Análises seqüenciais de agrupamentos aplicadas ao estudo de partículas atmosféricas
Autor(a) principal: | |
---|---|
Data de Publicação: | 2002 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/72974 |
Resumo: | The present paper has as objective to apply a sequential Cluster Analysis to the atmospheric particles: Hierarchical Cluster Analysis followed by Nonhierarchical Cluster Analysis. The hierarchical cluster analysis results were used as start point for the nonhierarchical cluster analysis as an agglomerative technique. These particles were taken from two areas of the metropolitan region of Porto Alegre, Charqueadas and Sapucaia do Sul., from may /97 to may/98, using a High Volume Sampler (Hi-Vol). Around 10,000 particles were analysed by Scanning Electron Microscope with Energy-Dispersive X-Ray microanalysis (SEM-EDS). The Hierarchical Cluster Analysis allowed the identification of five groups of particles, whose amounts were differentiated according to the summer and the winter campaigns. The abundance of each type of particles inside each group according to the different sections was verified by the Nonhierarchical Cluster Analysis, resulting in information about the emissions sources. |
id |
UFRGS-2_d2d62db6b8260b264dea1e34daeee656 |
---|---|
oai_identifier_str |
oai:www.lume.ufrgs.br:10183/72974 |
network_acronym_str |
UFRGS-2 |
network_name_str |
Repositório Institucional da UFRGS |
repository_id_str |
|
spelling |
Braga, Cláudia FloresTeixeira, Elba CalessoMigliavacca, Daniela MontanariCarvalho, Fabiana Goulart deFachel, Jandyra Maria Guimarães2013-07-03T01:42:41Z20020100-4042http://hdl.handle.net/10183/72974000355367The present paper has as objective to apply a sequential Cluster Analysis to the atmospheric particles: Hierarchical Cluster Analysis followed by Nonhierarchical Cluster Analysis. The hierarchical cluster analysis results were used as start point for the nonhierarchical cluster analysis as an agglomerative technique. These particles were taken from two areas of the metropolitan region of Porto Alegre, Charqueadas and Sapucaia do Sul., from may /97 to may/98, using a High Volume Sampler (Hi-Vol). Around 10,000 particles were analysed by Scanning Electron Microscope with Energy-Dispersive X-Ray microanalysis (SEM-EDS). The Hierarchical Cluster Analysis allowed the identification of five groups of particles, whose amounts were differentiated according to the summer and the winter campaigns. The abundance of each type of particles inside each group according to the different sections was verified by the Nonhierarchical Cluster Analysis, resulting in information about the emissions sources.application/pdfporQuímica nova. São Paulo. Vol. 25, n. 6A (nov./dez. 2002), p. 902-908Partículas atmosféricasAnálises sequênciaisAgrupamentos(Continuation) The groups of particles of Si/Al and Si and of Fe/Zn and Fe for Charqueadas were more significant in section 2 and 3 (NW and W wind directions) and in section 1 (SE wind direction), evidencing the influence of the coal power plant and steel industry, respectively located in these quadrants. In Sapucaia do Sul the data were more heterogeneous, causing a certain difficulty to identify the source as anthropogenic. Nevertheless the group of particles containing Fe was found in sectors of NW/W wind directions which shows the influence of the steel plant.Atmospheric particlesCluster analysisUrban air pollutionAnálises seqüenciais de agrupamentos aplicadas ao estudo de partículas atmosféricasSequential cluster analyses applied to the study of atmospheric particles info:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000355367.pdf000355367.pdfTexto completoapplication/pdf324939http://www.lume.ufrgs.br/bitstream/10183/72974/1/000355367.pdf0548cb95ea0030899a5c65a3f54defc9MD51TEXT000355367.pdf.txt000355367.pdf.txtExtracted Texttext/plain28314http://www.lume.ufrgs.br/bitstream/10183/72974/2/000355367.pdf.txtaa4dcd2b12dd5eb3c6ee0c677ba8b926MD52THUMBNAIL000355367.pdf.jpg000355367.pdf.jpgGenerated Thumbnailimage/jpeg1851http://www.lume.ufrgs.br/bitstream/10183/72974/3/000355367.pdf.jpg655a27652858f7c764e429d8b264bf33MD5310183/729742018-10-15 08:05:50.064oai:www.lume.ufrgs.br:10183/72974Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-15T11:05:50Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Análises seqüenciais de agrupamentos aplicadas ao estudo de partículas atmosféricas |
dc.title.alternative.en.fl_str_mv |
Sequential cluster analyses applied to the study of atmospheric particles |
title |
Análises seqüenciais de agrupamentos aplicadas ao estudo de partículas atmosféricas |
spellingShingle |
Análises seqüenciais de agrupamentos aplicadas ao estudo de partículas atmosféricas Braga, Cláudia Flores Partículas atmosféricas Análises sequênciais Agrupamentos (Continuation) The groups of particles of Si/Al and Si and of Fe/Zn and Fe for Charqueadas were more significant in section 2 and 3 (NW and W wind directions) and in section 1 (SE wind direction), evidencing the influence of the coal power plant and steel industry, respectively located in these quadrants. In Sapucaia do Sul the data were more heterogeneous, causing a certain difficulty to identify the source as anthropogenic. Nevertheless the group of particles containing Fe was found in sectors of NW/W wind directions which shows the influence of the steel plant. Atmospheric particles Cluster analysis Urban air pollution |
