Concentration levels of Polycyclic Aromatic Hydrocarbons in Airborne Dust in the Kitakyushu District
スポンサーリンク
概要
- 論文の詳細を見る
Concentration levels of polycyclic aromatic hydrocarbons (PAH) in airborne dust samples taken from the Kitakyushu district were determined from Oct. 1976 to Jan. 1978. Airborne dust samples collected on glass fiber filters by high volume air samplers were treated with benzene extraction and silica gel column chromatography. Thierteen PAH in the aromatic fractions were determined by flame ionization gas chromatography with a glass capillary (G-SCOT) column. Following results were obtained.<BR>1) High concentration levels of benzo (b) fluorathene (B (b) F) were found in each sample compared with the other PAH. Geometrical average values of this I3 (b) F in each station distributed from 17.0 to 1.23μg/1000m<SUP>3</SUP>.<BR>2) Relative abundance of 13 PAH in airborne dust were similar among the samples from each sampling station. This fact suggested that PAH in airborne dust were widely diffused and equalized in the district.<BR>3) Concentration levels of 13 PAH in airborne dust samples were high in autumn to winter, and low in spring to summer. High concentration levels of PAH were found in industrialized and heavey traffic areas.<BR>4) To investigate daily variation of PAH concentrations, airborne dust samples were collected for seven days successively in summer and winter (the filter was changed every twenty-four hours). PAH concectrations were affected remarkably by meteological conditions, such as wind direction and weather.
- 社団法人 大気環境学会の論文
社団法人 大気環境学会 | 論文
- Spatio-Temporal Variations of Daily Average Concentration of NO2 in an Area with Trunk Roads
- Autoxidation of Methyl linoleate Initiated by Combustion Smoke of Combustibles
- Spatio-Temporal Variations of Daily Average of NO2Concentration in the Vicinity of a Crossroads
- Long-lived Gas-phase Radicals from Combustion
- Effective Combinations of Trapping Adsorbents and Extractive Solvents for Measuring Airborne Pesticides