SOA formation in a photoreactor from a mixture of organic gases and HONO for different experimental conditions

Vivanco, Marta G.; Santiago, Manuel; Martínez-Tarifa, Adela; Borrás, Esther; Ródenas, Milagros; García-Diego, Cristina; Sánchez, Mónica Llano

doi:10.1016/j.atmosenv.2010.09.059

Cited by 30 publications

(18 citation statements)

References 41 publications

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“…The nitrate quantities detected by ion chromatography are in the same range as those presented in Vivanco et al (2011). Again, sulfate content was negligible in the experiments with no SO 2 (20090623, 20091027 and 20091106).…”

Section: Inorganic Contentsupporting

confidence: 66%

“…These techniques were described in Vivanco et al (2011). For the monitoring of the gas phase, a gas chromatograph (GC), a gas chromatograph coupled to a mass spectrometer (GCMS) and an infrared spectrometer (FTIR) were used, together with several monitors.…”

Section: Analytical Instrumentationmentioning

confidence: 99%

“…Finally, considering that soluble sulphates and nitrates are the most relevant inorganic compounds, some filters were analyzed to discount the inorganic aerosol contribution using ion chromatography (Vivanco et al, 2011). Ammonium (NH 4 + ) content was also determined in these experiments with a Dionex DX-500.…”

Section: Analytical Instrumentationmentioning

confidence: 99%

“…Aerosol yields (Table IV) were calculated following the procedure presented in Vivanco et al (2011), but including wall-loss corrections. Since the yield values presented in Vivanco et al (2011) were not corrected for losses, they were also recalculated here, though only small differences were found.…”

Section: Soa Concentration and Yieldmentioning

confidence: 99%

“…In Vivanco et al (2011) we presented the results of ten photooxidation experiments performed in the European Photorreactor (EUPHORE) outdoor chamber (CEAM, Valencia, Spain) in order to study SOA formation under different VOCs initial conditions. Those experiments were performed by introducing a mixture of toluene (TOL), 1,3,5 trimethylbenzene (TMB), o-xylene (OXYL), octane (OCT) and mixtures of isoprene (ISO), limonene (LIM) and a-pinene (APIN) into the EUPHORE photoreactor.…”

Section: Introductionmentioning

confidence: 99%

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Experimental data on SOA formation from mixtures of anthropogenic and biogenic organic compounds

Vivanco¹,

Santiago²,

Sánchez³

et al. 2013

Atmósfera

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RESUMENLos aerosoles orgánicos secundarios (AOS) constituyen una fracción de las partículas atmosféricas. Este tipo de partículas se forman como consecuencia de la reacción de oxidación de ciertos gases orgánicos, lo que conduce a la formación de compuestos de baja volatilidad. Del mismo modo que para otros contaminantes atmosféricos, los modelos de calidad del aire permiten la simulación de partículas, una herramienta muy útil en tareas de gestión de la calidad del aire. Sin embargo, el uso adecuado de estos modelos debe basarse en la validación de su capacidad para reproducir las concentraciones observadas. Las estaciones de monitoreo de la calidad del aire registran información sobre una amplia variedad de contaminantes atmosféricos. Desafortunadamente, no se dispone habitualmente de medidas de AOS, ya que la instrumentación que se tiene en dichas redes de monitoreo no permite la diferenciación de las fuentes primarias y secundarias de los aerosoles orgánicos. Este documento presenta una serie de experimentos de fotooxidación realizados en las cámaras de simulación del Fotorreactor Europeo (CEAM, España) en diferentes condiciones experimentales con objeto de obtener datos sobre la formación de AOS. El uso de este tipo de cámaras permite aislar los procesos químicos y de formación de aerosoles, por lo que los datos presentados en este estudio tienen un considerable valor para propósitos de evaluación de modelos de formación de AOS, al igual que para el estudio del comportamiento de este tipo de partículas. ABSTRACTSecondary organic aerosols (SOA) constitute a significant fraction of the atmospheric particulate matter. Theses particles are formed as a consequence of the oxidation reaction of certain organic gases that leads to the formation of low-volatility compounds. As for other pollutants, air quality models allow the simulation of particle levels and thus models constitute a powerful tool in air quality management. Nevertheless, the Atmósfera 26(1), 59-73 (2013) 60 M. G. Vivanco et al. accepted use of models must be based on the validation of its capacity to reproduce observed concentrations. Air monitoring sites provide measured information of a large variety of ambient pollutants. Unfortunately, measurements on SOA are not normally available, as current monitoring networks do not include instrumentation to distinguish primary from secondary sources of organic carbonaceous aerosol. This paper presents a set of photooxidation experiments performed in the European Photorreactor (EUPHORE) smog chamber (CEAM, Spain) under different experimental conditions to investigate SOA formation. The use of chambers allows the isolation of atmospheric chemistry and aerosol formation processes. Thus, although these measurements were obtained at initial precursor concentrations higher than those in atmospheric conditions, they constitute a valuable set of information for SOA model evaluation purposes.

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Section: Inorganic Contentsupporting

confidence: 66%

Section: Analytical Instrumentationmentioning

confidence: 99%

Section: Analytical Instrumentationmentioning

confidence: 99%

Section: Soa Concentration and Yieldmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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