Influence of ozone and meteorological parameters on levels of polycyclic aromatic hydrocarbons in the air

2016 
Abstract Concentrations of ten polycyclic aromatic hydrocarbons (PAHs) in the PM 10 particle fraction were measured together with ozone and meteorological parameters at an urban site (Zagreb, Croatia) over a one-year period. Data were subjected to regression analysis in order to determine the relationship between the measured pollutants and selected meteorological variables. All of the PAHs showed seasonal variations with high concentrations in winter and autumn and very low concentrations during summer and spring. All of the ten PAHs concentrations also correlated well with each other. A statistically significant negative correlation was found between the concentrations of PAHs and ozone concentrations and concentrations of PAHs and temperature, as well as a positive correlation between concentrations of PAHs and PM 10 mass concentration and relative humidity. Multiple regression analysis showed that concentrations of PM 10 and ozone, temperature, relative humidity and pressure accounted for 43–70% of PAHs variability. Concentrations of PM 10 and temperature were significant variables for all of the measured PAH's concentrations in all seasons. Ozone concentrations were significant for only some of the PAHs, particularly 6-ring PAHs.
    • Correction
    • Source
    • Cite
    • Save
    • Machine Reading By IdeaReader
    26
    References
    10
    Citations
    NaN
    KQI
    []