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• W235497387 abstract "최근 급속한 산업화가 진행되고 있는 중국의 편서풍 영향하에 위치한 우리나라의 경우에는 장거리 이동에 따른 강우의 산성도 변화 및 예상되는 피해에 대한 대책 마련을 위하여 강우의 화학성에 대한 지속적인 모니터링이 필요하다. 본 연구는 경기도 수원지역 강우의 산성도 및 주요 이온조성을 평가하기 위하여 wet sampling 방식의 자동채취기를 사용하여 2006년 4월부터 12월까지의 빗물 42점을 채취하였다. 각 시료의 pH 및 주요 이온 성분에 대한 강우량 가중평균치의 월별 변화를 조사하였으며, pH 분포와EC의 계절적 특성을 평가하였다. 빗물 중 양이온과 음이온의 균형비(ion balance)와 전기전도도 균형비(electrical conductivity balance)가 1에 가까운 값을 보여 분석의 높은 신뢰성을 나타내었다. 조사기간 중 평균 pH값은 4.7을 보였다. 빗물의 EC는 조사기간 평균 <TEX>$17.6{mu}S;cm^{-1}$</TEX>을 나타냈으며, 월별로는7월에 <TEX>$9.1{mu}S;cm^{-1}$</TEX>로 조사기간 중 가장 낮은 값을 보였으며, 11월 이후에 급격히 높아져 EC의 계절적 특성을 보였다. 빗물의 조성에서 양이온 구성은 <TEX>$Na^+</TEX><TEX>></TEX><TEX>NH_4{^+}</TEX><TEX>></TEX><TEX>Ca^{2+}</TEX><TEX>></TEX><TEX>H^+</TEX><TEX>></TEX><TEX>Mg^{2+}</TEX><TEX>></TEX><TEX>K^+$</TEX>의 순이었으며, <TEX>$Na^+$</TEX> 와 <TEX>NH_4{^+}$</TEX>가 전체 양이온 함량의 65% 이상을 차지 하였다. 음이온은 <TEX>$SO_4{^{2-}}</TEX><TEX>></TEX><TEX>NO_3{^-}</TEX><TEX>></TEX><TEX>Cl^-$</TEX> 순으로 <TEX>$SO_4{^{2-}}$</TEX>가 약 67%를 차지하였다. 조사기간 중 평균 sulfate 함량은 <TEX>$119.0{mu}eq;L^{-1}$</TEX>이었으며, 이중 비해염 sulfate(nss-<TEX>$SO_4$</TEX>) 함량은 평균 94%로 빗물 중에 함유된 sulfate의 대부분이 인위적인 발생원에서 기인되었다. To evaluate the acidity and chemical characteristics of rainwater in Korea, its pH and ion concentrations were investigated in Suwon from April to December, 2006. In addition, to estimate the contribution of ions on its acidity, ion composition and neutralization effect of major cations were investigated. Ion balance and electrical conductivity balance between measured and estimated values showed a high correlation. The mean pH and EC in rainwater collected during the investigation periods were 4.7 and <TEX>$17.6{mu}S;cm^{-1}$</TEX>, respectively. The monthly variation in EC showed a clear seasonal pattern, which had the lowest value of <TEX>$9.1{mu}S;cm^{-1}$</TEX> in July and increased remarkably in November. <TEX>$Na^+$</TEX> was the most abundant cation and followed by <TEX>$NH_4{^+}</TEX><TEX>></TEX><TEX>Ca^{2+}</TEX><TEX>></TEX><TEX>H^+</TEX><TEX>></TEX><TEX>Mg^{2+}</TEX><TEX>></TEX><TEX>K^+$</TEX>. Among them, <TEX>$Na^+$</TEX> and <TEX>$NH_4{^+}$</TEX> accounted for more than 65% of the total cations. In case of anions, the relative abundance was <TEX>$SO_4{^{2-}}</TEX><TEX>></TEX><TEX>NO_3{^-}</TEX><TEX>></TEX><TEX>Cl^-$</TEX>. About 67% of the total anions in rainwater was <TEX>$SO_4{^{2-}}$</TEX>, which showed <TEX>$119.0{mu}eq;L^{-1}$</TEX> as mean value during the monitoring periods. Furthermore, 94% of the soluble sulfate in rainwater was identified as nss-<TEX>$SO_4{^{2-}}$</TEX>(non-sea salt sulfate). We also found that <TEX>$NH_4{^+}$</TEX> and <TEX>$Ca^{2+}$</TEX> contributed greatly in neutralizing the rain acidity, especially in dry season." @default.
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• W235497387 date "2008-09-30" @default.
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• W235497387 title "Chemical characteristics of Rainwater in Suwon" @default.
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• W235497387 doi "https://doi.org/10.5338/kjea.2008.27.3.239" @default.
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