Contributions to OH reactivity from unexplored volatile organic compounds measured by PTR-ToF-MS - A case study in a suburban forest of the Seoul metropolitan area during the Korea-United States Air Quality Study (KORUS-AQ) 2016
We report OH reactivity observations by a chemical ionization mass spectrometer–comparative reactivity method (CIMS-CRM) instrument in a suburban forest of the Seoul metropolitan area (SMA) during the Korea–United States Air Quality Study (KORUS-AQ 2016) from mid-May to mid-June of 2016. A comprehensive observational suite was deployed to quantify reactive trace gases inside of the forest canopy including a high-resolution proton transfer reaction time-of-flight mass spectrometer (PTR-ToF-MS). An average OH reactivity of 30:75:1 s1 was observed, while the OH reactivity calculated from CO, NOCNO2 (NOx ), ozone (O3), sulfur dioxide (SO2), and 14 volatile organic compounds (VOCs) was 11:81:0 s1. An analysis of 346 peaks from the PTR-ToF-MS accounted for an additional 6:02:2 s1 of the total measured OH reactivity, leaving 42.0% missing OH reactivity. A series of analyses indicate that the missing OH reactivity most likely comes from VOC oxidation products of both biogenic and anthropogenic origin.
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Format: | artículo biblioteca |
Language: | English |
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European Geosciences Union
2021-04-27
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Subjects: | Volatile organic compounds (VOCs), Atmospheric chemistry, Take urgent action to combat climate change and its impacts, |
Online Access: | http://hdl.handle.net/10261/344971 https://api.elsevier.com/content/abstract/scopus_id/85104997595 |
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dig-idaea-es-10261-3449712024-05-16T20:56:43Z Contributions to OH reactivity from unexplored volatile organic compounds measured by PTR-ToF-MS - A case study in a suburban forest of the Seoul metropolitan area during the Korea-United States Air Quality Study (KORUS-AQ) 2016 Sanchez, Dianne Seco, Roger Gu, Dasa Guenther, Alex Mak, John Lee, Youngjae Kim, Danbi Ahn, Joonyoung Blake, Don Herndon, Scott Jeong, Daun T. Sullivan, John McGee, Thomas Park, Rokjin Kim, Saewung Volatile organic compounds (VOCs) Atmospheric chemistry Take urgent action to combat climate change and its impacts We report OH reactivity observations by a chemical ionization mass spectrometer–comparative reactivity method (CIMS-CRM) instrument in a suburban forest of the Seoul metropolitan area (SMA) during the Korea–United States Air Quality Study (KORUS-AQ 2016) from mid-May to mid-June of 2016. A comprehensive observational suite was deployed to quantify reactive trace gases inside of the forest canopy including a high-resolution proton transfer reaction time-of-flight mass spectrometer (PTR-ToF-MS). An average OH reactivity of 30:75:1 s1 was observed, while the OH reactivity calculated from CO, NOCNO2 (NOx ), ozone (O3), sulfur dioxide (SO2), and 14 volatile organic compounds (VOCs) was 11:81:0 s1. An analysis of 346 peaks from the PTR-ToF-MS accounted for an additional 6:02:2 s1 of the total measured OH reactivity, leaving 42.0% missing OH reactivity. A series of analyses indicate that the missing OH reactivity most likely comes from VOC oxidation products of both biogenic and anthropogenic origin. This research has been supported by NASA (grant no. NNX15AT90G), the National Institute of Environmental Research (NIER-RP0219-152) of South Korea, and the Brain Pool Program of the National Research Foundation Korea (NRF) funded by the Ministry of Science and ICT (no. 2020H1D3A2A01060699). Peer reviewed 2024-02-02T07:54:26Z 2024-02-02T07:54:26Z 2021-04-27 artículo http://purl.org/coar/resource_type/c_6501 Atmospheric Chemistry and Physics 21: 6331–6345 (2021) 16807316 http://hdl.handle.net/10261/344971 10.5194/acp-21-6331-2021 2-s2.0-85104997595 https://api.elsevier.com/content/abstract/scopus_id/85104997595 en Atmospheric Chemistry and Physics Publisher's version https://doi.org/10.5194/acp-21-6331-2021 Sí open European Geosciences Union |
