Study on the Concentration Variation of HCFC-22 in the Atmosphere

The temporal and spatial variation of HCFC22 in the atmosphere is discussed. Latitudinal samplings were done along the Antarctic exploration route, and long term monitoring was also done in Shanghai City. The air samples were analysed with an oxygeninduced GCECD system. Analysis of latitudinal samplings showed that the HCFC22 concentration in the northern hemisphereis much higher than that of the southern hemisphere. Along the sampling route to the Antarctica, samples close to land have higher concentrations than those far from land. A certain period of HCFC22 monitoring in Shanghai City indicated that the HCFC22 concentration in Shanghai City was ascending.