RT info:eu-repo/semantics/article
T1 Analysis of PM10 and PM2.5 Concentrations in an Urban Atmosphere in Northern Spain
A1 García Pérez, María Ángeles
A1 Sánchez Gómez, María Luisa
A1 Rios, Adrián de los
A1 Pérez Bartolomé, Isidro Alberto
A1 Pardo Gómez, Nuria
A1 Fernández Duque, Beatriz
AB This work analyses levels of particles PM10 and PM2.5 recorded at four air-quality monitoring stations located in the urban area of Valladolid (Spain) during 2015–2016. To achieve this, the evolution of particle concentrations at different time scales was determined. Average concentrations ranged from 15.3 to 17.6 μg m−3 for PM10 and between 8.9 and 14.8 μg m−3 for PM2.5. The highest monthly means were recorded in autumn and winter. The difference between mean concentrations at weekends and on weekdays for PM10 was around 3 μg m−3 at most of the measuring stations and was 1 μg m−3 for PM2.5. Two concentration peaks were found during the day, one in the morning and the other in the evening, which evidenced theinfluence of traffic and other anthropogenic activities on PM concentrations. Their mean values were approximately 21 and 17–21 μg m−3, respectively, for PM10. Mean maximum values for PM2.5 were 12 μg m−3, except at one of the measuring sites, with 17 μg m−3 for the morning maximum and 1 μg m−3 more for the nocturnal peak. In addition, the impact of longdistancetransport of air masses in the study area was analysed by applying a HYSPLIT trajectory model, taking into account backward trajectories of European, African, and Atlantic origins as well as local conditions. In particular, high concentration events due to Saharan dust intrusions are presented. Finally, background levels of particle concentrations estimated at mostsampling areas were around 15 and 7.7 μg m−3 for the PM10 and PM2.5 particle fractions, respectively.
PB SPRINGER
YR 2018
FD 2018
LK http://uvadoc.uva.es/handle/10324/32964
UL http://uvadoc.uva.es/handle/10324/32964
LA eng
NO Archives of Environmental Contamination and Toxicology. Published on line, 14 November 2018
DS UVaDOC
RD 19-abr-2024