Este estudo concentra-se nos sistemas estuarinos tropicais de Mundaú-Manguaba (MMELS) e do Rio Paraíba do Sul (PSR), ambos no Brasil e afetados por práticas da monocultura da canade-açúcar e por urbanização. Os níveis de 17 hidrocarbonetos policíclicos aromáticos (HPAs), 16 dos quais são classificados como poluentes prioritários para estudos ambientais pela US-EPA e o perileno (HPA biogênico) foram avaliados nos sedimentos superficiais para identificar fontes da poluição e determinar níveis base como estratégias para gerenciamentos futuros. O Σ16HPAs variou de 2,90 a 231,30 μg kg -1 em MMELS e de 87,10 a 9344,29 μg kg -1 no PSR. As relações entre HPAs isômeros sugeriram principalmente fontes de origem pirogênica.This study focuses on the tropical estuarine systems of Mundaú-Manguaba (MMELS) and Paraíba do Sul River (PSR), Brazil, affected by sugarcane monoculture practices and also urbanization. The levels of 17 polycyclic aromatic hydrocarbons (PAHs), 16 of which are classified as priority pollutants by the US-EPA and perylene (a biogenic PAH) were measured in surface sediments to identify pollution sources and determine baseline data looking for future management strategies. The Σ16PAH ranged from 2.90 to 231.30 μg kg -1 in MMELS and from 87.10 to 9344.29 μg kg -1 in the PSR. PAH isomeric ratios suggested mainly pyrogenic input.
Parâmetros bioquímicos foliares das esPécies Licania tomentosa (benth.) e Bauhinia forficata (link.) Para avaliação da qualidade do ar otávio luiz Gusso maioli*, Jane meri santos, neyval costa reis Júnior e sérvio túlio alves cassini Departamento de Engenharia Ambiental, Universidade Federal do Espírito Santo, 29075-910 Vitória -ES, BrasilRecebido em 2/5/07; aceito em 2/6/08; publicado na web em 10/11/08 FOLIAR ANALYSES OF BIOCHEMICAL PARAMETERS OF Licania tomentosa (BENTH.) AND Bauhinia forficata (LINK.) SPECIES FOR AIR QUALITY ASSESSMENT. Foliar analysis of biochemical parameters were carried out in order to investigate the influence of air pollutants on two tropical tree species (Licania tomentosa (Benth.) and Bauhinia forfícata (Link.)). Special attention was given to tropospheric ozone due to the fact that concentration levels in the region were found to be up to 140 μg m -3 for a 4 h average time, which is well above the value that can cause injuries to orchides and tobacco (59 μg m -3). Other pollutants such as nitrogen and sulphur oxides were measured and their ambient concentrations were also associated to biochemical alterations in the investigated species.
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