Contribution of vehicular traffic and industrial facilities to PM10 concentrations in a suburban area of Caserta (Italy)

PM10 levels have been recorded in the suburban area of Caserta (Italy) from February to October 2012. The daily limit was exceeded in 13 % of the determinations, with no significant difference between weekdays and weekends. Benzo[a] pyrene concentrations were in the range 0.01-0.46 ng/m(3), thus, never exceeding the National Standard. The B(a)P-eq was 0.20 ng/m(3). PM10 peaks were associated with wind from east-northeast. The same was observed for Ca concentrations, whereas no relation with wind direction was observed for organic pollutants. The results point to a local limestone quarry and cement factory as the likely major source of PM10 pollution in the area investigated.