Estudo das emissões de fontes móveis na região metropolitana de Porto Alegre, Rio Grande do Sul

Teixeira, Elba Calesso; Feltes, Sabrina; Santana, Eduardo Rodrigo Ramos de

doi:10.1590/s0100-40422008000200010

Cited by 63 publications

(43 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These differences between Caraá and both Taquara and Campo Bom could be associated, at least partially, to a variety of potentially genotoxic substances present in the atmospheric air. While Caraá has a low demographic density, with an almost entirely rural population (IBGE, 2013) and lower anthropic impact, Taquara and Campo Bom are within the Porto Alegre metropolitan area, which is characterized by significant emission of atmospheric pollutants, from vehicle traffic and stationary sources such as steelworks, oil refineries and industrial complexes (Teixeira et al, 2008. The state highway RS 239 that passes through urban perimeters of Taquara and Campo Bom is characterized by intense vehicle traffic (≈ 626,000 vehicles/month) (EGR, 2013).…”

Section: Discussionmentioning

confidence: 99%

Biomonitoring the genotoxic potential of the air on Tradescantia pallida var. purpurea under climatic conditions in the Sinos River basin, Rio Grande do Sul, Brazil

et al. 2015

View full text Add to dashboard Cite

The present study evaluated the genotoxic effects of the atmospheric air on Tradescantia pallida var. purpurea in urban areas with different intensities of vehicular traffic and in riparian forest fragments in the Sinos River Basin (Rio Grande do Sul, Brazil), considering the influence of climatic conditions prevailing in these environments. Bimonthly, from May 2012 to March 2013, cuttings with flower buds were exposed for 8 h in urban and riparian forest environments in the municipalities of Caraá, Taquara and Campo Bom in the upper, middle and lower sections, respectively, of the Sinos River Basin. Simultaneously, negative controls were made and climatic data were recorded. Micronuclei (MCN) frequencies were determined in young tetrads of pollen mother cells and expressed as MCN/100 tetrads. Significantly higher MCN frequencies were observed in buds exposed in urban and riparian forest environments in Taquara (up to 7.23 and 4.80, respectively) and Campo Bom (up to 4.90 and 4.23, respectively) than in buds exposed in Caraá (up to 2.90 and 2.50, respectively), in the majority of samplings, and in relation to the negative control (up to 1.93) in all months. Over the course of the period monitored, there were significant variations in MCN frequencies at all sampling points, with the exception of the urban environment in Caraá. For the urban environments, relation between the MCN frequency, vehicular traffic and mean temperature was observed. For the riparian forest fragments, there was no association between MCN frequency and climatic factors. Tradescantia pallida var. purpurea can be considered a useful tool to point out areas with increased atmospheric pollution, since the exposure of plants under severe climatic conditions is avoided to minimize their negative influence on the formation of micronuclei.Keywords: abiotic factors, vehicular emissions, bioindicator, environmental quality, micronucleus. Biomonitoramento do potencial genotóxico do ar em

show abstract

Section: Discussionmentioning

confidence: 99%

Biomonitoring the genotoxic potential of the air on Tradescantia pallida var. purpurea under climatic conditions in the Sinos River basin, Rio Grande do Sul, Brazil

et al. 2015

View full text Add to dashboard Cite

show abstract

“…This dye can easily detect in adulterated fuels by dilution with solvents or in poor-quality products at very low levels [97]. In the USA, the Environmental Protection Agency (EPA) designates the use of a red dye, the "Red Solvent 26," to identify and label high sulfur fuels [98]. In Brazil, in recent years, a fuel alcohol marking system has been adopted [99], whose purpose is to ensure its quality, as well as to free it from adulteration fraud by addition of water.…”

