INVESTIGADORES
CARRERAS Hebe Alejandra
congresos y reuniones científicas
Título:
Airborne particles in the city of Córdoba, Argentine
Autor/es:
CARRERAS, H; CALDERON SEGURA. M.E; RODRIGUEZ, I.; MURILLO,M; AMADOR MUNOZ, O; GOMEZ ARROYO, S.
Lugar:
Boston Usa
Reunión:
Congreso; Urban Environmental Pollution. Overcoming Obstacles to Sustainability and Quality of Life.; 2010
Institución organizadora:
Elsevier Press
Resumen:
In the
last few years special care was devoted to suspended particulate matter due to
the fact that evidence is consistent in showing adverse health effects from
exposures that are currently experienced by urban populations. Previous studies
have demonstrated that in the city of Cordoba,
Argentine, the levels of particulate material are often higher than the suggested
guideline values, particularly during wintertime. Thus, the single cell gel
electrophoresis (SCGE) w used to assess the genotoxicity of organic compounds associated
to particulate material collected in
Cordoba city during three distinct seasons. Samples of airborne
particulate matter ≤10 µm (PM10) were collected on fiber glass
filters. Organic matter adsorbed to PM10 on each filter was
extracted with dichloromethane, concentrated and then the components were
identified by a gas chromatograph-mass spectrometer.
The same extracts were employed for the SCGE
assay on human lymphocytes and for the MCN test with Tradescantia pallida. The analysis of organic extracts reveals the
presence of many polycyclic aromatic hydrocarbons suggesting that the main
emission source for organic compounds in the airborne particle
phase in this area were vehicles with combustion of gasoline and diesel. On the
other hand, the results suggest that the extent of genotoxic change caused by
pollutants depended at least in part on the seasonal weather, being higher
during winter. Besides, the genotoxic activities observed in the two test
systems were comparable. These results demonstrate the sensitivity of both
assays for the biological monitoring of environmental pollution related to organic
extracts associated to airborne particles.