Suspended Particulate Matter
Mostrando 13-24 de 40 artigos, teses e dissertações.
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13. Determinação da concentração de elementos químicos potencialmente tóxicos em aerossóis presentes no interior de uma pequena indústria de fundição de metais, utilizando amostrador temporal e a técnica de fluorescência de raios X / Toxic inorganic elements content in suspended particulate matter inside a small foundry plant by streaker sampler and energy dispersive X-ray fluorescence technique
The aim of this work was to evaluate the chemical concentration of some potentially toxic inorganic chemical elements and the time profiles in fine (PM2.5, particles up to 2.5 m) and coarse (PM2.5-10, particles from 2.5 to 10 m) suspended particulate matter (SPM) inside a small foundry plant - bronze, iron and aluminium -, in which at high concentrations tur
Publicado em: 2009
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14. Using energy dispersive X ray fluorescence (EDXRF) technique to evaluate the suspended particulate matter from Limeira city, State of São Paulo, Brazil / Utilização da técnica de fluorescência de raios X por dispersão em energia (EDXRF) na avaliação do material particulado em suspensão na cidade de Limeira - SP
The main objective of this work was to evaluate the chemical composition of the suspended particulate matter from the atmosphere of the city of Limeira, State of São Paulo, by energy dispersive X-ray fluorescence (EDXRF) technique. A stacker filter sampler was used to collect the fine (particles with aerodynamic diameter between 2.5 and 10 müm) and the gro
Publicado em: 2009
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15. Estrutura e produtividade da comunidade fitoplanctÃnica de um estuÃrio tropical (SirinhaÃm, Pernambuco, Brasil)
The estuary of SirinhaÃm river located in the district of SirinhaÃm, Southern of Pernambuco state, (8Â34â-8Â37âS e 35Â04â-35Â01âW), was evaluating aiming to catalog the phytoplankton community, estimating its productive capacity, the temporal spatial dynamics and the principal environmental variables that affect its composition. The samplings of th
Publicado em: 2009
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16. Aspectos hidrogeoquímicos de uma microbacia reflorestada com Eucalyptus grandis no município de Angatuba - São Paulo / Hydrogeochemistry aspects of a Eucalyptus grandis reforested watershed in Angatuba - São Paulo
This study aimed to characterize the Entre Rios stream small watershed hydrogeochemistry, reforested with eucalyptus using materials transport models in dissolved and particulate phases, in periods of sampling, before and after the clearcutting. In the experimental area were collected river water samples, suspended particulate material, rain water, soil and
Publicado em: 2009
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17. Composição elementar do material particulado presente no aerossol atmosférico do município de Sete Lagoas, Minas Gerais
The main objective of this study was the identification of sources generating particulate matter in the atmospheric aerosols of Sete Lagoas, Minas Gerais. The measurement of the mineral composition was accomplished by X-ray diffractometry and the elemental concentration by neutron activation analysis. The results showed that Al, Cl, Cu, Fe, K, Mg and Na are
Química Nova. Publicado em: 2007-10
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18. Caracterização hidrogeoquímica da microbacia de drenagem do córrego Barra Bonita, São Paulo / Hydrogeochemistry characterization of the Barra Bonita stream small watershed, São Paulo
The study in the Barra Bonita stream small watershed (S: 22o 2553,9" and W: 48o 3234,8") aimed to characterize its hydrogeochemical parameters by dissolved and particulate material transport models to identify the relations between soil use and water quality. Because there was no longer an environmental zoning in the municipality of Barra Bonita, this study
Publicado em: 2007
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19. Exposição aguda ao material particulado total em suspensão proveniente de diferentes fontes e suas repercussões nas respostas inflamatórias, sistêmica e local, em ratos / Acute exposure to total suspended particles from different sources and their impacts on both systemic and local inflammatory responses in rats
Background: Air pollution is associated with both increased morbidity and mortality. These associations persist even at lower concentrations and shortterm exposure. Objectives: To assess the impact of the components of three different sources of Total Suspended Particles (TSP) on local and systemic inflammatory responses in healthy rats. Methods: TSP from au
Publicado em: 2007
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20. Estudo da participação de metais traço em uma linha d`água de um tanque de cultivo de camarão marinho do município de Santa Rita-PB
Brazil, it is nowadays, is one of the main producing of sea shrimp of the world. Due to this position, necessary that is done there are discussions that relates this activity to the environmental preservation, aiming avoid, among others problems, irreparable damages to the mangroves ecosystem and modification in the water quality of the rivers that receive e
Publicado em: 2006
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21. Dinâmica biogeoquímica do estuário do Rio Itajaí-Açú, SC.
The Itajaí river estuary, SC, is located in the final portion of Itajaí river watershed, which has a total area of about 15,500 km2. The terminal region of this watershed is characterized by the presence of important cities such as Blumenau and Itajaí. Agriculture is also important, specially irrigated rice culture. The aim of this study was to evaluate t
Publicado em: 2006
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22. Variação espacial e sazonal de elementos maiores e traços no estuários do Rio Curimataú (RN), através de dados geoquímicos e de sensoriamento remoto
O estuário do rio Curimataú localiza-se na porção sul do litoral oriental do Estado do Rio Grande do Norte, apresentando uma das últimas porções de manguezais no Estado. Este ecossistema tem sido fortemente afetado por diversas atividades antropogênicas, como o cultivo de cana-de-açúcar, a carcinicultura, além da urbanização. Trabalhos anteriore
Publicado em: 2006
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23. ESTUDO DA COMPOSIÇÃO QUÍMICA DO MATERIAL PARTICULADO EM SUSPENSÃO NO AR NA CIDADE DO RIO DE JANEIRO / STUDY OF THE CHEMICAL COMPOSITION OF THE SUSPENDED PARTICULATE MATTER IN THE AIR IN RIO DE JANEIRO CITY
Dez amostradores de material particulado em suspensão no ar foram instalados em diferentes bairros da cidade do Rio de Janeiro: Gávea, Honório Gurgel, Jacarepaguá, Campo Grande, Tijuca, Ilha do Fundão, Guaratiba, Recreio dos Bandeirantes, Santa Cruz e Realengo, visando contribuir para um maior entendimento a respeito da poluição atmosférica na cidade
Publicado em: 2005
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24. Avaliação de poluição do ar por chumbo particulado: uma abordagem geoquímica
High lead concentrations up to 5478 mg kg-1 were detected in dry atmospheric precipitations in Rio Grande city and adjacent area. Lead anomalies cover up to 30% of the study area. Lead concentration measurement in dry atmospheric precipitation and suspended particulate matter provides a possibility to detect concentrations above lead threshold in the air. Th
Química Nova. Publicado em: 2003-01