title_short |
Análises seqüenciais de agrupamentos aplicadas ao estudo de partículas atmosféricas |
title_full |
Análises seqüenciais de agrupamentos aplicadas ao estudo de partículas atmosféricas |
title_fullStr |
Análises seqüenciais de agrupamentos aplicadas ao estudo de partículas atmosféricas |
title_full_unstemmed |
Análises seqüenciais de agrupamentos aplicadas ao estudo de partículas atmosféricas |
title_sort |
Análises seqüenciais de agrupamentos aplicadas ao estudo de partículas atmosféricas |
author |
Braga, Cláudia Flores |
author_facet |
Braga, Cláudia Flores Teixeira, Elba Calesso Migliavacca, Daniela Montanari Carvalho, Fabiana Goulart de Fachel, Jandyra Maria Guimarães |
author_role |
author |
author2 |
Teixeira, Elba Calesso Migliavacca, Daniela Montanari Carvalho, Fabiana Goulart de Fachel, Jandyra Maria Guimarães |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Braga, Cláudia Flores Teixeira, Elba Calesso Migliavacca, Daniela Montanari Carvalho, Fabiana Goulart de Fachel, Jandyra Maria Guimarães |
dc.subject.por.fl_str_mv |
Partículas atmosféricas Análises sequênciais Agrupamentos |
topic |
Partículas atmosféricas Análises sequênciais Agrupamentos (Continuation) The groups of particles of Si/Al and Si and of Fe/Zn and Fe for Charqueadas were more significant in section 2 and 3 (NW and W wind directions) and in section 1 (SE wind direction), evidencing the influence of the coal power plant and steel industry, respectively located in these quadrants. In Sapucaia do Sul the data were more heterogeneous, causing a certain difficulty to identify the source as anthropogenic. Nevertheless the group of particles containing Fe was found in sectors of NW/W wind directions which shows the influence of the steel plant. Atmospheric particles Cluster analysis Urban air pollution |
dc.subject.eng.fl_str_mv |
(Continuation) The groups of particles of Si/Al and Si and of Fe/Zn and Fe for Charqueadas were more significant in section 2 and 3 (NW and W wind directions) and in section 1 (SE wind direction), evidencing the influence of the coal power plant and steel industry, respectively located in these quadrants. In Sapucaia do Sul the data were more heterogeneous, causing a certain difficulty to identify the source as anthropogenic. Nevertheless the group of particles containing Fe was found in sectors of NW/W wind directions which shows the influence of the steel plant. Atmospheric particles Cluster analysis Urban air pollution |
description |
The present paper has as objective to apply a sequential Cluster Analysis to the atmospheric particles: Hierarchical Cluster Analysis followed by Nonhierarchical Cluster Analysis. The hierarchical cluster analysis results were used as start point for the nonhierarchical cluster analysis as an agglomerative technique. These particles were taken from two areas of the metropolitan region of Porto Alegre, Charqueadas and Sapucaia do Sul., from may /97 to may/98, using a High Volume Sampler (Hi-Vol). Around 10,000 particles were analysed by Scanning Electron Microscope with Energy-Dispersive X-Ray microanalysis (SEM-EDS). The Hierarchical Cluster Analysis allowed the identification of five groups of particles, whose amounts were differentiated according to the summer and the winter campaigns. The abundance of each type of particles inside each group according to the different sections was verified by the Nonhierarchical Cluster Analysis, resulting in information about the emissions sources. |
publishDate |
2002 |
dc.date.issued.fl_str_mv |
2002 |
dc.date.accessioned.fl_str_mv |
2013-07-03T01:42:41Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/other |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/72974 |
dc.identifier.issn.pt_BR.fl_str_mv |
0100-4042 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000355367 |
identifier_str_mv |
0100-4042 000355367 |
url |
http://hdl.handle.net/10183/72974 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.ispartof.pt_BR.fl_str_mv |
Química nova. São Paulo. Vol. 25, n. 6A (nov./dez. 2002), p. 902-908 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRGS instname:Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS |
instname_str |
Universidade Federal do Rio Grande do Sul (UFRGS) |
instacron_str |
UFRGS |
institution |
UFRGS |
reponame_str |
Repositório Institucional da UFRGS |
collection |
Repositório Institucional da UFRGS |
bitstream.url.fl_str_mv |
http://www.lume.ufrgs.br/bitstream/10183/72974/1/000355367.pdf http://www.lume.ufrgs.br/bitstream/10183/72974/2/000355367.pdf.txt http://www.lume.ufrgs.br/bitstream/10183/72974/3/000355367.pdf.jpg |
bitstream.checksum.fl_str_mv |
0548cb95ea0030899a5c65a3f54defc9 aa4dcd2b12dd5eb3c6ee0c677ba8b926 655a27652858f7c764e429d8b264bf33 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS) |
repository.mail.fl_str_mv |
|
_version_ |
1801224793648791552 |