Atmospheric concentrations, dry deposition and air-soil exchange of polycyclic aromatic hydrocarbons (PAHs) in an industrial region in Turkey

Bozlaker A., Muezzinoglu A., ODABAŞI M.

JOURNAL OF HAZARDOUS MATERIALS, cilt.153, sa.3, ss.1093-1102, 2008 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 153 Sayı: 3
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1016/j.jhazmat.2007.09.064
  • Dergi Adı: JOURNAL OF HAZARDOUS MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1093-1102
  • Anahtar Kelimeler: atmospheric PAHs, dry deposition flux, deposition velocity, soil-air partitioning, fugacity ratio, SEMIVOLATILE ORGANIC-COMPOUNDS, ORGANOCHLORINE PESTICIDES, PARTITION-COEFFICIENT, POLYCHLORINATED-BIPHENYLS, ALIPHATIC-HYDROCARBONS, AGRICULTURAL SOILS, PARTICULATE MATTER, EQUILIBRIUM STATUS, URBAN ATMOSPHERE, CHICAGO AIR
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

Concurrent ambient air and dry deposition samples were collected during two sampling periods at the Aliaga industrial region in Izmir, Turkey. Sigma(15)-PAH (particulate + gas) concentrations ranged between 7.3 and 44.8 ng m-3 (average +/- S.D., 25.2 +/- 8.8 ng m(-3)) and 10.2-71.9 ng m(-3) (44.1 +/- 16.6 ng m(-3)) in summer and winter, respectively. Winter/summer individual ambient PAH concentration ratios ranged between 0.8 (acenaphthene) and 6.6 (benz[a]anthracene) indicating that wintertime concentrations were affected by residential heating emissions. In contrast to the ambient concentrations, Sigma(15)-PAH particle dry deposition fluxes were higher in summer (5792 +/- 3516 ng m(-2) day(-1), average +/- S.D.) than in winter (2650 +/- 1829 ng m(-2) day(-1)), probably due to large particles from enhanced re-suspension of polluted soil particles and road dust. Average overall dry deposition velocity of PAHs calculated using the dry deposition fluxes and particle-phase concentrations was 2.9 +/- 3.5 cm s(-1). Sigma(15)-PAH concentrations in soils taken from 50 points in the area ranged between 11 and 4628 mu g kg(-1) in dry weight. The spatial distribution of these concentrations indicated that the urban Aliaga, steel plants, the petroleum refinery, and the petrochemical plant are the major Sigma(15)-PAH sources in the area. Fugacity calculations in air and soil showed that the soil acts as a secondary source to the atmosphere for low molecular weight PAHs in summer and as a sink for the higher molecular weight ones in summer and winter. (C) 2007 Elsevier B.V. All rights reserved.