RT info:eu-repo/semantics/article
T1 Aethalometer measurements in a road tunnel: A step forward in the characterization of black carbon emissions from traffic
A1 Blanco Alegre, Carlos del
A1 Calvo Gordaliza, Ana Isabel
A1 Alves, Célia
A1 Fialho, Paulo Sousa
A1 Nunes, Teresa Filomena Vieira
AD  1958-
A1 Gomes, Joana
A1 Castro Izquierdo, Amaya
A1 Oduber Pérez, Fernanda Isabel
A1 Coz Diego, Esther
A1 Fraile Laiz, Roberto
A2 Fisica Aplicada
K1 Biología
K1 Física
K1 Meteorología
K1 Absorption Ångström exponent
K1 Aethalometer
K1 Black carbon
K1 Emission factors
K1 Pollutant relationships
K1 Vehicle exhaust emissions
K1 3308 Ingeniería y Tecnología del Medio Ambiente
K1 2210 Química Física
K1 2509.02 Contaminación Atmosférica
AB [EN] 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 out. Regarding the Absorption Ångström exponent (AAE), a mean value of 0.97 ± 0.10 was obtained, for a source of practically pure traffic. There was a positive significant correlation between eBC and the number of light vehicles (r = 0.47; p < 0.001) and between eBC and the gaseous emissions: CO (r = 0.67; p < 0.001), CO2 (r = 0.71; p < 0.001), NO (r = 0.63; p < 0.001) and NO2 (r = 0.70; p < 0.001). The mean black carbon emission factors (EFBC) inside the tunnel were 0.31 ± 0.08 g (kg fuel)−1 and 0.11 ± 0.08 mg veh−1 km−1, similar to those found in other studies for gasoline and diesel vehicles in road tunnels
PB Elsevier
SN 0048-9697
LK https://hdl.handle.net/10612/17933
UL https://hdl.handle.net/10612/17933
NO Blanco-Alegre, C., Calvo, A. I., Alves, C., Fialho, P., Nunes, T., Gomes, J., Castro, A., Oduber, F., Coz, E., and Fraile, R. (2020). Aethalometer measurements in a road tunnel: A step forward in the characterization of black carbon emissions from traffic. The Science of the Total Environment, 703, Article e135483.  https://doi.org/10.1016/j.scitotenv.2019.135483
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 21-may-2024