Air quality and organic compounds in aerosols from a coastal rural area in the Western Iberian Peninsula over a year long period: Characterisation, loads and seasonal trends
Introduction
In most areas of Europe, gaseous and particulate atmospheric pollutants are chiefly the products of combustion from space heating, power generation or from motor vehicle traffic. Pollutants from these sources may not only prove a problem in the immediate vicinity, but can travel long distances, chemically reacting in the atmosphere to produce secondary pollutants, and impacting rural areas often far from the original emission site. Rural background sites help sort out regional sources of fine particles and prove useful in the development of control strategies. Reductions in gaseous and particulate pollutants are needed and may be more important from the stand-point of health effects and contribution to climate change. These reductions should be at least partially addressed by regulations on motorway and off-road traffic circulation.
One of the current priorities of research in atmospheric pollution is concentrated on the study of aerosols, namely in aspects related to their chemical composition, with special interest in the smallest particles. Aerosols have the potential to significantly influence our entire planet through their role in heterogeneous chemistry in the troposphere and stratosphere (Finlayson-Pitts and Pitts, 2000), as well as their effect on the Earth's climate as they scatter sunlight and serve as condensation nuclei for cloud droplet formation (Charlson et al., 1992, Penner et al., 2001, Ramanathan et al., 2001). At present, the radiative effects of aerosols have the largest uncertainties in global climate estimations to compute climate forcing due to anthropogenic changes in the composition of the atmosphere. A better understanding of the formation, composition and transformation of aerosols in the atmosphere is of decisive importance in order to better predict these effects.
A significant fraction of total atmospheric particulate matter is carbonaceous (Pio et al., 2001). Measurements of carbonaceous aerosol constituents in Portugal are still scarce and limited to only a few places. Nevertheless, existing data are, in most cases, short-termed and devoted to polycyclic aromatic hydrocarbons (PAH), due to their intrinsic mutagenic, teratogenic or carcinogenic properties (Alves and Ferraz, 2005, Alves et al., 2001, Alves et al., 2002, Pio et al., 2001, Rocha and Duarte, 1997, Rocha et al., 1999).
This paper reports the results of more than one year of research concerning the organic constitution in a Portuguese rural area. The measurement of gaseous components ( and CO), black carbon (BC) and meteorological parameters has helped to interpret results, in a tentative of inferring the contribution from different sources and the influence of weather variability on atmospheric characteristics.
Section snippets
Experimental
Integrated in the EU project CARBOSOL, atmospheric aerosol samples were collected, continuously, on a weekly basis, from July 2002 to September 2003, on pre-fired quartz fibre filters. Aiming to separate particles into two size fractions (aerodynamic diameter, and ), a impactor (Tisch TE—231F) and a size selective inlet (Sierra SSI 1220) were used. To categorise aerosols according to size, a high-volume instrument Sierra-Andersen was intermittently operated with a
Aerosol mass, carbon and gaseous ambient air pollutants
The PM values observed at Moitinhos (Table 1) are higher than background levels in continental Europe. Background annual average concentrations for continental Europe are and for and , respectively (Dingenen et al., 2004). The periods with low concentrations coincided with days with synoptic systems of low pressure associated with rain. In our study, average ratios of 0.66 and 0.59 were found, respectively, in the autumn/winter and spring/summer samples
Conclusions
average concentrations of were measured in Moitinhos, 41% of which was carbonaceous material. There is a patent seasonal variation for OC and EC levels, as well for carbon monoxide and elutable organic compounds. Relatively higher levels were detected during winter compared to other periods, as a result of wood burning for residential heating. Contrary to the OC and EC levels, the OC/EC ratio does not show any clear seasonal pattern and a high average value of 5.38 was obtained,
Acknowledgements
This research was supported by the European Union through the CARBOSOL project (EVK2-2001-00067). The authors also are grateful to the Portuguese Science Foundation for financial support through a Ph.D. grant to Tiago Oliveira.
References (43)
- et al.
Composition of extractable organic matter of air particles from rural and urban Portuguese areas
Atmospheric Environment
(2001) - et al.
Influence of traffic on the and urban aerosol fractious in Madrid (Spain)
The Science of the Total Environment
(2004) - et al.
Characterization of organic aerosol in Big Bend National Park, Texas
Atmospheric Environment
(2002) - et al.
Particulate carbon in the atmosphere of a Finnish forest and a German anthropogenically influenced grassland
Atmospheric Research
(2006) - et al.
Carbonaceous aerosol in urban and rural European atmospheres: estimation of secondary organic carbon concentrations
Atmospheric Environment
(1999) - et al.
Daily, weekly, and seasonal time courses of VOC concentrations in a semi-urban area near Barcelona
Atmospheric Environment
(2006) - et al.
Determination of organic molecular markers in marine aerosols and sediments: one-step flash chromatography compound class fractionation and capillary gas chromatographic analysis
Journal of Chromatography A
(1998) - et al.
Identification, abundance and origin of atmospheric particulate matter in a Portuguese rural area
Atmospheric Environment
(2001) - et al.
Comparative assessment of ambient air quality in two typical Mediterranean coastal cities in Greece
Chemosphere
(2005) - et al.
Spatial distribution of associated organic compounds in central California
Atmospheric Environment
(2006)
Trends in alkanes and PAHs in airborne particulate matter from Oporto and Vienna: identification and comparison
The Science of the Total Environment
Preliminary chemical characterization of particle-phase organic compounds in New Delhi, India
Atmospheric Environment
Determination of anthropogenic and biogenic organic compounds on airborne particles: flash chromatographic fractionation and capillary gas chromatographic analysis
Journal of Chromatography A
Measurements of polycyclic aromatic hydrocarbons in airborne particles from the metropolitan area of São Paulo City, Brazil
Atmospheric Environment
Effects of air pollution on emergency admissions for chronic obstructive pulmonary diseases in Oporto, Portugal
International Journal of Environment and Pollution
Secondary organic compounds in atmospheric aerosols: speciation and formation mechanisms
Journal of the Brazilian Chemical Society
Mass balance of organic carbon fractions in atmospheric aerosols
Journal of Geophysical Research
Identification and seasonal variation of atmospheric organic pollutants in Campos dos Goytacazes, Brazil
Atmospheric Environment
A review of atmospheric polycyclic aromatic hydrocarbons: sources, fate and behavior
Water, Air, and Soil Pollution
Characterization and source apportionment of atmospheric organic and elemental carbon during fall and winter of 2003 in Xi’an, China
Atmospheric Chemistry and Physics Discussions
Climate forcing by anthropogenic aerosols
Science
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