A two-year monitoring program of aromatic hydrocarbons in Rio de Janeiro downtown area

A two-year monitoring program of aromatic hydrocarbons in Rio de Janeiro downtown area

Benzene, toluene, ethylbenzene, m+p+o-xylene (BTEX) and two trimethylbenzenes (BTEXT) were monitored in Rio de Janeiro downtown area during 2004 and 2005. Some criteria pollutants and meteorological parameters were also determined in order to assess the main data correlations. 94 samples were collected, using activated charcoal cartridges, between 9:00 am and 3:00 pm. The mean concentrations obtained were: 14.5, 22.8, 9.19, 19.3, 8.5, 10.4 and 12.1 µg m-3 for benzene, toluene, ethylbenzene, m+p-xylene, o-xylene, 1,2,3-trimethylbenzene and 1,3,5-trimethylbenzene, respectively. These values are similar to mean concentrations obtained in the Brazilian cities of Porto Alegre, Volta Redonda and São Paulo, which use the same type of fuel. Multivariate analyses showed that individual BTEXT are emitted by the same source and are not well correlated with other primary pollutants. These results may be due to the contribution of evaporative losses of the BTEXT and to the formation of secondary volatile organic compounds in the atmosphere.

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Auteurs principaux: Corrêa,Sérgio M., Arbilla,Graciela
Format: Digital revista
Langue:English
Publié: Sociedade Brasileira de Química 2007
Accès en ligne:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532007000300007
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spelling oai:scielo:S0103-505320070003000072007-06-28A two-year monitoring program of aromatic hydrocarbons in Rio de Janeiro downtown areaCorrêa,Sérgio M.Arbilla,Graciela air pollution monitoring hydrocarbons emision BTEX Rio de Janeiro Benzene, toluene, ethylbenzene, m+p+o-xylene (BTEX) and two trimethylbenzenes (BTEXT) were monitored in Rio de Janeiro downtown area during 2004 and 2005. Some criteria pollutants and meteorological parameters were also determined in order to assess the main data correlations. 94 samples were collected, using activated charcoal cartridges, between 9:00 am and 3:00 pm. The mean concentrations obtained were: 14.5, 22.8, 9.19, 19.3, 8.5, 10.4 and 12.1 µg m-3 for benzene, toluene, ethylbenzene, m+p-xylene, o-xylene, 1,2,3-trimethylbenzene and 1,3,5-trimethylbenzene, respectively. These values are similar to mean concentrations obtained in the Brazilian cities of Porto Alegre, Volta Redonda and São Paulo, which use the same type of fuel. Multivariate analyses showed that individual BTEXT are emitted by the same source and are not well correlated with other primary pollutants. These results may be due to the contribution of evaporative losses of the BTEXT and to the formation of secondary volatile organic compounds in the atmosphere.info:eu-repo/semantics/openAccessSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society v.18 n.3 20072007-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532007000300007en10.1590/S0103-50532007000300007
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country Brasil
countrycode BR
component Revista
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region America del Sur
libraryname SciELO
language English
format Digital
author Corrêa,Sérgio M.
Arbilla,Graciela
spellingShingle Corrêa,Sérgio M.
Arbilla,Graciela
A two-year monitoring program of aromatic hydrocarbons in Rio de Janeiro downtown area
author_facet Corrêa,Sérgio M.
Arbilla,Graciela
author_sort Corrêa,Sérgio M.
title A two-year monitoring program of aromatic hydrocarbons in Rio de Janeiro downtown area
title_short A two-year monitoring program of aromatic hydrocarbons in Rio de Janeiro downtown area
title_full A two-year monitoring program of aromatic hydrocarbons in Rio de Janeiro downtown area
title_fullStr A two-year monitoring program of aromatic hydrocarbons in Rio de Janeiro downtown area
title_full_unstemmed A two-year monitoring program of aromatic hydrocarbons in Rio de Janeiro downtown area
title_sort two-year monitoring program of aromatic hydrocarbons in rio de janeiro downtown area
description Benzene, toluene, ethylbenzene, m+p+o-xylene (BTEX) and two trimethylbenzenes (BTEXT) were monitored in Rio de Janeiro downtown area during 2004 and 2005. Some criteria pollutants and meteorological parameters were also determined in order to assess the main data correlations. 94 samples were collected, using activated charcoal cartridges, between 9:00 am and 3:00 pm. The mean concentrations obtained were: 14.5, 22.8, 9.19, 19.3, 8.5, 10.4 and 12.1 µg m-3 for benzene, toluene, ethylbenzene, m+p-xylene, o-xylene, 1,2,3-trimethylbenzene and 1,3,5-trimethylbenzene, respectively. These values are similar to mean concentrations obtained in the Brazilian cities of Porto Alegre, Volta Redonda and São Paulo, which use the same type of fuel. Multivariate analyses showed that individual BTEXT are emitted by the same source and are not well correlated with other primary pollutants. These results may be due to the contribution of evaporative losses of the BTEXT and to the formation of secondary volatile organic compounds in the atmosphere.
publisher Sociedade Brasileira de Química
publishDate 2007
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532007000300007
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