Journal of Environmental Science International pISSN: 1225-4517 eISSN: 2287-3503 23(1); 69~79; January 2014 http://dx.doi.org/10.5322/JESI.2014.23.1.69 ORIGINAL ARTICLE 2009년 부산지역 강수의 화학적 특성 정운선 ․박성화 1) ․강덕두 1) ․이동인 * ․김동철 2) 부경대학교 환경대기과학과, 1) 부경대학교 지구환경공학연협동과정, 2) USRA Characterization of Chemical Properties of Precipitation at Busan, Korea, 2009 Woon-Seon Jung, Sung-Hwa Park 1) , Deok-Du Kang 1) , Dong-In Lee * , Dongchul Kim 2) Department of Environmental Atmospheric Sciences, Pukyong National University, Busan 608-737, Korea 1) Interdisciplinary Program of Earth Environmental Engineering, Pukyong National University, Busan 608-737, Korea 2 Universities Space Research Association, Columbia, MD, 21044, USA Abstract The seasonal variation of pH and ion components in precipitation were investigated from January to December 2009 at Busan, Korea. The precipitation was acidic with a volume-weighted mean pH concentration of 5.32, which ranged from 3.79 to 8.66. The volume-weighted mean conductivity showed 86.77 μS/cm and indicated higher concentration about 96.69 μS/cm in summer. The volume-weighted mean equivalent concentration of components followed the order: K + > Ca 2+ > nss-Ca 2+ > NH4 + > Mg 2+ > Na + > Li + in cations and Cl - > SO4 2- > nss-SO4 2- > NO3 - > NO 2- > F - > Br - in anions. Particularly, concentration of K + and Cl - showed 56 and 78 % in cations and anions. The higher concentration in K + , Na + , Mg 2+ and Cl - were shown in Busan city as compared to the other cities. The neutralization factors have been found to have higher value for potassium ion in winter compared with different seasons, indicating significant neutralization of acidic components over the region by potassium. Therefore, the precipitation characteristics at Busan had both continental and coastal as consequence of pH, conductivity and ionic analyses. Key words : Precipitation, pH, Electric conductivity, Ionic components 1. 서 론 1) 대기 중에 부유하는 오염질은 습성침적과 건성 침적의 형태로 지에 도달하게 된다. 특히, 습성침적 (Wet deposition)은 가스상과 입자상 질을 용해 또 는 혼합하여 대기 중에 부유하는 오염을 제거시키 거나 이동시키는 역할을 한다. 이는 강수에 의해 오염 질이 지에 도달함으로서, 강수 통해 대기 중 오 염정도 알 수 있게 된다. 한도에서 이와 관련한 연구는 한도 경지역 강수 중 수용성 이온성분의 화학적 특성 분석 ( 등, 2002), 한도 경지역 (안, 울진, 고산) 강수의 산 성도와 화학특성 (김 등, 2006), 제주도에서의 빗 이 온 농도 분석 (심 등, 1994), 1998-2004년 철에 한라 Received 24 May, 2013; Revised 3 September, 2013; Accepted 9 September, 2013 * Corresponding author : Dong-In Lee, Department of Environmental Atmospheric Sciences, Pukyong National University, Busan 608-737, Korea Phone: +82-51-629-6639, Fax : +82-51-625-2665 E-mail: leedi@pknu.ac.kr ⓒ The Korean Environmental Sciences Society. All rights reserved. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http:// creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.