Section: Electroanalysis Of Marker Dyesmentioning

confidence: 99%

Advances and Trends in Voltammetric Analysis of Dyes

Hudari¹,

Brugnera²,

Zanoni³

2017

Applications of the Voltammetry

View full text Add to dashboard Cite

Since 1856 when W. H. Perkin synthesized the first synthetic dye (Mauveine), a wide variety of colors and shades are produced and used in several commercial products. The occurrence in water and wastewater has gained controversy regarding their toxicity and mutagenicity and it has been regulation by several regulatory agencies. Thus, analytical methods able to determine these colorings in several matrices with high sensitive and robust enough are relevant. Among several analytical methods, the use of electroanalytical methods, especially the voltammetric techniques, are of great interest due to the high selectivity, sensitivity, use of low quantity of sample, little or without sample treatment, and low waste generation, which contributes to reduced environmental impact. Over the past decades, the technical based on current-potential curves by using of static electrodes have gained considerable progress, as minimizing the effect of capacitive current and the possibility of pre-concentration of the analyte at the electrode surface, which has reflected in lower detection levels. The present work gives an overview about the analytical methods available in literature focusing on electroanalysis of dyes by using voltammetric techniques. The advances of the electroanalytical techniques and the use of different modifiers to increase sensitivity and selectivity are reviewed.

show abstract

“…Mazzoli, unpublished data, M.F. Alonso, unpublished data, Teixeira et al 2008). Alonso estimated emissions scenarios associated with the projection of the vehicular activity in Brazil for the period between 2003 and 2035.…”

Section: Introductionmentioning

confidence: 99%

“…In 2008 it was made a research about the emissions from the vehicles in the Metropolitan Region of Porto Alegre (MRPA). As the most important result of this research, it was obtained data of total pollutants emissions in the atmosphere for the region, entailed with vehicles running on gasoline, alcohol, diesel, vehicular natural gas and motorcycles in 2004(Teixeira et al 2008. Nevertheless, for the MRPA it was not found information about the elaboration of future scenarios of vehicular emission that allows it to study the impact of these emissions on the air quality, such fact that motivated the realization of this study.…”

Section: Introductionmentioning

confidence: 99%

Estimated evolution of total pollutant gas emissions associated with vehicle activity in the Metropolitan Region of Porto Alegre until 2030

Chovert

Alonso

2017

An. Acad. Bras. Ciênc.

View full text Add to dashboard Cite

In recent years, the majority of economic sectors in Brazil have gone through processes of development and transformation. These processes have led to increases in environmental pollution of all kinds; air pollution being one of the most adverse. The Brazilian transportation sector, which heavily affects the air quality, experienced a significant increase in its vehicle fleet thus provoking larger emissions of pollutant gases, mainly in regions with high population density such as the Metropolitan Region of Porto Alegre (MRPA). Within this research, considering mainly the ozone precursor species and Carbon Monoxide and using the year 2001 as a base year, scenarios are obtained for vehicular emissions of pollutant gases in the MRPA until the year 2030. In addition, scenarios related to the evolution of the study region's vehicle fleet were estimated. The statistical tool LEAP (Long Range Energy Alternatives Planning System) was used. The scenario analysis shows that the vehicle fleet will grow exponentially until 2030, considering that the Light Flex vehicles category will mainly contribute to this increase. It is also noted that vehicle emissions of CO, NO x , and THC decrease in the region. The decrease is caused mainly by the renewal of technology in new vehicles and the implementation of emission control programs created by the government.

show abstract

Estudo das emissões de fontes móveis na região metropolitana de Porto Alegre, Rio Grande do Sul

Cited by 63 publications

References 1 publication

Biomonitoring the genotoxic potential of the air on Tradescantia pallida var. purpurea under climatic conditions in the Sinos River basin, Rio Grande do Sul, Brazil

Biomonitoring the genotoxic potential of the air on Tradescantia pallida var. purpurea under climatic conditions in the Sinos River basin, Rio Grande do Sul, Brazil

Advances and Trends in Voltammetric Analysis of Dyes

Estimated evolution of total pollutant gas emissions associated with vehicle activity in the Metropolitan Region of Porto Alegre until 2030

Contact Info

Product

Resources

About