On the accuracy of ion measurements using a Neutral cluster and Air Ion Spectrometer
Here, we present a calibration of the Neutral cluster and Air Ion Spectrometer (NAIS, Airel Ltd.) for the size and concentration of ions in the mobility-diameter size-range 0.98-29.1 nm. Previous studies raised accuracy issues in size and concentration determination and highlighted the importance of...
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/165313 2024-01-07T09:42:29+01:00 On the accuracy of ion measurements using a Neutral cluster and Air Ion Spectrometer Wagner, Robert Manninen, Hanna E. Franchin, Alessandro Lehtipalo, Katrianne Mirme, Sander Steiner, Gerhard Petäjä, Tuukka Kulmala, Markku Department of Physics Helsinki Institute of Physics 2016-08-08T07:56:02Z 12 application/pdf http://hdl.handle.net/10138/165313 eng eng Finnish Environment Institute This research was funded by the EC Seventh Framework Programme (Marie Curie Initial Training Network MC-ITN "CLOUD-TRAIN" no. 316662, ERC-Advanced "ATMNUCLE'" grant no. 227463), the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement no. 656994, the Austrian Science Fund FWF (grant no. P27295-N20), and the Academy of Finland Centre of Excellence (grant no. 272041). Wagner , R , Manninen , H E , Franchin , A , Lehtipalo , K , Mirme , S , Steiner , G , Petäjä , T & Kulmala , M 2016 , ' On the accuracy of ion measurements using a Neutral cluster and Air Ion Spectrometer ' , Boreal Environment Research , vol. 21 , no. 3-4 , pp. 230-241 . ORCID: /0000-0002-1660-2706/work/29770894 ORCID: /0000-0001-7365-8020/work/28846668 ORCID: /0000-0002-1881-9044/work/102822805 84971006468 99e18ed0-ec5f-420f-bb57-cf14679f145a http://hdl.handle.net/10138/165313 000378019700004 other openAccess info:eu-repo/semantics/openAccess ATMOSPHERIC AEROSOL NUCLEATION SIZE DISTRIBUTIONS SULFURIC-ACID PARTICLES MOBILITY NAIS NM EVENTS 114 Physical sciences 1172 Environmental sciences Article publishedVersion 2016 ftunivhelsihelda 2023-12-14T00:09:17Z Here, we present a calibration of the Neutral cluster and Air Ion Spectrometer (NAIS, Airel Ltd.) for the size and concentration of ions in the mobility-diameter size-range 0.98-29.1 nm. Previous studies raised accuracy issues in size and concentration determination and highlighted the importance of used data inversion algorithm. Therefore, we investigated the performance of the NAIS by using five inversion methods. The presented results illustrate that the size information given by the NAIS is very accurate, regardless of the version of the data inversion. The number concentrations determined by the NAIS were 15%-30% too low especially at the lower end of the measurement size range (<5 nm), whereas concentrations at diameters 19.6 nm and larger were overestimated by up to 8%. With the correction presented in this study, the uncertainty of the ion concentration measurement of the NAIS can be reduced to less than 10%, allowing the NAIS to be used in quantitative ion cluster studies and more accurate determination of formation and growth rates. Peer reviewed Article in Journal/Newspaper Boreal Environment Research HELDA – University of Helsinki Open Repository |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
ATMOSPHERIC AEROSOL NUCLEATION SIZE DISTRIBUTIONS SULFURIC-ACID PARTICLES MOBILITY NAIS NM EVENTS 114 Physical sciences 1172 Environmental sciences |
spellingShingle |
ATMOSPHERIC AEROSOL NUCLEATION SIZE DISTRIBUTIONS SULFURIC-ACID PARTICLES MOBILITY NAIS NM EVENTS 114 Physical sciences 1172 Environmental sciences Wagner, Robert Manninen, Hanna E. Franchin, Alessandro Lehtipalo, Katrianne Mirme, Sander Steiner, Gerhard Petäjä, Tuukka Kulmala, Markku On the accuracy of ion measurements using a Neutral cluster and Air Ion Spectrometer |
