9 documents found, page 1 of 1
Chemical speciation of PM emissions from heavy-duty vehicles
Cunha-Lopes, I.; Lehtoranta, K.; Almeida, S.M.; Evtyugina, M.; Vicente, A.; Vicente, E.; Kuutti, H.; Amato, F.; Alves, C.A.Particulate matter (PM) is recognised as the deadliest form of air pollution, with vehicle emissions being one of its most important sources. Verification of compliance with the emission standards has been reported in numerous works. However, the detailed chemical speciation of PM is still very poorly understood. In this study, different heavy-duty vehicles (HDV) were tested on a chassis dynamometer under diffe...
Characterisation of non-exhaust emissions from road traffic in Lisbon
Cunha-Lopes, I.; Alves, C. A.; Casotti Rienda, I.; Faria, T.; Lucarelli, F.; Querol, X.; Amato, F.; Almeida, S. M.Non-exhaust emissions from road transport include particles from brake and tyre wear, road surface abrasion and dust resuspension. Road dust loads and their chemical properties are heterogeneous and their knowledge is still scarce. This study aimed to characterise, for the first time in Lisbon, the thoracic fraction of road dust (PM10) by collecting samples directly from road pavements by an in situ resuspensio...
Source apportionment of PM2.5 and PM10 by Ionic and Mass Balance (IMB) in a tra...
Pio, C.; Alves, C.; Nunes, T.; Cerqueira, M.; Lucarelli, F.; Nava, S.; Calzolai, G.; Gianelle, V.; Colombi, C.; Amato, F.; Karanasiou, A.; Querol, X.The recently developed Ion and Mass Balance (IMB) source apportionment methodology was applied to a traffic influenced urban aerosol, permitting the quantification of the contributions of 11 source components, or formation processes, which accounted for more than 96% of the measured aerosol mass loading. Main sources included exhaust and non-exhaust road vehicle emissions, biomass burning, secondary inorganic a...
Physical and chemical properties of non-exhaust particles generated from wear b...
Alves, C. A.; Vicente, A. M. P.; Calvo, A. I.; Baumgardner, D.; Amato, F.; Querol, X.; Pio, C.; Gustafsson, M.A road simulator was used to generate wear particles from the interaction between two tyre brands and a composite pavement. Particle size distributions were monitored using a scanning mobility particle sizer and an aerosol particle sizer. Continuous measurements of particle mass concentrations were also made. Collection of inhalable particles (PM10) was conducted using a high-volume sampler equipped with quartz...
Impact of wood combustion on indoor air quality
Vicente, E. D.; Vicente, A. M.; Evtyugina, M.; Oduber, F. I.; Amato, F.; Querol, X.; Alves, C.The incomplete wood combustion in appliances operated in batch mode is a recognised source of both in- and outdoor airborne pollutants, especially particulate matter (PM). Data on pollutant levels and PM characteristics in households with wood burning devices in developed countries are scarce with most studies describing stove change out programmes or other intervention measures. The aim of the present study wa...
Evaluation of receptor and chemical transport models for PM10 source apportionment
Belis, C.A.; Pernigotti, D.; Pirovano, G.; Favez, O.; Jaffrezo, J.L.; Kuenen, J.; Denier van Der Gon, H.; Reizer, M.; Riffault, V.; Alleman, L.Y.In this study, the performance of two types of source apportionment models was evaluated by assessing the results provided by 40 different groups in the framework of an intercomparison organised by FAIRMODE WG3 (Forum for air quality modelling in Europe, Working Group 3). The evaluation was based on two performance indicators: z-scores and the root mean square error weighted by the reference uncertainty (RMSEu)...
The role of PIXE in the AIRUSE project “testing and development of air quality ...
Lucarelli, F.; Chiari, M.; Calzolai, G.; Giannoni, M.; Nava, S.; Udisti, R.; Severi, M.; Querol, X.; Amato, F.; Alves, C.; Eleftheriadis, K.The European AIRUSE LIFE+ project aims at testing existing and future mitigation measures and developing new strategies for the improvement of air quality in Southern European countries. The project involves public and private institutions of Spain, UK, Portugal, Italy and Greece. PM10 and PM2.5 daily samplings have been scheduled for one year (from January 2013) in four urban sites, Barcelona (Spain), Porto (P...
Particulate and gaseous emissions from the combustion of different biofuels in ...
Vicente, E. D.; Duarte, M. A.; Tarelho, L. A. C.; Nunes, T. F.; Amato, F.; Querol, X.; Colombi, C.; Gianelle, V.; Alves, C. A.Seven fuels (four types of wood pellets and three agro-fuels) were tested in an automatic pellet stove (9.5 kWth) in order to determine emission factors (EFs) of gaseous compounds, such as carbon monoxide (CO), methane (CH4), formaldehyde (HCHO), and total organic carbon (TOC). Particulate matter (PM10) EFs and the corresponding chemical compositions for each fuel were also obtained. Samples were analysed for o...
Variability of carbonaceous aerosols in remote, rural, urban and industrial env...
Querol, X.; Alastuey, A.; Viana, M.; Moreno, T.; Reche, C.; Minguillón, M. C.; Ripoll, A.; Pandolfi, M.; Amato, F.; Karanasiou, A.; Pérez, N.; Pey, J.We interpret here the variability of levels of carbonaceous aerosols based on a 12 yr database from 78 monitoring stations across Spain specially compiled for this article. Data did not evidence any spatial trends of carbonaceous aerosols across the country. Conversely, results show marked differences in average concentrations from the cleanest, most remote sites (around 1 μg m-3 of non-mineral carbon (nmC), mo...