANG Ya-Ting, YI Ming-Jian, WANG Hong-Mei, HUANG Chao-Qun, SHEN Cheng-Yin, CHU Yan-Nan. Development of Dipolar Proton Transfer Reaction Mass Spectrometer for Real-time Monitoring of Volatile Organic Compounds in Ambient Air. Chinese Journal of Analytical Chemistry, 2018, 46(4): 471-478. doi: 10.11895/j.issn.0253-3820.171234 [复制]

大气挥发性有机物实时在线监测的双极性质子转移反应质谱仪研制

通讯作者:  沈成银, chyshen@aiofm.ac.cn

收稿日期: 2017-09-06

接受日期: 2017-12-28

出版日期: 2018-04-01

基金项目: 本文系国家重点研发计划项目(No.2016YFC0200200)、国家自然科学基金项目(Nos.21777163,21477132,21577145)和国家科技支撑计划项目(No.2014BAC22B06)资助

Development of Dipolar Proton Transfer Reaction Mass Spectrometer for Real-time Monitoring of Volatile Organic Compounds in Ambient Air

Corresponding author:  SHEN Cheng-Yin, chyshen@aiofm.ac.cn

Received Date:  2017-09-06

Accepted Date:  2017-12-28

Published Date:  2018-04-01

Fund Project:  This work was supported by the National Key R&D Program of China (No.2016YFC0200200), the National Natural Science Foundation of China (Nos.21777163, 21477132, 21577145) and the National Science and Technology Support Program of China (No.2014BAC22B06)

大气中挥发性有机物(VOCs)能参与光化学反应,导致臭氧和气溶胶等二次污染物的产生,实时精准地监测VOCs对于大气污染成因研究具有重要意义。在质子转移反应质谱(PTR-MS)研究基础上,本工作研制一套用于大气VOCs实时在线监测的双极性质子转移反应质谱仪(Dipolar proton transfer reaction mass spectrometer,DP-PTR-MS)。相比单一反应离子H3O+的常规PTR-MS,DP-PTR-MS中有正负3种反应离子(H3O+、OH-、(CH32COH+),可根据实际检测需要选择切换,提高定性能力,并有效扩展检测范围。其中,H3O+反应离子用于检测质子亲和势大于H2O的VOCs;OH-反应离子可与H3O+反应离子配合识别VOCs,还可用于检测CO2等无机物;(CH32COH+反应离子可在排除干扰的情况下准确检测NH3。利用6种标准气体测定DP-PTR-MS检出限和灵敏度,结果表明,DP-PTR-MS对甲苯的检出限为7×10-12V/V),对氨气的灵敏度为126.0 cps/10-9V/V)。利用DP-PTR-MS对合肥市区大气VOCs开展连续78 h实时在线监测验证实验,结果表明,DP-PTR-MS可对大气中10-12V/V)量级VOCs进行长期实时在线监测,可作为大气污染成因研究和痕量VOCs排放监测的重要工具。

关键词:   双极性质子转移反应质谱, 挥发性有机物, 实时, 在线监测
Key words:   Dipolar proton transfer reaction mass spectrometry, Volatile organic compounds, Real-time, On-line monitoring
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大气挥发性有机物实时在线监测的双极性质子转移反应质谱仪研制

张强领, 邹雪, 梁渠, 张亚婷, 易明建, 王鸿梅, 黄超群, 沈成银, 储焰南

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