Ghim, YS Kim, Jin Young 2024-01-21T11:12:58Z 2024-01-21T11:12:58Z 2021-09-05 2002-01 0256-1115 https://pubs.kist.re.kr/handle/201004/139887 While deposition is a removal process of pollutants from the atmosphere, it is an intake process of such pollutants into the ground. It is suggested that surface waters in the Greater Seoul Area, used as a source of drinking water, have been affected by severe air pollution. In this work, the dry deposition of reactive nitrogen and sulfur species was estimated for three typical days in each season for the year of 1997. The CTT (California Institute of Technology) photochemical model incorporated with a gaseous oxidation reaction of SO2 was used. The study revealed that reactive nitrogen deposition was the largest in summer and sulfur deposition was the largest in winter. Most of the reactive nitrogen was deposited in the form of HNO3 and NO2, but HNO3 deposition is highly dependent on the season according to the extent of photochemical production. On the other hand, the contribution of sulfate to the total deposition of sulfur was minimal partly because of low deposition velocity and of the neglect of possible inflow from the boundaries. Approximately 53% of the reactive nitrogen and 30% of the sulfur emitted in the study area was deposited in the ground in the dry form on an annual basis. English KOREAN INST CHEM ENGINEERS SOUTHERN CALIFORNIA KOREA MODEL Dry deposition of reactive nitrogen and sulfur compounds in the greater Seoul area Article 10.1007/BF02706874 1 KOREAN JOURNAL OF CHEMICAL ENGINEERING, v.19, no.1, pp.52 - 60 KOREAN JOURNAL OF CHEMICAL ENGINEERING 19 1 52 60 scie scopus kci ART000857127 000173666000008 2-s2.0-0036102910 Chemistry, Multidisciplinary Engineering, Chemical Chemistry Engineering Article SOUTHERN CALIFORNIA KOREA MODEL dry deposition air quality modeling acidic compounds photochemistry seasonal variation