Formation of secondary organic aerosols from the ozonolysis of dihydrofurans

In this work we report the study of the ozonolysis of 2,5-dihydrofuran and 2,3-dihydrofuran and the reaction conditions leading to the formation of secondary organic aerosols. The reactions have been carried out in a Teflon chamber filled with synthetic air mixtures at atmospheric pressure and room...

Descripción completa

Detalles Bibliográficos
Autores principales: Diaz de Mera, Yolanda, Aranda, Alfonso, Bracco, Larisa Laura Beatriz, Rodríguez, Diana, Rodríguez, Ana
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Química
Aerosoles
Ozone
Atmospheric conditions
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/87138
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-87138
record_format dspace
spelling I19-R120-10915-871382024-08-15T18:54:47Z http://sedici.unlp.edu.ar/handle/10915/87138 Formation of secondary organic aerosols from the ozonolysis of dihydrofurans Diaz de Mera, Yolanda Aranda, Alfonso Bracco, Larisa Laura Beatriz Rodríguez, Diana Rodríguez, Ana 2017 2019-12-10T15:15:16Z en Química Aerosoles Ozone Atmospheric conditions In this work we report the study of the ozonolysis of 2,5-dihydrofuran and 2,3-dihydrofuran and the reaction conditions leading to the formation of secondary organic aerosols. The reactions have been carried out in a Teflon chamber filled with synthetic air mixtures at atmospheric pressure and room temperature. The ozonolysis only produced particles in the presence of SO2. Rising relative humidity from 0 to 40% had no effect on the production of secondary organic aerosol in the case of 2,5-dihydrofuran, while it reduced the particle number and particle mass concentrations from the 2,3-dihydrofuran ozonolysis. The water-to-SO2 rate constant ratio for the 2,3-dihydrofuran Criegee intermediate was derived from the secondary organic aerosol (SOA) yields in experiments with different relative humidity values, kH2O/kSO2 = (9.8 ± 3.7) × 10-5. The experimental results show that SO3 may not be the only intermediate involved in the formation or growth of new particles in contrast to the data reported for other Criegee intermediate-SO2 reactions. For the studied reactions, SO2 concentrations remained constant during the experiments, behaving as a catalyst in the production of condensable products. Computational calculations also show that the stabilised Criegee intermediates from the ozonolysis reaction of both 2,5-dihydrofuran and 2,3-dihydrofuran may react with SO2, resulting in the regeneration of SO2 and the formation of low-volatility organic acids. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas Articulo Articulo http://creativecommons.org/licenses/by/3.0/ Creative Commons Attribution 3.0 Unported (CC BY 3.0) application/pdf 2347-2357
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Aerosoles
Ozone
Atmospheric conditions
spellingShingle Química
Aerosoles
Ozone
Atmospheric conditions
Diaz de Mera, Yolanda
Aranda, Alfonso
Bracco, Larisa Laura Beatriz
Rodríguez, Diana
Rodríguez, Ana
Formation of secondary organic aerosols from the ozonolysis of dihydrofurans
topic_facet Química
Aerosoles
Ozone
Atmospheric conditions
description In this work we report the study of the ozonolysis of 2,5-dihydrofuran and 2,3-dihydrofuran and the reaction conditions leading to the formation of secondary organic aerosols. The reactions have been carried out in a Teflon chamber filled with synthetic air mixtures at atmospheric pressure and room temperature. The ozonolysis only produced particles in the presence of SO2. Rising relative humidity from 0 to 40% had no effect on the production of secondary organic aerosol in the case of 2,5-dihydrofuran, while it reduced the particle number and particle mass concentrations from the 2,3-dihydrofuran ozonolysis. The water-to-SO2 rate constant ratio for the 2,3-dihydrofuran Criegee intermediate was derived from the secondary organic aerosol (SOA) yields in experiments with different relative humidity values, kH2O/kSO2 = (9.8 ± 3.7) × 10-5. The experimental results show that SO3 may not be the only intermediate involved in the formation or growth of new particles in contrast to the data reported for other Criegee intermediate-SO2 reactions. For the studied reactions, SO2 concentrations remained constant during the experiments, behaving as a catalyst in the production of condensable products. Computational calculations also show that the stabilised Criegee intermediates from the ozonolysis reaction of both 2,5-dihydrofuran and 2,3-dihydrofuran may react with SO2, resulting in the regeneration of SO2 and the formation of low-volatility organic acids.
format Articulo
Articulo
author Diaz de Mera, Yolanda
Aranda, Alfonso
Bracco, Larisa Laura Beatriz
Rodríguez, Diana
Rodríguez, Ana
author_facet Diaz de Mera, Yolanda
Aranda, Alfonso
Bracco, Larisa Laura Beatriz
Rodríguez, Diana
Rodríguez, Ana
author_sort Diaz de Mera, Yolanda
title Formation of secondary organic aerosols from the ozonolysis of dihydrofurans
title_short Formation of secondary organic aerosols from the ozonolysis of dihydrofurans
title_full Formation of secondary organic aerosols from the ozonolysis of dihydrofurans
title_fullStr Formation of secondary organic aerosols from the ozonolysis of dihydrofurans
title_full_unstemmed Formation of secondary organic aerosols from the ozonolysis of dihydrofurans
title_sort formation of secondary organic aerosols from the ozonolysis of dihydrofurans
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/87138
work_keys_str_mv AT diazdemerayolanda formationofsecondaryorganicaerosolsfromtheozonolysisofdihydrofurans
AT arandaalfonso formationofsecondaryorganicaerosolsfromtheozonolysisofdihydrofurans
AT braccolarisalaurabeatriz formationofsecondaryorganicaerosolsfromtheozonolysisofdihydrofurans
AT rodriguezdiana formationofsecondaryorganicaerosolsfromtheozonolysisofdihydrofurans
AT rodriguezana formationofsecondaryorganicaerosolsfromtheozonolysisofdihydrofurans
_version_ 1809234678967697408

Ejemplares similares