A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Physical and chemical characterization of asphalt (bitumen) paving exposures
The purpose of this research was to characterize the physical and chemical properties of asphalt (bitumen) fume and vapor in hot mix asphalt roadway paving operations. Area and personal air samples were taken using real-time equipment and extractive sampling and analytical methods to determine worker asphalt exposure, as well as to characterize the properties of the paniculate and vapor phase components. Analysis of personal inhalation and dermal samples by gas chromatography/mass spectroscopy showed that the polycyclic aromatic hydrocarbon profile is dominated by compounds with molecular weights below 228, and that substituted and heterocyclic polycyclic aromatic hydrocarbons comprised approximately 71% of the detectable mass concentration (vapor and paniculate combined). Principal components analysis shows that the polycyclic aromatic hydrocarbons with molecular weights greater than 190 are the driving force behind the polycyclic aromatic compound exposures measured for the dermal and paniculate phases; there was no clear trend for the vapor phase. Most of the aerosol particles are fine (mass median aerodynamic diameter 1.02 micron; count median diameter 0.24 micron).
Physical and chemical characterization of asphalt (bitumen) paving exposures
The purpose of this research was to characterize the physical and chemical properties of asphalt (bitumen) fume and vapor in hot mix asphalt roadway paving operations. Area and personal air samples were taken using real-time equipment and extractive sampling and analytical methods to determine worker asphalt exposure, as well as to characterize the properties of the paniculate and vapor phase components. Analysis of personal inhalation and dermal samples by gas chromatography/mass spectroscopy showed that the polycyclic aromatic hydrocarbon profile is dominated by compounds with molecular weights below 228, and that substituted and heterocyclic polycyclic aromatic hydrocarbons comprised approximately 71% of the detectable mass concentration (vapor and paniculate combined). Principal components analysis shows that the polycyclic aromatic hydrocarbons with molecular weights greater than 190 are the driving force behind the polycyclic aromatic compound exposures measured for the dermal and paniculate phases; there was no clear trend for the vapor phase. Most of the aerosol particles are fine (mass median aerodynamic diameter 1.02 micron; count median diameter 0.24 micron).
Physical and chemical characterization of asphalt (bitumen) paving exposures
Physikalische und chemische Charakterisierung der Schadstoffexpositionen beim Asphaltieren
Herrick, Robert F. (author) / McClean, Michael D. (author) / Meeker, John D. (author) / Zwack, Leonard (author) / Hanley, Kevin (author)
2007
8 Seiten, 1 Bild, 6 Tabellen, 19 Quellen
Conference paper
English
Asphalt , Bitumen , Straßenbau , Schadstoffexposition , Dampf , Rauch , chemische Analyse , chemische Zusammensetzung , Gaschromatographie , Massenspektroskopie , polycyclischer aromatischer Kohlenwasserstoff , Molekulargewicht , heterozyklische organische Verbindung , Aerosol , Partikel , Durchmesser
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