Road dust in urban or industrial sites is an important source of atmospheric particulate by re-suspension of finer particles that may contain potentially toxic pollutants. In this work Ion Beam Induced Luminescence (IBIL), Nuclear Magnetic Resonance and fluorescence spectroscopy analyses were used to characterize road dust samples with particle size lower than 250 μm collected on the walls and on the floor of the ventilation air shaft of "Traforo del San Bernardo" highway tunnel. Moreover, for comparison, IBIL analyses were performed both on some possible anthropic sources of particulate matter and on a road dust reference sample (BCR-723). IBIL spectra as a function of the fluence were analyzed with a multivariate approach in order to identify the spectral components evolving with different rate. Nuclear Magnetic Resonance and fluorescence spectroscopy analyses were performed on extracted samples of the road dust in order to study the contribution of organic compounds to the IBIL features. Results point out that IBIL, here performed for the first time for road dust analysis, can be applied for the identification of compounds by characterizing the sample origin.
IBIL analysis of road dust samples from San Bernardo Tunnel
Quaranta, Alberto;Guella, Graziano
2014-01-01
Abstract
Road dust in urban or industrial sites is an important source of atmospheric particulate by re-suspension of finer particles that may contain potentially toxic pollutants. In this work Ion Beam Induced Luminescence (IBIL), Nuclear Magnetic Resonance and fluorescence spectroscopy analyses were used to characterize road dust samples with particle size lower than 250 μm collected on the walls and on the floor of the ventilation air shaft of "Traforo del San Bernardo" highway tunnel. Moreover, for comparison, IBIL analyses were performed both on some possible anthropic sources of particulate matter and on a road dust reference sample (BCR-723). IBIL spectra as a function of the fluence were analyzed with a multivariate approach in order to identify the spectral components evolving with different rate. Nuclear Magnetic Resonance and fluorescence spectroscopy analyses were performed on extracted samples of the road dust in order to study the contribution of organic compounds to the IBIL features. Results point out that IBIL, here performed for the first time for road dust analysis, can be applied for the identification of compounds by characterizing the sample origin.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione
