@InProceedings{BourotteFortMelfLuca:2000:EsCoDu,
               author = "Bourotte, C. and Forti, Maria Cristina and Melfi, A. J. and Lucas, 
                         Y.",
          affiliation = "{CPTEC-INPE-Cachoeira Paulista-12630-000-SP-Brasil}",
                title = "Extrato aquoso de aerosois atmosfericos: um estudo comparativo 
                         entre duas areas contrastantes (poluida e natural) no estado de 
                         Sao Paulo, Brasil",
            booktitle = "Anais...",
                 year = "2000",
                pages = "426--429",
         organization = "Congresso de Geoqu{\'{\i}}mica dos Pa{\'{\i}}ses de 
                         L{\'{\i}}ngua Portuguesa, 6. \& Semana de Geoqu{\'{\i}}mica, 
                         12.",
             abstract = "In this work it is characterised the chemical composition of the 
                         aqueous extract of airborne matter collected in an urban region 
                         (S{\~a}o Paulo -Brazil) and in one natural (N{\'u}cleo Cunha / 
                         Indai{\'a}, State park of Serra do Mar -SP/Brazil). The inalable 
                         fraction of airbome matter was sampled (aerodynamic diameter < 2.5 
                         mm) during one winter period (July 1999) and one summer period 
                         (January and February 2000) at both sites. Major cations and 
                         anions were determined in the aqueous extract by Ion 
                         Chromatography and the following chemical elements AI, Mn, Fe, Pb, 
                         Ti, V, Zn, Ni, Cu, Co, Cd, Ba, Rb e Sr by ICP-MS. The results 
                         showed that the total concentration of airbome particulates in the 
                         natural area was around half the value found in the urban area, 
                         both during winter and summer. Statistical analysis doneon the 
                         aqueous extract chemistry showed that the main sources of 
                         chemicals in the urban region are the industries and the vehicular 
                         emissions while in the natural area the main sources are 
                         gas-particle conversion and soil dust. RESUMO Neste trabalho 
                         {\'e} caracterizada composi{\c{c}}{\~a}o qu{\'{\i}}mica do 
                         extrato aquoso de material particulado em suspens{\~a}o coletado 
                         em uma regi{\~a}o urbana (S{\~a}o Paulo-Brasil) e uma natural 
                         (N{\'u}cleo Cunha/Indai{\'a}, Parque estadual da Serra do 
                         Mar/SP-Brasil). Foi amostrada uma fra{\c{c}}{\~a}o do material 
                         particulado inal{\'a}vel (di{\^a}metro aerodin{\^a}mico de 
                         corte de 2,5 mm). As coletas foram realizadas durante um 
                         per{\'{\i}}odo de inverno (julho de 1999) e um per{\'{\i}}odo 
                         de ver{\~a}o (Janeiro e Fevereiro de 2000) em ambos os 
                         s{\'{\i}}tios. No material coletado, ap{\'o}s 
                         solubiliza{\c{c}}{\~a}o foram dosados os c{\'a}tions e 
                         {\^a}nions maiores (cromatografia l{\'{\i}}quida) e os 
                         seguintes elementos qu{\'{\i}}micos (ICP-MS): Al, Mn, Fe, Pb, 
                         Ti, V, Zn, Ni, Cu, Co, Cd, Ba, Rb e Sr. Os resultados mostraram 
                         que a concentra{\c{c}}{\~a}o do material particulado na 
                         {\'a}rea natural {\'e} cerca de metade do valor encontrado na 
                         {\'a}rea urbana tanto no inverno como no ver{\~a}o. A partir da 
                         an{\'a}lise de fatores verifica-se que, na regi{\~a}o urbana, o 
                         material particulado {\'e} oriundo principalmente, das 
                         emiss{\~o}es veiculares e industriais, enquanto na {\'a}rea 
                         natural a principal fonte desse material particulado {\'e} a 
                         convers{\~a}o gas- part{\'{\i}}cula e o solo.",
  conference-location = "Faro - Portugal",
           copyholder = "SID/SCD",
                label = "self-archiving-INPE-MCTIC-GOV-BR",
             language = "pt",
           targetfile = "INPE-11739.pdf",
        urlaccessdate = "21 maio 2024"
}