Application of a Self-developed Proton Transfer Reaction- Mass Spectrometer to On-line Monitoring Trace Volatile Organic Compounds in Ambient Air
查看参考文献24篇
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文摘
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Real-time and on-line monitoring volatile organic compounds(VOCs) are valuable for real-time evaluating air quality and monitoring the key source of pollution. A self-developed proton transfer reaction-mass spectrometer(PTR-MS) was constructed and applied to on-line monitoring trace VOCs in ambient air in Hefei, China. With the help of a self-developed catalytic converter, the background signal of the instrument was detected and the stability of the instrument was evaluated. The relative standard deviation of signal at m/z 21 was only 0.74% and the detection limit of PTR-MS was 97 part per trillion(97×10~(–12), volume ratio). As a case of the air monitoring in Hefei, the ambient air at Dongpu reservoir spot was on-line monitored for 13 d with our self-developed PTR-MS. Meanwhile, a solid-phase micro-extraction(SPME) technique coupled to gas chromatography-mass spectrometry/mass spectrometry (GC-MS/MS) was also used for the off-line detection of the air. The results show that our self-developed PTR-MS can be used for the on-line and long-term monitoring of VOCs in air at part per trillion level, and the change trend of VOCs concentration monitored with PTR-MS was consistent with that detected with the conventional SPME-GC-MS. This self-developed PTR-MS can fully satisfy the requirements of air quality monitoring and real-time monitoring of the key pollution sources. |
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来源
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Chemical Research in Chinese Universities
,2016,32(4):565-569 【核心库】
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DOI
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10.1007/s40242-016-5462-6
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关键词
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Proton transfer reaction-mass spectrometry
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Volatile organic compound(VOC)
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On-line monitoring
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地址
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1.
Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031
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Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, 230031
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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1005-9040 |
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学科
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化学 |
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基金
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国家自然科学基金
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国家科技攻关计划项目
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the National Key Research Program of China
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the Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology of China
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the Functional Development Program of Instrument and Equipment in Chinese Academy of Sciences
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文献收藏号
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CSCD:5775831
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