Measurements of the Degree of Atmospheric Pollution in Seoul, Korea

[摘要] The degree of atmospheric pollution from automobile engine exhausts has been measured at 1-ga, Eulchiro, Jung-ku, one of the heaviest traffic junctions in Seoul. By determining the concentrations of Pb, SO2, NO2, NO, CO and CO2 in atmospheric air measured are as follows: Pb, 21¡­2 ¥ìg./m3.; SO2, 0.33¡­0.001 ppm.; NO2, 0.20¡­< 0.01 ppm.; NO, 1.30¡­0.02 ppm.; CO, 40¡­< 5 ppm.; and CO2, 0.040¡­0.034%. The mean concentrations determined are as follows: Pb, 11 ¥ìg./m3.; SO2, 0.08 ppm.; NO2, 0.09 ppm.; NO, 0.37 ppm.; CO, 16 ppm. and CO2, 0.038%. Generally, the concentrations of Pb, NO2, NO, CO and CO2 are approximately proportional to the traffic density, vehicles passing per hour.

[学科分类] 化学（综合）