Effects of Air Pollution on Precipitation and Living Organisms in Seoul Area 4. Variation of Pb and Cd Contents in the Barks of Pinus densiflora

서울 地域의 大氣汚染이 降水와 生物에 미치는 영향 4. 地域別 소나무 樹皮의 Pb 와 Cd 의 含量變化

The contents of Pb and CD measured with the barks of Pinus densiflora in Seoul area, Yangjaedong area near the Kyungbu-highway, Mt. Keryong and Mt. Seolak area, from Sep. to Ock. in 1988. Pb contents in Seoul area were 17.8 ppm at Changkyungkung, 17.1 ppm at Chongamdong, 13.2 ppm at Mt. Kwanak, 7.6 ppm at Mt. Dobong and 3.7 ppm at Mt. Surak. Except Mt. Kwanak, the difference between areas of central and mountains in Seoul were high significant. Mt Seolak area also showed variations in Pb contents from 16.8 ppm to 32.1 ppm according to studied sites. Cd contents in Seoul area were 0.47 ppm at Changkyungkung, 0.65 ppm at Chongamdong, 0.61 ppm at Mt. Kwanak, 0.52 ppm at Mt. Dobong, 0.47 ppm at Mt. Surak. Therefore, Cd contents in Seoul area exhibited more variations between sampling plots than between the areas of central and mountains in Seoul. Mt Seolak area also showed variations from 0.20 ppm to 0.34 ppm in Cd contents, and it was the lowest in all the studied area.