Effect of Humidity on the Reactive Uptake of Ammonia and Dimethylamine by Nitrogen-Containing Secondary Organic Aerosol

This study investigated the uptake of ammonia (NH<sub>3</sub>) by secondary organic aerosol (SOA) particles generated via limonene photooxidation or ozonolysis as well as the uptake of dimethylamine (DMA) by limonene ozonolysis, α-cedrene photooxidation, or toluene photooxidation SOA in...

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Autores principales:	Natalie R. Smith, Julia Montoya-Aguilera, Donald Dabdub, Sergey A. Nizkorodov
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	ammonia dimethylamine aerosol mass spectrometry atmospheric reactive nitrogen species nitrogen-containing organic compounds Meteorology. Climatology QC851-999
Acceso en línea:	https://doaj.org/article/f698f2350184446fa2860aca9ef6e929
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spelling	oai:doaj.org-article:f698f2350184446fa2860aca9ef6e9292021-11-25T16:45:37ZEffect of Humidity on the Reactive Uptake of Ammonia and Dimethylamine by Nitrogen-Containing Secondary Organic Aerosol10.3390/atmos121115022073-4433https://doaj.org/article/f698f2350184446fa2860aca9ef6e9292021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4433/12/11/1502https://doaj.org/toc/2073-4433This study investigated the uptake of ammonia (NH<sub>3</sub>) by secondary organic aerosol (SOA) particles generated via limonene photooxidation or ozonolysis as well as the uptake of dimethylamine (DMA) by limonene ozonolysis, α-cedrene photooxidation, or toluene photooxidation SOA in an environmental chamber between 0–50% relative humidity. In addition to the acid-base equilibrium uptake, NH<sub>3</sub> and DMA can react with SOA carbonyl compounds converting them into nitrogen-containing organic compounds (NOCs). The effective reactive uptake coefficients for the formation of NOCs from ammonia were measured on the order of 10<sup>−5</sup>. The observed DMA reactive uptake coefficients ranged from 10<sup>−5</sup> to 10<sup>−4</sup>. Typically, the reactive uptake coefficient decreased with increasing relative humidity. This is consistent with NOC formation by a condensation reaction between NH<sub>3</sub> or DMA with SOA, which produces water as a product. Ammonia is more abundant in the atmosphere than amines. However, the larger observed reactive uptake coefficient suggests that amine uptake may also be a potential source of organic nitrogen in particulate matter.Natalie R. SmithJulia Montoya-AguileraDonald DabdubSergey A. NizkorodovMDPI AGarticleammoniadimethylamineaerosol mass spectrometryatmospheric reactive nitrogen speciesnitrogen-containing organic compoundsMeteorology. ClimatologyQC851-999ENAtmosphere, Vol 12, Iss 1502, p 1502 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	ammonia dimethylamine aerosol mass spectrometry atmospheric reactive nitrogen species nitrogen-containing organic compounds Meteorology. Climatology QC851-999
spellingShingle	ammonia dimethylamine aerosol mass spectrometry atmospheric reactive nitrogen species nitrogen-containing organic compounds Meteorology. Climatology QC851-999 Natalie R. Smith Julia Montoya-Aguilera Donald Dabdub Sergey A. Nizkorodov Effect of Humidity on the Reactive Uptake of Ammonia and Dimethylamine by Nitrogen-Containing Secondary Organic Aerosol
description	This study investigated the uptake of ammonia (NH<sub>3</sub>) by secondary organic aerosol (SOA) particles generated via limonene photooxidation or ozonolysis as well as the uptake of dimethylamine (DMA) by limonene ozonolysis, α-cedrene photooxidation, or toluene photooxidation SOA in an environmental chamber between 0–50% relative humidity. In addition to the acid-base equilibrium uptake, NH<sub>3</sub> and DMA can react with SOA carbonyl compounds converting them into nitrogen-containing organic compounds (NOCs). The effective reactive uptake coefficients for the formation of NOCs from ammonia were measured on the order of 10<sup>−5</sup>. The observed DMA reactive uptake coefficients ranged from 10<sup>−5</sup> to 10<sup>−4</sup>. Typically, the reactive uptake coefficient decreased with increasing relative humidity. This is consistent with NOC formation by a condensation reaction between NH<sub>3</sub> or DMA with SOA, which produces water as a product. Ammonia is more abundant in the atmosphere than amines. However, the larger observed reactive uptake coefficient suggests that amine uptake may also be a potential source of organic nitrogen in particulate matter.
format	article
author	Natalie R. Smith Julia Montoya-Aguilera Donald Dabdub Sergey A. Nizkorodov
author_facet	Natalie R. Smith Julia Montoya-Aguilera Donald Dabdub Sergey A. Nizkorodov
author_sort	Natalie R. Smith
title	Effect of Humidity on the Reactive Uptake of Ammonia and Dimethylamine by Nitrogen-Containing Secondary Organic Aerosol
title_short	Effect of Humidity on the Reactive Uptake of Ammonia and Dimethylamine by Nitrogen-Containing Secondary Organic Aerosol
title_full	Effect of Humidity on the Reactive Uptake of Ammonia and Dimethylamine by Nitrogen-Containing Secondary Organic Aerosol
title_fullStr	Effect of Humidity on the Reactive Uptake of Ammonia and Dimethylamine by Nitrogen-Containing Secondary Organic Aerosol
title_full_unstemmed	Effect of Humidity on the Reactive Uptake of Ammonia and Dimethylamine by Nitrogen-Containing Secondary Organic Aerosol
title_sort	effect of humidity on the reactive uptake of ammonia and dimethylamine by nitrogen-containing secondary organic aerosol
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f698f2350184446fa2860aca9ef6e929
work_keys_str_mv	AT nataliersmith effectofhumidityonthereactiveuptakeofammoniaanddimethylaminebynitrogencontainingsecondaryorganicaerosol AT juliamontoyaaguilera effectofhumidityonthereactiveuptakeofammoniaanddimethylaminebynitrogencontainingsecondaryorganicaerosol AT donalddabdub effectofhumidityonthereactiveuptakeofammoniaanddimethylaminebynitrogencontainingsecondaryorganicaerosol AT sergeyanizkorodov effectofhumidityonthereactiveuptakeofammoniaanddimethylaminebynitrogencontainingsecondaryorganicaerosol
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Effect of Humidity on the Reactive Uptake of Ammonia and Dimethylamine by Nitrogen-Containing Secondary Organic Aerosol

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