4 documents found, page 1 of 1
Exploratory study of gaseous pollutants in primary schools in Luanda
Alves, Célia Anjos; Cipoli, Yago; Vicente, Estela; Ituamba, Joaquim; Leitão, Anabela 1.390 / 5.000 In several classrooms and in the outdoor courtyards of four primary schools in Luanda, a preliminary study was carried out involving monitoring by passive methods of various gaseous pollutants: benzene, toluene, ethylbenzene and xylenes (BTEX), ozone (O3), nitrogen dioxide ( NO2) and carbonyl compounds. The concentrations...
Ressuspensão de poeiras rodoviárias: emissões, composição química e toxicidade
Alves, Célia AnjosRoad dust resuspension contributes significantly to the atmospheric inhalable particulate matter (PM10) levels. Emissions and chemical composition of road dust show enormous geographic variability, depending on various factors such as the fleet in circulation and weather conditions. Given the scarcity of studies, dust sampling was carried out for the first time, using an in situ resuspension chamber, on roadway...
Ressuspensão de poeiras rodoviárias: emissões, composição química e toxicidade
Alves, Célia AnjosA ressuspensão de poeiras depositadas nas rodovias contribui significativamente para os níveis de matéria particulada inalável (PM10) na atmosfera. As emissões e a composição química destas poeiras apresentam uma enorme variabilidade geográfica, dependendo de vários fatores como a frota em circulação e a meteorologia. Dada a escassez de estudos, foram efetuadas pela primeira vez amostragens, utilizando uma câma...
Organic speciation of atmospheric particles in Alvão Natural Park (Portugal)
Alves, Célia Anjos; Gonçalves, Cátia; Mirante, Fátima; Nunes, Teresa; Evtyugina, Margarita; Sánchez de la Campa, Ana; Rocha, Ana C.PM(10) continental rural background aerosols were collected during a summer field campaign (August-September 2006) at Lamas de Olo in the upper zone of the Alvão Natural Park, a mountain region of northern Portugal. In addition to the determination of the carbonaceous content by a thermal-optical method, the organic speciation of aerosols was performed by gas chromatography-mass spectrometry in an effort to eva...