A Trace Analysis of Volatile Organic Compounds in Soil Gas by Carbonaceous Resin Adsorbing and Thermal Desorbing Method.

概要

論文の詳細を見る
An analytical method using carbonaceous resin as an adsorbent was examined for determination of volatile organic compounds (VOCs) in soil gas. The compounds adsorbed on the resin were desorbed by heating at 280°C and analyzed simultaneously by GC/MS. The sensitivity of this method is 1000 times higher than the method with <I>n</I>-hexane trap or commercial detector tube. This method was applied to the determination of tetrachloroethylene (PCE) in a field. The PCE could be measured below the detection limit of commercial detector tube analysis. The method was also used to analyze VOCs in a region of Fukuoka city for search of an unknown pollution site. The area was divided by a 2 km mesh and the soil gas was collected in each square. The concentrations of 1, 1, 1-trichloroethane and trichloroethylene (TCE) in the soil gas were higher than those in the atmosphere at several points, suggesting pollutions of soil or groundwater with these compounds.
日本環境化学会の論文