Ambient concentration, dry deposition flux and overall deposition velocities of particulate sulfate measured at two sites

Tasdemir Y., Gunez H.

ATMOSPHERIC RESEARCH, vol.81, no.3, pp.250-264, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 81 Issue: 3
  • Publication Date: 2006
  • Doi Number: 10.1016/j.atmosres.2006.01.002
  • Journal Name: ATMOSPHERIC RESEARCH
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.250-264
  • Keywords: dry deposition, knife-edge surrogate surface, sulfate, urban and suburban, POLYCYCLIC AROMATIC-HYDROCARBONS, POLYCHLORINATED-BIPHENYLS PCBS, AIR-POLLUTION STATUS, SEA-SALT SULFATE, ATMOSPHERIC DEPOSITION, RURAL SITE, CHEMICAL-COMPOSITION, ORGANIC-COMPOUNDS, SIZE DISTRIBUTION, INDUSTRIAL-AREA
  • Bursa Uludag University Affiliated: Yes

Abstract

In this study, the particulate sulfate fluxes were measured employing the knife-edge surrogate surfaces (KSSs). The sampling program was conducted intermittently between September 2004 and March 2005 in the Uludag University campus and the city of Bursa, Turkey. Ambient air samples (n = 20) and deposition fluxes (n = 20) were sampled simultaneously at these two sites. Average particulate sulfate dry deposition fluxes for the campus and city were 30.9 +/- 34.2 (average +/- 1 S.D.) and 154.9 +/- 79.5 mg m(-2) day(-1), respectively. The measured fluxes were in general higher than those measured in other places. Concurrently, measured ambient air concentrations were 15.2 +/- 6.7 mu g m(-3) and 32.5 +/- 28.3 mu g m(-3) for the campus and the city, respectively. The city had higher ambient air sulfate concentrations and this was mainly due to its proximity to the sources of sulfur emissions and micrometeorological factors. The average overall sulfate dry deposition velocities, calculated by dividing the fluxes to the corresponding concentrations were 3.0 +/- 3.9 cm s(-1) for the campus and 7.5 +/- 4.0 cm s(-1) for the city. (c) 2006 Elsevier B.V. All rights reserved.