title: Traffic and catalytic converter - related atmospheric contamination in the metropolitan region of the city of Rio de Janeiro, Brazil.
abstract: In this work, 24-h PM10 samples were collected in Rio de Janeiro, Brazil, and analysed for trace elements (Cd, Ce, Cu, La, Mo, Ni, Pb, Pd, Rh, Sb and Sn). The sampling was carried out at five locations (Bonsucesso; Centro, downtown city; Copacabana; Nova Iguaçu and Sumaré) with different traffic densities and anthropogenic activities. An analytical method based on the EPA method for the determination of trace elements in airborne particulate matter (PM), using ultrasonic-assisted extraction and inductively coupled plasma mass spectrometry (ICP-MS) was applied. Our results suggest that vehicular traffic is the most important source of environmental pollution at the studied sites. The presence of Mo, Pd and Rh in the analysed filters reflects an additional source of pollution caused by the erosion and deterioration of automotive catalytic converters.
authors: Coordenação de Análises Minerais, Centro de Tecnologia Mineral - CETEM, Av. Pedro Calmon 900, Cidade Universitária, CEP 21941-908 Rio de Janeiro, R.J., Brazil.
authors: Lílian Irene Dias
authors: LI
authors: da Silva
authors: Jorge Eduardo
authors: JE
authors: de Souza Sarkis
authors: Fátima Maria Zanon
authors: FM
authors: Zotin
authors: Manuel Castro
authors: MC
authors: Carneiro
authors: Arnaldo Alcover
authors: AA
authors: Neto
authors: Alzira dos Santos Amaral Gomes
authors: Ados S
authors: da Silva
authors: Mauri José Baldini
authors: MJ
authors: Cardoso
authors: Maria Inês Couto
authors: MI
authors: Monteiro
mesh_terms: D000397:Air Pollution / Q000032:analysis*; D001272:Atmosphere / Q000737:chemistry*; D001336:Automobiles; D001938:Brazil; D002947:Cities; D016000:Cluster Analysis; D005374:Filtration; D007554:Isotopes; D019216:Metals, Heavy / Q000032:analysis / Q000737:chemistry; D052638:Particulate Matter / Q000032:analysis / Q000737:chemistry
chemical_list: D007554:Isotopes; D019216:Metals, Heavy; D052638:Particulate Matter