topic_facet |
ATMOSPHERIC AEROSOL NUCLEATION SIZE DISTRIBUTIONS SULFURIC-ACID PARTICLES MOBILITY NAIS NM EVENTS 114 Physical sciences 1172 Environmental sciences |
description |
Here, we present a calibration of the Neutral cluster and Air Ion Spectrometer (NAIS, Airel Ltd.) for the size and concentration of ions in the mobility-diameter size-range 0.98-29.1 nm. Previous studies raised accuracy issues in size and concentration determination and highlighted the importance of used data inversion algorithm. Therefore, we investigated the performance of the NAIS by using five inversion methods. The presented results illustrate that the size information given by the NAIS is very accurate, regardless of the version of the data inversion. The number concentrations determined by the NAIS were 15%-30% too low especially at the lower end of the measurement size range (<5 nm), whereas concentrations at diameters 19.6 nm and larger were overestimated by up to 8%. With the correction presented in this study, the uncertainty of the ion concentration measurement of the NAIS can be reduced to less than 10%, allowing the NAIS to be used in quantitative ion cluster studies and more accurate determination of formation and growth rates. Peer reviewed |
author2 |
Department of Physics Helsinki Institute of Physics |
format |
Article in Journal/Newspaper |
author |
Wagner, Robert Manninen, Hanna E. Franchin, Alessandro Lehtipalo, Katrianne Mirme, Sander Steiner, Gerhard Petäjä, Tuukka Kulmala, Markku |
author_facet |
Wagner, Robert Manninen, Hanna E. Franchin, Alessandro Lehtipalo, Katrianne Mirme, Sander Steiner, Gerhard Petäjä, Tuukka Kulmala, Markku |
author_sort |
Wagner, Robert |
title |
On the accuracy of ion measurements using a Neutral cluster and Air Ion Spectrometer |
title_short |
On the accuracy of ion measurements using a Neutral cluster and Air Ion Spectrometer |
title_full |
On the accuracy of ion measurements using a Neutral cluster and Air Ion Spectrometer |
title_fullStr |
On the accuracy of ion measurements using a Neutral cluster and Air Ion Spectrometer |
title_full_unstemmed |
On the accuracy of ion measurements using a Neutral cluster and Air Ion Spectrometer |
title_sort |
on the accuracy of ion measurements using a neutral cluster and air ion spectrometer |
publisher |
Finnish Environment Institute |
publishDate |
2016 |
url |
http://hdl.handle.net/10138/165313 |
genre |
Boreal Environment Research |
genre_facet |
Boreal Environment Research |
op_relation |
This research was funded by the EC Seventh Framework Programme (Marie Curie Initial Training Network MC-ITN "CLOUD-TRAIN" no. 316662, ERC-Advanced "ATMNUCLE'" grant no. 227463), the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement no. 656994, the Austrian Science Fund FWF (grant no. P27295-N20), and the Academy of Finland Centre of Excellence (grant no. 272041). Wagner , R , Manninen , H E , Franchin , A , Lehtipalo , K , Mirme , S , Steiner , G , Petäjä , T & Kulmala , M 2016 , ' On the accuracy of ion measurements using a Neutral cluster and Air Ion Spectrometer ' , Boreal Environment Research , vol. 21 , no. 3-4 , pp. 230-241 . ORCID: /0000-0002-1660-2706/work/29770894 ORCID: /0000-0001-7365-8020/work/28846668 ORCID: /0000-0002-1881-9044/work/102822805 84971006468 99e18ed0-ec5f-420f-bb57-cf14679f145a http://hdl.handle.net/10138/165313 000378019700004 |
op_rights |
other openAccess info:eu-repo/semantics/openAccess |
_version_ |
1787423466198138880 |