Level, potential sources of polycyclic aromatic hydrocarbons (PAHs) in particulate matter (PM10) in Naples

摘要: Abstract In Naples, particulate matter PM10 associated with polycyclic aromatic hydrocarbons (PAHs) in ambient air were determined urban background (NA01) and traffic (NA02) sites. The principal objective of the study was to determine concentration distribution PAHs for identification their possible sources (through diagnostic ratio - DR component analysis PCA) an estimation human health risk (from exposure airborne TEQ). Airborne samples collected on quartz filters using a Low Volume Sampler (LVS) 24 h seasonal (autumn, winter, spring summer) about 15 days each between October 2012 July 2013. mass gravimetrically determined. levels, all seasons, significantly higher (P  Benzo[a]Pyrene, BaP (EU National limit value: 1 ng m−3 PM10), varied from 0.065 ng m−3 during autumn time 0.872 ng m−3 0.120 ng m−3 1.48 ng m−3 winter four overshoots. NA02 trend Σ12 comparable NA01 but observed values than NA01. fact, mean PAHs, urban-traffic site generally 2 times greater urban-background campaigns. 5 6 ring, many which are suspected carcinogens or genotoxic agents, (i.e Indeno[1,2,3-cd]Pyrene, Benzo[b]Fluoranthene, Benzo[k]Fluoranthene Benzo[g,h,i]Perylene), had large contribution (∼50–55%) total two sites Diagnostic PCA suggested substantial contributions emission minimal influence coal combustion natural gas emissions. particular diesel vehicular emissions major source at studied use Toxicity Equivalence Quantity (TEQ) provide better carcinogenicity activities; adults children inhalation assessed by taking into account lifetime average daily dose corresponding incremental cancer (ILCR). ILCR within acceptable range (10−6–10−4), indicating low residents these areas.