4 documents found, page 1 of 1
Contribution of coal combustion to black carbon: coupling tracers with the aeth...
Blanco-Alegre, C.; Fialho, P.; Calvo, A. I.; Castro, A.; Coz, E.; Oduber, F.; Prévôt, A. S. H.; Močnik, G.; Alves, C.; Giardi, F.; Pazzi, G.; Fraile, R.Black carbon (BC) aerosol characteristics have been analysed from January 2016 to March 2017 in an urban background area (León, Spain), located in a coal-mining region, where this fuel is commonly used. The monthly and seasonal variations of BC and source contributions were examined. The mean equivalent BC concentration (eBC) during cold and warm months were 1.0±0.5 and 0.6±0.2 μg m-3, respectively. eBC can be ...
Aethalometer measurements in a road tunnel: a step forward in the characterizat...
Blanco-Alegre, C.; Calvo, A. I.; Alves, C.; Fialho, P.; Nunes, T.; Gomes, J.; Castro, A.; Oduber, F.; Coz, E.; Fraile, R.A sampling campaign was conducted in the Liberdade Avenue tunnel (Braga, Portugal) during a week (with 56,000 vehicles) to monitor black carbon (eBC-equivalent black carbon) by means of an Aethalometer AE-31, and gaseous pollutants (CO2, CO, NOx). Inside the tunnel, the mean eBC mass concentration was 21 ± 10 μg m-3, reaching a maximum hourly value of 49.0 μg m-3. An hourly and weekday-weekend study was carried...
Unusual winter Saharan dust intrusions at Northwest Spain: air quality, radiati...
Oduber, F.; Calvo, A. I.; Blanco-Alegre, C.; Castro, A.; Nunes, T.; Alves, C.; Sorribas, M.; Fernández-González, D.; Vega-Maray, A. M.Saharan air masses can transport high amounts of mineral dust particles and biological material to the Iberian Peninsula. During winter, this kind of events is not very frequent and usually does not reach the northwest of the Peninsula. However, between 21 and 22 February 2016 and between 22 and 23 February 2017, two exceptional events were registered in León (Spain), which severely affected air quality. An int...
Particulate emissions from the co-combustion of forest biomass and sewage sludg...
Calvo, A. I.; Tarelho, L. A. C.; Teixeira, E. R.; Alves, C.; Nunes, T.; Duarte, M.; Coz, E.; Custodio, D.; Castro, A.; Artiñano, B.; Fraile, R.In the present study, particulate emissions from the co-combustion of forest biomass residues with sewage sludge in a pilot-scale bubbling fluidised bed combustor were characterised. The combustion flue gas was exhausted to the atmosphere after passing through a cyclone separator. Physical-chemical characteristics of the particles were studied: i) morphology and aerosol size, surface and volume distributions be...