2010
DOI: 10.1590/s0100-40422010000400012
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Poluição e a densidade de vegetação: BTEX em algumas áreas públicas de Curitiba - PR, Brasil

Abstract: , BRAZIL. The occurrence of benzene, toluene, ethylbenzene, and xylenes (BTEX) in some public areas of Curitiba-PR, Brazil, was evaluated. Their concentrations were then related to the vegetation's density in each area. Average benzene concentrations varied from 3.9 to 6.1 mg m -3, with higher values occurring in poorly dense vegetation areas. For toluene, average concentrations ranged from 6.5 to 7.2 mg m -3. The effect of such pollutants was evaluated by means of a bio indicator, Tillandsia stricta. Variatio… Show more

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Cited by 14 publications
(9 citation statements)
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“…The thickness of the chlorenchyma in the leaves of Tillandsia stricta Sol. ex Sims, an epiphytic bromeliad, decreased in the presence of higher concentrations of volatile organic pollutants commonly found in urban areas (Godoi et al 2010). Comparing leaves of olive trees in rural and urban areas, Eleftheriou (1987) observed a reduction in the mesophyll of those leaves collected in the urban environment.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…The thickness of the chlorenchyma in the leaves of Tillandsia stricta Sol. ex Sims, an epiphytic bromeliad, decreased in the presence of higher concentrations of volatile organic pollutants commonly found in urban areas (Godoi et al 2010). Comparing leaves of olive trees in rural and urban areas, Eleftheriou (1987) observed a reduction in the mesophyll of those leaves collected in the urban environment.…”
Section: Discussionmentioning
confidence: 99%
“…The sections were described according to Van Cotthem (1970), Ogura (1972), White (1974), Sen and Hennipman (1981), and Rocha et al (2013). After digitizing the macroscopic and microscopic images, thicknesses (leaf blade, epidermis, hypodermis, midrib, and sclerified layer), areas (leaf blade, vascular bundle, and stomata), and stomatal LEDYANE D. ROCHA, GUSTAVO M. DA COSTA, GÜNTHER GEHLEN, ANNETTE DROSTE and JAIRO L. SCHMITT density were calculated using the Micrometrics SE Premium ® 2.9 software, according to the method adapted from Godoi et al (2010) and Santos et al (2010). The thickness of the hypodermal tissue was calculated as the mean of the thickness of the adaxial and abaxial hypodermis of each leaf.…”
Section: Macroscopic and Microscopic Analysesmentioning
confidence: 99%
“…Os parâmetros de rede experimentais para o rutilo são a = 4,594 Å e c = 2,959 Å, com grupo espacial P4 2 /mnm. 17 O anatase possui parâmetros a = 3,785 Å e c = 9,520 Å, com grupo espacial I4 1 A otimização do bulk foi inicialmente realizada permitindo a relaxação dos pontos da rede (denominada de iônica). Em seguida, fez-se a otimização total, ou seja, a relaxação iônica da estrutura cristalina e do volume do bulk (parâmetros de rede), simultaneamente.…”
Section: Detalhes Computacionaisunclassified
“…A poluição atmosférica pode ocasionar danos aos ecossistemas e causar ou agravar problemas de saúde humana, nos quais muitos dos poluentes são considerados carcinogênicos. [1][2] As principais causas da poluição atmosférica são as emissões pelas indústrias, a queima de combustíveis pelos automóveis, as perdas por evaporação no armazenamento e distribuição de combustíveis e solventes, as emissões biogênicas e a queima da biomassa. A qualidade do ar em ambientes fechados é alterada principalmente pela presença de inúmeros componentes usados em tintas, adesivos, vernizes, ceras, revestimentos, solventes, produtos de limpeza, dentre outros.…”
Section: Introductionunclassified
“…2A, 2C) were obtained through the Micrometrics SE Premium ® 2.9 software, using the method adapted from Godoi et al (2010) and Santos et al (2010). The thickness of the hypodermal tissue was calculated as the mean of the abaxial and adaxial hypodermal thicknesses of each leaf.…”
Section: Macroscopic and Microscopic Analysesmentioning
confidence: 99%