Effects of SO 2 oxidation on ambient aerosol growth in water and ethanol vapours
Hygroscopicity (i.e. water vapour affinity) of atmospheric aerosol particles is one of the key factors in defining their impacts on climate. Condensation of sulphuric acid onto less hygroscopic particles is expected to increase their hygrocopicity and hence their cloud condensation nuclei formation...
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ftdoajarticles:oai:doaj.org/article:28a12600362b4187a1e870eb96050e49 2023-05-15T15:08:17+02:00 Effects of SO 2 oxidation on ambient aerosol growth in water and ethanol vapours T. Petäjä V.-M. Kerminen K. Hämeri P. Vaattovaara J. Joutsensaari W. Junkermann A. Laaksonen M. Kulmala 2005-01-01T00:00:00Z https://doaj.org/article/28a12600362b4187a1e870eb96050e49 EN eng Copernicus Publications http://www.atmos-chem-phys.net/5/767/2005/acp-5-767-2005.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 https://doaj.org/article/28a12600362b4187a1e870eb96050e49 Atmospheric Chemistry and Physics, Vol 5, Iss 3, Pp 767-779 (2005) Physics QC1-999 Chemistry QD1-999 article 2005 ftdoajarticles 2022-12-31T15:07:47Z Hygroscopicity (i.e. water vapour affinity) of atmospheric aerosol particles is one of the key factors in defining their impacts on climate. Condensation of sulphuric acid onto less hygroscopic particles is expected to increase their hygrocopicity and hence their cloud condensation nuclei formation potential. In this study, differences in the hygroscopic and ethanol uptake properties of ultrafine aerosol particles in the Arctic air masses with a different exposure to anthropogenic sulfur pollution were examined. The main discovery was that Aitken mode particles having been exposed to polluted air were more hygroscopic and less soluble to ethanol than after transport in clean air. This aging process was attributed to sulphur dioxide oxidation and subsequent condensation during the transport of these particle to our measurement site. The hygroscopicity of nucleation mode aerosol particles, on the other hand, was approximately the same in all the cases, being indicative of a relatively similar chemical composition despite the differences in air mass transport routes. These particles had also been produced closer to the observation site typically 3–8 h prior to sampling. Apparently, these particles did not have an opportunity to accumulate sulphuric acid on their way to the site, but instead their chemical composition (hygroscopicity and ethanol solubility) resembled that of particles produced in the local or semi-regional ambient conditions. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Aitken ENVELOPE(-44.516,-44.516,-60.733,-60.733) Arctic |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 T. Petäjä V.-M. Kerminen K. Hämeri P. Vaattovaara J. Joutsensaari W. Junkermann A. Laaksonen M. Kulmala Effects of SO 2 oxidation on ambient aerosol growth in water and ethanol vapours |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Hygroscopicity (i.e. water vapour affinity) of atmospheric aerosol particles is one of the key factors in defining their impacts on climate. Condensation of sulphuric acid onto less hygroscopic particles is expected to increase their hygrocopicity and hence their cloud condensation nuclei formation potential. In this study, differences in the hygroscopic and ethanol uptake properties of ultrafine aerosol particles in the Arctic air masses with a different exposure to anthropogenic sulfur pollution were examined. The main discovery was that Aitken mode particles having been exposed to polluted air were more hygroscopic and less soluble to ethanol than after transport in clean air. This aging process was attributed to sulphur dioxide oxidation and subsequent condensation during the transport of these particle to our measurement site. The hygroscopicity of nucleation mode aerosol particles, on the other hand, was approximately the same in all the cases, being indicative of a relatively similar chemical composition despite the differences in air mass transport routes. These particles had also been produced closer to the observation site typically 3–8 h prior to sampling. Apparently, these particles did not have an opportunity to accumulate sulphuric acid on their way to the site, but instead their chemical composition (hygroscopicity and ethanol solubility) resembled that of particles produced in the local or semi-regional ambient conditions. |
format |
Article in Journal/Newspaper |
author |
T. Petäjä V.-M. Kerminen K. Hämeri P. Vaattovaara J. Joutsensaari W. Junkermann A. Laaksonen M. Kulmala |
author_facet |
T. Petäjä V.-M. Kerminen K. Hämeri P. Vaattovaara J. Joutsensaari W. Junkermann A. Laaksonen M. Kulmala |
author_sort |
T. Petäjä |
title |
Effects of SO 2 oxidation on ambient aerosol growth in water and ethanol vapours |
title_short |
Effects of SO 2 oxidation on ambient aerosol growth in water and ethanol vapours |
title_full |
Effects of SO 2 oxidation on ambient aerosol growth in water and ethanol vapours |
title_fullStr |
Effects of SO 2 oxidation on ambient aerosol growth in water and ethanol vapours |
title_full_unstemmed |
Effects of SO 2 oxidation on ambient aerosol growth in water and ethanol vapours |
title_sort |
effects of so 2 oxidation on ambient aerosol growth in water and ethanol vapours |
publisher |
Copernicus Publications |
publishDate |
2005 |
url |
https://doaj.org/article/28a12600362b4187a1e870eb96050e49 |
long_lat |
ENVELOPE(-44.516,-44.516,-60.733,-60.733) |
geographic |
Aitken Arctic |
geographic_facet |
Aitken Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Atmospheric Chemistry and Physics, Vol 5, Iss 3, Pp 767-779 (2005) |
op_relation |
http://www.atmos-chem-phys.net/5/767/2005/acp-5-767-2005.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 https://doaj.org/article/28a12600362b4187a1e870eb96050e49 |
_version_ |
1766339676262629376 |