Molecular-scale evidence of aerosol particle formation via sequential addition of hio3
Homogeneous nucleation and subsequent cluster growth leads to the formation of new aerosol particles in the atmosphere(1). The nucleation of sulfuric acid and organic vapours is thought to be responsible for the formation of new particles over continents(1,2), whereas iodine oxide vapours have been...
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Springer Nature
2016
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ftnuigalway:oai:https://researchrepository.universityofgalway.ie:10379/13935 2024-09-30T14:24:05+00:00 Molecular-scale evidence of aerosol particle formation via sequential addition of hio3 Sipilä, Mikko Sarnela, Nina Jokinen, Tuija Henschel, Henning Junninen, Heikki Kontkanen, Jenni Richters, Stefanie Kangasluoma, Juha Franchin, Alessandro Peräkylä, Otso Rissanen, Matti P. Ehn, Mikael Vehkamäki, Hanna Kurten, Theo Berndt, Torsten Petäjä, Tuukka Worsnop, Douglas Ceburnis, Darius Kerminen, Veli-Matti Kulmala, Markku O’Dowd, Colin 2016-08-31 http://hdl.handle.net/10379/13935 https://doi.org/10.13025/27697 https://doi.org/10.1038/nature19314 unknown Springer Nature Nature Sipilä, Mikko; Sarnela, Nina; Jokinen, Tuija; Henschel, Henning; Junninen, Heikki; Kontkanen, Jenni; Richters, Stefanie; Kangasluoma, Juha; Franchin, Alessandro; Peräkylä, Otso; Rissanen, Matti P. Ehn, Mikael; Vehkamäki, Hanna; Kurten, Theo; Berndt, Torsten; Petäjä, Tuukka; Worsnop, Douglas; Ceburnis, Darius; Kerminen, Veli-Matti; Kulmala, Markku; O’Dowd, Colin (2016). Molecular-scale evidence of aerosol particle formation via sequential addition of hio3. Nature 537 (7621), 532-534 0028-0836,1476-4687 http://hdl.handle.net/10379/13935 https://doi.org/10.13025/27697 doi:10.1038/nature19314 Attribution-NonCommercial-NoDerivs 3.0 Ireland https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ marine boundary-layer iodine oxide coastal antarctica formation events sulfuric-acid nucleation emissions chemistry macroalgae precursor Article 2016 ftnuigalway https://doi.org/10.13025/2769710.1038/nature19314 2024-09-17T14:44:30Z Homogeneous nucleation and subsequent cluster growth leads to the formation of new aerosol particles in the atmosphere(1). The nucleation of sulfuric acid and organic vapours is thought to be responsible for the formation of new particles over continents(1,2), whereas iodine oxide vapours have been implicated in particle formation over coastal regions(3-7). The molecular clustering pathways that are involved in atmospheric particle formation have been elucidated in controlled laboratory studies of chemically simple systems(2,8-10), but direct molecular-level observations of nucleation in atmospheric field conditions that involve sulfuric acid, organic or iodine oxide vapours have yet to be reported(11). Here we present field data from Mace Head, Ireland, and supporting data from northern Greenland and Queen Maud Land, Antarctica, that enable us to identify the molecular steps involved in new particle formation in an iodine-rich, coastal atmospheric environment. We find that the formation and initial growth process is almost exclusively driven by iodine oxoacids and iodine oxide vapours, with average oxygen-to-iodine ratios of 2.4 found in the clusters. On the basis of this high ratio, together with the high concentrations of iodic acid (HIO3) observed, we suggest that cluster formation primarily proceeds by sequential addition of HIO3, followed by intracluster restructuring to I2O5 and recycling of water either in the atmosphere or on dehydration. Our study provides ambient atmospheric molecular-level observations of nucleation, supporting the previously suggested role of iodine-containing species in the formation of new aerosol particles(3-7,12-18), and identifies the key nucleating compound. Article in Journal/Newspaper Antarc* Antarctica Greenland Queen Maud Land National University of Ireland (NUI), Galway: ARAN Greenland Mace ENVELOPE(155.883,155.883,-81.417,-81.417) Queen Maud Land ENVELOPE(12.000,12.000,-72.500,-72.500) |
institution |
Open Polar |
collection |
National University of Ireland (NUI), Galway: ARAN |
op_collection_id |
ftnuigalway |
language |
unknown |
topic |
marine boundary-layer iodine oxide coastal antarctica formation events sulfuric-acid nucleation emissions chemistry macroalgae precursor |
spellingShingle |
marine boundary-layer iodine oxide coastal antarctica formation events sulfuric-acid nucleation emissions chemistry macroalgae precursor Sipilä, Mikko Sarnela, Nina Jokinen, Tuija Henschel, Henning Junninen, Heikki Kontkanen, Jenni Richters, Stefanie Kangasluoma, Juha Franchin, Alessandro Peräkylä, Otso Rissanen, Matti P. Ehn, Mikael Vehkamäki, Hanna Kurten, Theo Berndt, Torsten Petäjä, Tuukka Worsnop, Douglas Ceburnis, Darius Kerminen, Veli-Matti Kulmala, Markku O’Dowd, Colin Molecular-scale evidence of aerosol particle formation via sequential addition of hio3 |
