Akademik Veri Yönetim Sistemi
FRESENIUS ENVIRONMENTAL BULLETIN, cilt.24, sa.5, ss.1725-1734, 2015 (SCI-Expanded)
Atmospheric dry deposition of polycyclic aromatic hydrocarbons (PAHs) from traffic sources was investigated for the first time using a surrogate snow surface sampler at different distances (10 m, 100 m, and 400 m) from a highway with a heavy traffic load near the city center of Erzurum. The snow sampling was carried out twice. In the first sampling, fresh snow was taken immediately after heavy snow and placed in aluminum trays. The snow layer in the trays was used to obtain a dry surrogate surface. The second sampling was based on the extraction and analysis of 8-day-old snow subjected to dry deposition in aluminum trays. There were no significant differences in the concentrations of PAR compounds in the fresh snow samples, whereas there were significant differences in those measured in the aged snow samples at the end of the 8-day dry deposition period. The PAR concentration in the aged snow samples was 2-fold higher than that in the fresh snow samples. Most PAR compounds in fine particulate matter (PM) were detected 100 m and 400 m from the highway. In contrast, most PAR compounds in coarse PM were detected 10 m and 100 m away, possibly due to drifting from the 10 m point. Based on the source of the pollutants and the concentrations of PAHs, the PAHs sampled 10 m and 100 m from the highway were petrogenic, whereas those sampled 400 m away were pyrogenic.