Online measurements of cycloalkanes based on NO<sup>+</sup> chemical ionization in proton transfer reaction time-of-flight mass spectrometry (PTR-ToF-MS)
Abstract + chemical ionization (NO+ PTR-ToF-MS). Cyclic and bicyclic alkanes are ionized with NO+ via hydride ion transfer, leading to major product ions of Cn H2 n - 1 + n H2 n - 3 + n H2 n ⚫ +, and concentrations of 1-alkenes and trans < 5 %, respectively), as a result inducing little interference with cycloalkane detection in the atmosphere. Calibrations of various cycloalkanes show similar sensitivities associated with small humidity dependence. Applying this method, cycloalkanes were successfully measured at an urban site in southern China and during a chassis dynamometer study of vehicular emissions. Concentrations of both cyclic and bicyclic alkanes are significant in urban air and vehicular emissions, with comparable cyclic alkanes / acyclic alkanes ratios between urban air and gasoline vehicles. These results demonstrate that NO+ PTR-ToF-MS provides a new complementary approach for the fast characterization of cycloalkanes in both ambient air and emission sources, which can be helpful to fill the gap in understanding the importance of cycloalkanes in the atmosphere.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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Online measurements of cycloalkanes based on NO+ chemical ionization in proton transfer reaction time-of-flight mass spectrometry (PTR-ToF-MS) ; volume:15 ; number:23 ; year:2022 ; pages:6935-6947 ; extent:13
Atmospheric measurement techniques ; 15, Heft 23 (2022), 6935-6947 (gesamt 13)
- Creator
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Chen, Yubin
Yuan, Bin
Wang, Chaomin
Wang, Sihang
He, Xianjun
Wu, Caihong
Song, Xin
Huangfu, Yibo
Li, Xiao-Bing
Liao, Yijia
Shao, Min
- DOI
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10.5194/amt-15-6935-2022
- URN
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urn:nbn:de:101:1-2022120804374298967031
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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15.08.2025, 7:26 AM CEST
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Associated
- Chen, Yubin
- Yuan, Bin
- Wang, Chaomin
- Wang, Sihang
- He, Xianjun
- Wu, Caihong
- Song, Xin
- Huangfu, Yibo
- Li, Xiao-Bing
- Liao, Yijia
- Shao, Min
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