Abstract (EN):
Ambient air quality is a very topical issue as it has an important influence on human health.
Exposure to atmospheric pollutants may result in various adverse health effects. The
impacts of air pollution are not confined only to human health but also to the environment
as a whole. In that regard, vehicular traffic emissions are especially important, because its
volume is increasing every year. Consequently pollutants, such as nitrogen oxides (NOx),
carbon monoxide (CO), particulate matter (PM), and polycyclic aromatic hydrocarbons
(PAHs) are emitted into the atmosphere causing a significant decline of air quality across
Europe, which results in hundreds of thousands of premature deaths every year. In order to
improve the situation, the European Union has been defining legislation on ambient air
quality with limits of the respective pollutants and aiming to increase the levels of public
health protection. Despite reductions in emissions, concentrations of these pollutants remain
high ¿ often above existing targets ¿ exposing populations to levels that reduce life
expectancy, cause premature death and widespread aggravation to health.
In this chapter, various aspects of air pollution are discussed with specific emphasis on
vehicular road traffic. An overview of the current legislation related to air quality is given.
The work then focuses on the health impacts of important traffic related pollutants, with
particular focus on polycyclic aromatic hydrocarbons (PAHs). The general description of
PAHs is presented with further discussion on their health and environmental impacts.
Idioma:
Inglês
Tipo (Avaliação Docente):
Científica
Nº de páginas:
21