Size-distribution of airborne polycyclic aromatic hydrocarbons and other organic source markers in the surroundings of a cement plant powered with alternative fuels

作者：Sanchez Soberon Francisco; van Drooge Barend L; Rovira Joaquim; Grimalt Joan O; Nadal Marti; Domingo Jose L; Schuhmacher Marta^*

来源：Science of the Total Environment, 2016, 550: 1057-1064.

DOI：10.1016/j.scitotenv.2016.01.059

• Cement
• Particulate matter
• Polycyclic aromatic hydrocarbons
• Human health risk

The distributions of polycyclic aromatic hydrocarbons (PAHs) and molecular tracer organic compounds for biomass combustion, traffic emissions, soil dust, and secondary aerosol processing have been studied in three fractions of ambient air particulate matter (PM10, (2.)5, and (1)) collected in the vicinity of a cement plant. PAH concentrations were used to estimate the carcinogenic risks in humans. Combustion related compounds, including PAHs, and those from secondary aerosol processing, predominated in the finest (PM < 1) fraction, while saccharides related to organic soil dust predominated in the coarse fraction (2.5 < PM < 10). The molecular markers of biomass combustion were found in high concentrations, indicating the influence of biomass burning on PM. Must predominant PAHs were five and six rings species, related to a PAH profile characteristic of urban industrial environments. The concentrations of benzo[a]pyrene varied between 0.2 and 1.0 ng/m(3), which is close but lower than the annual limit value of 1 ng/m(3) established by law. Exposure and inhalation carcinogenic risks from total PAHs were below the EPA threshold of acceptable risk (1 . 10(-6)).

• 出版日期2016-4-15