Encontrados 5 documentos, a visualizar página 1 de 1
Outdoor/indoor air quality in primary schools in Lisbon: a preliminary study
Pegas,Priscilla Nascimento; Evtyugina,Margarita G.; Alves,Célia A.; Nunes,Teresa; Cerqueira,Mário; Franchi,Mariana; Pio,Casimiro; Almeida,Susana MartaSimultaneous measurements of outdoor and indoor pollution were performed at three schools in Lisbon. Volatile organic compounds (VOCs), formaldehyde and NO2 were passively monitored over a two-week period. Bacterial and fungal colony-forming units and comfort parameters were also monitored at classrooms and playgrounds. The highest indoor levels of CO2 (2666 μg/m³), NO2 (40.3 μg/m³), VOCs (10.3 μ...
Air pollution and emergency admissions for cardiorespiratory diseases in Lisbon...
Alves,Célia A.; Scotto,Manuel G.; Freitas,Maria do CarmoDaily records of hospital admissions due to cardiorespiratory diseases and levels of PM10, SO2, CO, NO, NO2, and O3 were collected from 1999-2004 to evaluate the relationship between air pollution and morbidity in Lisbon. Generalised additive Poisson regression models were adopted, controlling for temperature, humidity, and both short and long-term seasonality. Significant positive associations, lagged by 1 or ...
Characterisation of solvent extractable organic constituents in atmospheric par...
Alves,Célia A.In spite of accounting for 10-70% of the atmospheric aerosol mass, particulate-phase organic compounds are not well characterised, and many aspects of aerosol formation and evolution are still unknown. The growing awareness of the impact of particulate aerosols on climate, and the incompletely recognised but serious effects of anthropogenic constituents on air quality and human health, have conducted to several...
Seasonal variation of particulate lipophilic organic compounds at nonurban site...
Oliveira, Tiago S.; Pio, Casimiro; Alves, Célia A.; Silvestre, Armando J. D.; Evtyugina, M.; Afonso, Joana; Fialho, Paulo; Legrand, MichelCopyright © 2007 American Geophysical Union. All Rights Reserved. ; Atmospheric aerosol samples, collected continuously during a sampling period longer than 1 year at six rural and background sites representing oceanic, rural and continental environments across Europe, were extracted, fractionated and analyzed by gas chromatography/mass spectrometry. The detailed organic speciation of the aerosol samples enabl...
Secondary organic compounds in atmospheric aerosols: speciation and formation m...
Alves,Célia A.; Pio,Casimiro A.Taking into account their atmospheric characteristics, generally under photochemical conditions, forested areas of Mediterranean countries constitute an appropriate environment to investigate the secondary organic aerosols. The objective of this study was to study in situ the aerosol composition, particularly in the photo-oxidation products of biogenic volatile organic compounds, taking into consideration anthr...
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