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Volatile organic compounds (VOCs) Atmospheric chemistry Take urgent action to combat climate change and its impacts Volatile organic compounds (VOCs) Atmospheric chemistry Take urgent action to combat climate change and its impacts |
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Volatile organic compounds (VOCs) Atmospheric chemistry Take urgent action to combat climate change and its impacts Volatile organic compounds (VOCs) Atmospheric chemistry Take urgent action to combat climate change and its impacts Sanchez, Dianne Seco, Roger Gu, Dasa Guenther, Alex Mak, John Lee, Youngjae Kim, Danbi Ahn, Joonyoung Blake, Don Herndon, Scott Jeong, Daun T. Sullivan, John McGee, Thomas Park, Rokjin Kim, Saewung Contributions to OH reactivity from unexplored volatile organic compounds measured by PTR-ToF-MS - A case study in a suburban forest of the Seoul metropolitan area during the Korea-United States Air Quality Study (KORUS-AQ) 2016 |
description |
We report OH reactivity observations by a chemical ionization mass spectrometer–comparative reactivity method (CIMS-CRM) instrument in a suburban forest of the Seoul metropolitan area (SMA) during the Korea–United States Air Quality Study (KORUS-AQ 2016) from mid-May to mid-June of 2016. A comprehensive observational suite was deployed to quantify reactive trace gases inside of the forest canopy including a high-resolution proton transfer reaction time-of-flight mass spectrometer (PTR-ToF-MS). An average OH reactivity of 30:75:1 s1 was observed, while the OH reactivity calculated from CO, NOCNO2 (NOx ), ozone (O3), sulfur dioxide (SO2), and 14 volatile organic compounds (VOCs) was 11:81:0 s1. An analysis of 346 peaks from the PTR-ToF-MS accounted for an additional 6:02:2 s1 of the total measured OH reactivity, leaving 42.0% missing OH reactivity. A series of analyses indicate that the missing OH reactivity most likely comes from VOC oxidation products of both biogenic and anthropogenic origin. |
format |
artículo |
topic_facet |
Volatile organic compounds (VOCs) Atmospheric chemistry Take urgent action to combat climate change and its impacts |
author |
Sanchez, Dianne Seco, Roger Gu, Dasa Guenther, Alex Mak, John Lee, Youngjae Kim, Danbi Ahn, Joonyoung Blake, Don Herndon, Scott Jeong, Daun T. Sullivan, John McGee, Thomas Park, Rokjin Kim, Saewung |
author_facet |
Sanchez, Dianne Seco, Roger Gu, Dasa Guenther, Alex Mak, John Lee, Youngjae Kim, Danbi Ahn, Joonyoung Blake, Don Herndon, Scott Jeong, Daun T. Sullivan, John McGee, Thomas Park, Rokjin Kim, Saewung |
author_sort |
Sanchez, Dianne |
title |
Contributions to OH reactivity from unexplored volatile organic compounds measured by PTR-ToF-MS - A case study in a suburban forest of the Seoul metropolitan area during the Korea-United States Air Quality Study (KORUS-AQ) 2016 |
title_short |
Contributions to OH reactivity from unexplored volatile organic compounds measured by PTR-ToF-MS - A case study in a suburban forest of the Seoul metropolitan area during the Korea-United States Air Quality Study (KORUS-AQ) 2016 |
title_full |
Contributions to OH reactivity from unexplored volatile organic compounds measured by PTR-ToF-MS - A case study in a suburban forest of the Seoul metropolitan area during the Korea-United States Air Quality Study (KORUS-AQ) 2016 |
title_fullStr |
Contributions to OH reactivity from unexplored volatile organic compounds measured by PTR-ToF-MS - A case study in a suburban forest of the Seoul metropolitan area during the Korea-United States Air Quality Study (KORUS-AQ) 2016 |
title_full_unstemmed |
Contributions to OH reactivity from unexplored volatile organic compounds measured by PTR-ToF-MS - A case study in a suburban forest of the Seoul metropolitan area during the Korea-United States Air Quality Study (KORUS-AQ) 2016 |
title_sort |
contributions to oh reactivity from unexplored volatile organic compounds measured by ptr-tof-ms - a case study in a suburban forest of the seoul metropolitan area during the korea-united states air quality study (korus-aq) 2016 |
publisher |
European Geosciences Union |
publishDate |
2021-04-27 |
url |
http://hdl.handle.net/10261/344971 https://api.elsevier.com/content/abstract/scopus_id/85104997595 |
work_keys_str_mv |
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