topic_facet |
marine boundary-layer iodine oxide coastal antarctica formation events sulfuric-acid nucleation emissions chemistry macroalgae precursor |
description |
Homogeneous nucleation and subsequent cluster growth leads to the formation of new aerosol particles in the atmosphere(1). The nucleation of sulfuric acid and organic vapours is thought to be responsible for the formation of new particles over continents(1,2), whereas iodine oxide vapours have been implicated in particle formation over coastal regions(3-7). The molecular clustering pathways that are involved in atmospheric particle formation have been elucidated in controlled laboratory studies of chemically simple systems(2,8-10), but direct molecular-level observations of nucleation in atmospheric field conditions that involve sulfuric acid, organic or iodine oxide vapours have yet to be reported(11). Here we present field data from Mace Head, Ireland, and supporting data from northern Greenland and Queen Maud Land, Antarctica, that enable us to identify the molecular steps involved in new particle formation in an iodine-rich, coastal atmospheric environment. We find that the formation and initial growth process is almost exclusively driven by iodine oxoacids and iodine oxide vapours, with average oxygen-to-iodine ratios of 2.4 found in the clusters. On the basis of this high ratio, together with the high concentrations of iodic acid (HIO3) observed, we suggest that cluster formation primarily proceeds by sequential addition of HIO3, followed by intracluster restructuring to I2O5 and recycling of water either in the atmosphere or on dehydration. Our study provides ambient atmospheric molecular-level observations of nucleation, supporting the previously suggested role of iodine-containing species in the formation of new aerosol particles(3-7,12-18), and identifies the key nucleating compound. |
format |
Article in Journal/Newspaper |
author |
Sipilä, Mikko Sarnela, Nina Jokinen, Tuija Henschel, Henning Junninen, Heikki Kontkanen, Jenni Richters, Stefanie Kangasluoma, Juha Franchin, Alessandro Peräkylä, Otso Rissanen, Matti P. Ehn, Mikael Vehkamäki, Hanna Kurten, Theo Berndt, Torsten Petäjä, Tuukka Worsnop, Douglas Ceburnis, Darius Kerminen, Veli-Matti Kulmala, Markku O’Dowd, Colin |
author_facet |
Sipilä, Mikko Sarnela, Nina Jokinen, Tuija Henschel, Henning Junninen, Heikki Kontkanen, Jenni Richters, Stefanie Kangasluoma, Juha Franchin, Alessandro Peräkylä, Otso Rissanen, Matti P. Ehn, Mikael Vehkamäki, Hanna Kurten, Theo Berndt, Torsten Petäjä, Tuukka Worsnop, Douglas Ceburnis, Darius Kerminen, Veli-Matti Kulmala, Markku O’Dowd, Colin |
author_sort |
Sipilä, Mikko |
title |
Molecular-scale evidence of aerosol particle formation via sequential addition of hio3 |
title_short |
Molecular-scale evidence of aerosol particle formation via sequential addition of hio3 |
title_full |
Molecular-scale evidence of aerosol particle formation via sequential addition of hio3 |
title_fullStr |
Molecular-scale evidence of aerosol particle formation via sequential addition of hio3 |
title_full_unstemmed |
Molecular-scale evidence of aerosol particle formation via sequential addition of hio3 |
title_sort |
molecular-scale evidence of aerosol particle formation via sequential addition of hio3 |
publisher |
Springer Nature |
publishDate |
2016 |
url |
http://hdl.handle.net/10379/13935 https://doi.org/10.13025/27697 https://doi.org/10.1038/nature19314 |
long_lat |
ENVELOPE(155.883,155.883,-81.417,-81.417) ENVELOPE(12.000,12.000,-72.500,-72.500) |
geographic |
Greenland Mace Queen Maud Land |
geographic_facet |
Greenland Mace Queen Maud Land |
genre |
Antarc* Antarctica Greenland Queen Maud Land |
genre_facet |
Antarc* Antarctica Greenland Queen Maud Land |
op_relation |
Nature Sipilä, Mikko; Sarnela, Nina; Jokinen, Tuija; Henschel, Henning; Junninen, Heikki; Kontkanen, Jenni; Richters, Stefanie; Kangasluoma, Juha; Franchin, Alessandro; Peräkylä, Otso; Rissanen, Matti P. Ehn, Mikael; Vehkamäki, Hanna; Kurten, Theo; Berndt, Torsten; Petäjä, Tuukka; Worsnop, Douglas; Ceburnis, Darius; Kerminen, Veli-Matti; Kulmala, Markku; O’Dowd, Colin (2016). Molecular-scale evidence of aerosol particle formation via sequential addition of hio3. Nature 537 (7621), 532-534 0028-0836,1476-4687 http://hdl.handle.net/10379/13935 https://doi.org/10.13025/27697 doi:10.1038/nature19314 |
op_rights |
Attribution-NonCommercial-NoDerivs 3.0 Ireland https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ |
op_doi |
https://doi.org/10.13025/2769710.1038/nature19314 |
_version_ |
1811639596584271872 |