抄録
The distributions of fluorocarbons (CCl2F2 and CCL3F) in the urban air over the Kitakyushu district were investigated.
Average concentrations were found to be 0.46 and 0.34 ppb at commercial and residential districts for CCl2F2, and, 0.20 and 0.16 ppb at commercial and residential districts for CCl3F, respectively. The average ratio of CCl2F2/CCl3F was 2.3 and 2.2 at commercial and residential districts, respectively. There was no significant difference between the ratios of CCl2F2/CCl3F of the two districts.
Also, the diurnal variations of concentration of the fluorocarbons were investigated. Sometimes, high concentrations of CCl2F2 and CCl3F were recorded, which were probably due to release of the propellant of aerosol products and/or temporary release of the refrigerant of containers.
