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http://dx.doi.org/10.3741/JKWRA.2004.37.11.959

The Concentrations and Loads of Pollutant in Wet Deposition in Cheongju  

Kim, Jin-Soo (충북대학교 지역건설공학과)
Oh, Seung-Young (충북대학교 농공학과)
Oh, Kwang-Young (충북대학교 농공학과)
Lee, Jong-Jin (충북대학교 농공학과)
Kim, Sun-Jong (한국철도기술연구원)
Cho, Jae-Won (충북대학교 농공학과)
Khan, Jong-Bum (충북대학교 농공학과)
Jeong, Gu-Young (충북대학교 농공학과)
Publication Information
Journal of Korea Water Resources Association / v.37, no.11, 2004 , pp. 959-967 More about this Journal
Abstract
The concentrations and loads of total nitrogen (TN), total phosphorus (TP), and chemical oxygen demand (COD) in wet deposition were investigated at Chungbuk National University in Cheongju, Chungbuk. Event based precipitation samples were collected during 1998 to 2003. The precipitation-weighted mean concentrations of pollutants were 0.60 mg/L for TN, 0.014 mg/L for TP, and 4.8 mg/L for COD, which were smaller than its arithmetic mean concentrations by 26% for TN, 18% for TP, and 14% for COD. The concentrations of TN, TP, and COD significantly decreased with precipitation. Mean concentrations of pollutants in spring (March-May) were higher than in other seasons likely due to dust caused by wind erosion and sand-dust storms, pollen etc. Significant relationships were determined between TN and TP, and TN and COD. Annual loads of wet deposition averaged 7.9 kg/ha$\cdot$yr for TN, 0.19 kg/ha$\cdot$yr for TP, and 63.9 kg/ha$\cdot$yr for COD, which are almost identical to the values of TN and TP but slightly higher than COD value reported in Japan.
Keywords
wet deposition load; total nitrogen; total phosphorus; precipitation-weighted mean concentration;
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