@Article{RosascoMariMartPere:2011:CaMoPa,
               author = "Rosasco, Franklin Velarde and Mariani, Rauda L{\'u}cia and 
                         Martins, Maria Paulete Pereira and Pereira, Enio Bueno",
          affiliation = "{} and {} and {Instituto Nacional de Pesquisas Espaciais (INPE)} 
                         and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Caracteriza{\c{c}}{\~a}o morfol{\'o}gica de part{\'{\i}}culas 
                         na atmosfera de S{\~a}o Jos{\'e} dos Campos SP, utilizando 
                         microscopia eletr{\^o}nica de varredura (MEV)",
              journal = "Geochimica Brasiliensis",
                 year = "2011",
               volume = "25",
               number = "1",
                pages = "25--33",
                 note = "Setores de Atividade: Outras atividades profissionais, 
                         cient{\'{\i}}ficas e t{\'e}cnicas.",
             keywords = "aerossol black carbon, composi{\c{c}}{\~a}o qu{\'{\i}}mica, 
                         morfologia, dispers{\~a}o, black carbon aerosol, chemical 
                         composition, morphology, scatter.",
             abstract = "O estudo trata da caracteriza{\c{c}}{\~a}o morfol{\'o}gica do 
                         aerossol Black Carbon (BC) coletado durante os meses de 
                         mar{\c{c}}o a novembro de 2008 num ponto de monitoramento em 
                         S{\~a}o Jos{\'e} dos Campos-SP. O aerossol BC {\'e} um 
                         particulado inerte na atmosfera, por{\'e}m, devido {\`a} sua 
                         porosidade e natureza adsortiva, atua como superf{\'{\i}}cie 
                         ativa de algumas rea{\c{c}}{\~o}es qu{\'{\i}}micas 
                         heterog{\^e}neas, podendo estar saturado com esp{\'e}cies 
                         t{\'o}xicas ou carcinog{\^e}nicas. Assim, aeross{\'o}is de BC 
                         podem representar um perigo para a sa{\'u}de p{\'u}blica, 
                         al{\'e}m de serem considerados o segundo maior contribuinte para 
                         o aquecimento global, em termos de sua for{\c{c}}ante radiativa 
                         direta. A t{\'e}cnica utilizada foi a Microscopia Eletr{\^o}nica 
                         de Varredura (MEV) associada {\`a} Espectroscopia de Energia 
                         Dispersiva de raios X (EDX). Essa t{\'e}cnica tamb{\'e}m permite 
                         a an{\'a}lise qualitativa da composi{\c{c}}{\~a}o elementar das 
                         part{\'{\i}}culas. A partir de classifica{\c{c}}{\~a}o, por 
                         semelhan{\c{c}}a morfol{\'o}gica, foram identificados 6 grupos 
                         distintos de part{\'{\i}}culas: um grupo de part{\'{\i}}culas 
                         produzidas por combust{\~a}o de motores; outro de 
                         part{\'{\i}}culas procedentes da ressuspens{\~a}o do solo; 
                         grupo de part{\'{\i}}culas da queima de biomassa; de 
                         part{\'{\i}}culas de fuligem industrial e mais dois grupos com 
                         morfologia e composi{\c{c}}{\~a}o qu{\'{\i}}mica semelhantes e 
                         espec{\'{\i}}ficos da regi{\~a}o. As principais fontes 
                         identificadas foram de combust{\~a}o de motores e 
                         ressuspens{\~a}o do solo, por{\'e}m com influ{\^e}ncias de 
                         outras fontes naturais e antr{\'o}picas. ABSTRACT: The study 
                         deals with the morphological characterization of aerosol Black 
                         Carbon (BC) collected during the months from March to November 
                         2008 in a monitoring point in Sao Jose dos Campos, State of 
                         S{\~a}o Paulo, southern Brazil. The BC aerosol particles is an 
                         inert in the atmosphere, but due to its porosity and adsorptive 
                         nature acts as the active surface of some heterogeneous chemical 
                         reactions, which may be saturated with toxic or carcinogenic 
                         species. Thus, aerosol BC may represents a danger to public 
                         health, besides being considered the second largest contributor to 
                         global warming, in terms of their direct radioactive forcing. The 
                         technique used was electron microscopy (SEM) associated with 
                         Energy Dispersive Spectroscopy (EDS). This technique also allows 
                         the quantitative analysis of elemental composition of the 
                         particles. From the classification by morphological similarity, we 
                         identified six distinct groups of particles: a group produced by 
                         combustion engines, other particles coming from resuspension of 
                         soil; group of particles from biomass burning, soot particles from 
                         industrial and two groups with similar morphology and chemical 
                         composition and specific to the region. The main sources were 
                         identified combustion engines and resuspension of soil, but with 
                         influences of other natural and anthropogenic sources.",
                 issn = "0102-9800",
                label = "lattes: 0638551133292550 4 RosascoMariMartPere:2012:CaMoPa",
             language = "pt",
           targetfile = "329-1319-1-PB.pdf",
                  url = "http://www.geobrasiliensis.org.br/ojs/index.php/geobrasiliensis/issue/view/48",
        urlaccessdate = "30 abr. 2024"
}