Evalution of Acid Deposition in Korea

Authors: Park, C.J.1; Noh, H.R.2; Kim, B.G.2; Kim, S.Y.2; Jung, I.U.2; Cho, C.R.2; Han, J.S.2

Source: Water, Air, and Soil Pollution, Volume 130, Numbers 1-4, August 2001 , pp. 445-450(6)

Publisher: Springer

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Abstract:

This study was carried out to evaluate acid depositions and to understand their effect. Wet precipitation has been collected at twenty-four sites in Korea for one year of 1999. The ion concentrations such as H^+, Na^+, K^+, Mg^2+, NH_4^+, Ca^2+, Cl^−, NO_3^− and SO_4^2− were chemically analyzed and determined. Precipitation had wide range of pH(3.5∼8.5), and volume-weighted average was 5.2. The contribution amounts of Cl^−, SO_4^2− and NO_3^− in anion were shown to be 54%, 32%, and 14%, respectively and those of Na^+ and NH_4^+ in cation were 32% and 25%. The ratios of Cl^− and Mg^2+ to Na^+ in precipitation were similar to those of seawater, which imply that great amount of Cl^− and Mg^2+ in precipitation could be originated from seawater. The concentration of H^+ is little related with SO_4^2−, NO_3^− and Cl^− ions, whereas nss^−SO_4^2− and NO_3^− are highly correlated with NH_4^+, which could suggest that great amount of SO_4^2− and NO_3^− exist in the form of ammonium associated salt. The annual wet deposition amounts (g m^−2year^−1) of SO_4^2−, NO_3^−, Cl^−, H^+, NH_4^+, Na^+, K^+, Ca^2+ and Mg^2+ were estimated as 0.88∼4.89, 0.49∼4.37, 0.30∼9.80, 0.001∼0.031, 0.06∼2.15, 0.27∼4.27, 0.10∼3.81, 0.23∼1.59 and 0.03∼0.63.

Keywords: acidity; ammonium associated salt; precipitation; wet deposition

Document Type: Regular Paper

Affiliations: 1: Atmospheric Chemistry Division, Air Quality Research Department, National Institute of Environmental Research, Environmental Research Complex, Kyungse-dong, Se-gu, Incheon, 404-170, Republic of Korea e-mail: parkcj@me.go.kr 2: Atmospheric Chemistry Division, Air Quality Research Department, National Institute of Environmental Research, Environmental Research Complex, Kyungse-dong, Se-gu, Incheon, 404-170, Republic of Korea

Publication date: August 1, 2001

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