Estimation of sulfuric acid concentration using ambient ion composition and concentration data obtained with atmospheric pressure interface time-of-flight ion mass spectrometer
Sulfuric acid (H 2 SO 4 , SA) is the key compound in atmospheric new particle formation. Therefore, it is crucial to observe its concentration with sensitive instrumentation, such as chemical ionisation (CI) inlets coupled to atmospheric pressure interface time-of-flight (APi-TOF) mass spectrometers...
Published in: | Atmospheric Measurement Techniques |
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ftcopernicus:oai:publications.copernicus.org:amt97168 2023-05-15T14:02:18+02:00 Estimation of sulfuric acid concentration using ambient ion composition and concentration data obtained with atmospheric pressure interface time-of-flight ion mass spectrometer Beck, Lisa J. Schobesberger, Siegfried Sipilä, Mikko Kerminen, Veli-Matti Kulmala, Markku 2022-03-31 application/pdf https://doi.org/10.5194/amt-15-1957-2022 https://amt.copernicus.org/articles/15/1957/2022/ eng eng doi:10.5194/amt-15-1957-2022 https://amt.copernicus.org/articles/15/1957/2022/ eISSN: 1867-8548 Text 2022 ftcopernicus https://doi.org/10.5194/amt-15-1957-2022 2022-04-04T16:22:16Z Sulfuric acid (H 2 SO 4 , SA) is the key compound in atmospheric new particle formation. Therefore, it is crucial to observe its concentration with sensitive instrumentation, such as chemical ionisation (CI) inlets coupled to atmospheric pressure interface time-of-flight (APi-TOF) mass spectrometers. However, there are environmental conditions for which and physical reasons why chemical ionisation cannot be used, for example in certain remote places or during flight measurements with limitations regarding chemicals. Here, we propose a theoretical method to estimate the SA concentration based on ambient ion composition and concentration measurements that are achieved by APi-TOF alone. We derive a theoretical expression to estimate the SA concentration and validate it with accurate CI-APi-TOF observations. Our validation shows that the developed estimate works well during daytime in a boreal forest ( R 2 =0.85 ); however, it underestimates the SA concentration in, e.g. the Antarctic atmosphere during new particle formation events where the dominating pathway for nucleation involves sulfuric acid and a base ( R 2 =0.48 ). Text Antarc* Antarctic Copernicus Publications: E-Journals Antarctic The Antarctic Atmospheric Measurement Techniques 15 6 1957 1965 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
Sulfuric acid (H 2 SO 4 , SA) is the key compound in atmospheric new particle formation. Therefore, it is crucial to observe its concentration with sensitive instrumentation, such as chemical ionisation (CI) inlets coupled to atmospheric pressure interface time-of-flight (APi-TOF) mass spectrometers. However, there are environmental conditions for which and physical reasons why chemical ionisation cannot be used, for example in certain remote places or during flight measurements with limitations regarding chemicals. Here, we propose a theoretical method to estimate the SA concentration based on ambient ion composition and concentration measurements that are achieved by APi-TOF alone. We derive a theoretical expression to estimate the SA concentration and validate it with accurate CI-APi-TOF observations. Our validation shows that the developed estimate works well during daytime in a boreal forest ( R 2 =0.85 ); however, it underestimates the SA concentration in, e.g. the Antarctic atmosphere during new particle formation events where the dominating pathway for nucleation involves sulfuric acid and a base ( R 2 =0.48 ). |
format |
Text |
author |
Beck, Lisa J. Schobesberger, Siegfried Sipilä, Mikko Kerminen, Veli-Matti Kulmala, Markku |
spellingShingle |
Beck, Lisa J. Schobesberger, Siegfried Sipilä, Mikko Kerminen, Veli-Matti Kulmala, Markku Estimation of sulfuric acid concentration using ambient ion composition and concentration data obtained with atmospheric pressure interface time-of-flight ion mass spectrometer |
author_facet |
Beck, Lisa J. Schobesberger, Siegfried Sipilä, Mikko Kerminen, Veli-Matti Kulmala, Markku |
author_sort |
Beck, Lisa J. |
title |
Estimation of sulfuric acid concentration using ambient ion composition and concentration data obtained with atmospheric pressure interface time-of-flight ion mass spectrometer |
title_short |
Estimation of sulfuric acid concentration using ambient ion composition and concentration data obtained with atmospheric pressure interface time-of-flight ion mass spectrometer |
title_full |
Estimation of sulfuric acid concentration using ambient ion composition and concentration data obtained with atmospheric pressure interface time-of-flight ion mass spectrometer |
title_fullStr |
Estimation of sulfuric acid concentration using ambient ion composition and concentration data obtained with atmospheric pressure interface time-of-flight ion mass spectrometer |
title_full_unstemmed |
Estimation of sulfuric acid concentration using ambient ion composition and concentration data obtained with atmospheric pressure interface time-of-flight ion mass spectrometer |
title_sort |
estimation of sulfuric acid concentration using ambient ion composition and concentration data obtained with atmospheric pressure interface time-of-flight ion mass spectrometer |
publishDate |
2022 |
url |
https://doi.org/10.5194/amt-15-1957-2022 https://amt.copernicus.org/articles/15/1957/2022/ |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
eISSN: 1867-8548 |
op_relation |
doi:10.5194/amt-15-1957-2022 https://amt.copernicus.org/articles/15/1957/2022/ |
op_doi |
https://doi.org/10.5194/amt-15-1957-2022 |
container_title |
Atmospheric Measurement Techniques |
container_volume |
15 |
container_issue |
6 |
container_start_page |
1957 |
op_container_end_page |
1965 |
_version_ |
1766272493101776896 |