수원지역 빗물의 중금속 함량 평가

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정구복;이종식;김원일;김진호;윤순강
Jung, Goo-Bok;Lee, Jong-Sik;Kim, Won-Il;Kim, Jin-Ho;Yun, Sun-Gang

  • 발행 : 2007.06.30

초록

수원지역 영농기 빗물의 중금속 농도 및 부하특성을 구명하기 위하여 2002과 2003년 $4\sim10$월 사이에 빗물을 채수하여 빗물의 중금속 분포와 가중평균 변화, 화학성분과의 관계 및 부하정도를 비교 검토하였다. 빗물 중 화학성분 함량은 조사 시기에 따라 함량변이가 심하였고, 강우량 대비 pH의 가중평균은 $4.7\sim5.5$ 수준이었다. 빗물의 중금속 가중평균은 Zn>Pb>Cu>Ni>Cr>As>Cd 순이었고, 2002년과 비교하여 2003년에 Cd, Cu 및 As 성분이 상대적으로 높게 나타났다. 강우중의 주 이온성분과 중금속 함량의 관계는 모든 성분에서 정의 상관을 보였고, 상관계수로 볼 때 As, Cd, Cu, Zn 및 Ni 성분이 Pb 및 Cr보다 상대적으로 상관성이 큰 것으로 나타났다. 강우중의 중금속 농도분포를 이해하기 위하여 부하계수(Enrichment factors)를 조사한 결과, 부하계수 평균치가 대체로 Cd>Pb>As>Cu>Zn>Ni>Cr 순이었고, 주로 자연적 발생 유래원소로 알려진 Fe, Mg 및 Ca 등보다 상대적으로 높은 경향을 보였다. 월별 빗물의 중금속 부하계수는 봄철인 $4\sim5$월이 높았고, 중금속의 습식침적은 대체로 강우량의 영향을 받아 강우기인 6-8월에 높은 경향을 보였다.

키워드

rainwater;heavy metal;enrichment factor;flux

참고문헌

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피인용 문헌

  1. 1. Characteristics of heavy metal contamination by anthropogenic sources in artificial lakes of urban environment vol.20, pp.1, 2016, doi:10.5338/KJEA.2007.26.2.116
  2. 2. Factors influencing atmospheric wet deposition of trace elements in rural Korea vol.116, 2012, doi:10.5338/KJEA.2007.26.2.116
  3. 3. Current research trends for heavy metals of agricultural soils and crop uptake in Korea vol.31, pp.1, 2012, doi:10.5338/KJEA.2007.26.2.116
  4. 4. Wet Deposition of Heavy Metals during Farming Season in Taean, Korea vol.30, pp.2, 2011, doi:10.5338/KJEA.2007.26.2.116