2009~2010년 제주지역 강우의 오염 특성 연구 (Pollution Characteristics of Rainwater at Jeju Island during 2009~2010)

서지정보

· 발행기관 : 한국대기환경학회
· 수록지 정보 : 한국대기환경학회지 / 29권 / 6호 / 818 ~ 829페이지
· 저자명 : 김기주, 강창희, 부준오, 김원형, 이윤상, 현동림

초록

The collection of rainwater samples was made at Jeju area during 2009~2010, and the major ionic species wereanalyzed. In the comparison of ion balance, conductivity, and acid fraction for the validation of analytical data, thecorrelation coefficients showed a good linear relationship within the range of 0.966~0.990. The volume-weightedmean pH and electric conductivity were 4.9 and 17.8 μS/cm, respectively, at the Jeju area. The volume-weightedmean concentrations of ionic species in rainwater were in the order of Cl-¤Na+¤nss-SO42-¤NH4+¤NO3-¤Mg2+¤H+¤nss-Ca2+¤HCOO-¤K+¤PO43-¤CH3COO-¤NO2-¤F-¤HCO3-¤CH3SO3-. The ionic strength ofrainwater was 0.26±0.21 mM during the study period. The composition ratios of ionic species were such as 50.1%for the marine sources (Na+, Mg2+, Cl-), 30.9% for the anthropogenic sources (NH4+, nss-SO42-, NO3-), and 4.7%for the soil source (nss-Ca2+), and 3.1% for organic acids (HCOO-, CH3COO-). From the seasonal comparison, theconcentrations of NO3-, nss-Ca2+, and nss-SO42- increased in winter and spring seasons, indicating a reasonablepossibility of long range transport from Asia continent. Especially, the acidifying contributions by major inorganicacids (nss-SO42- and NO3-) and organic acids (HCOO- and CH3COO-) were 87.6% and 12.4%, respectively. Incomparison by sectional inflow pathway of air mass during the rainy sampling days, the concentrations of nss-SO42-and NO3- were relatively high when the air mass was moved from the China continent into Jeju area.

영어초록

The collection of rainwater samples was made at Jeju area during 2009~2010, and the major ionic species wereanalyzed. In the comparison of ion balance, conductivity, and acid fraction for the validation of analytical data, thecorrelation coefficients showed a good linear relationship within the range of 0.966~0.990. The volume-weightedmean pH and electric conductivity were 4.9 and 17.8 μS/cm, respectively, at the Jeju area. The volume-weightedmean concentrations of ionic species in rainwater were in the order of Cl-¤Na+¤nss-SO42-¤NH4+¤NO3-¤Mg2+¤H+¤nss-Ca2+¤HCOO-¤K+¤PO43-¤CH3COO-¤NO2-¤F-¤HCO3-¤CH3SO3-. The ionic strength ofrainwater was 0.26±0.21 mM during the study period. The composition ratios of ionic species were such as 50.1%for the marine sources (Na+, Mg2+, Cl-), 30.9% for the anthropogenic sources (NH4+, nss-SO42-, NO3-), and 4.7%for the soil source (nss-Ca2+), and 3.1% for organic acids (HCOO-, CH3COO-). From the seasonal comparison, theconcentrations of NO3-, nss-Ca2+, and nss-SO42- increased in winter and spring seasons, indicating a reasonablepossibility of long range transport from Asia continent. Especially, the acidifying contributions by major inorganicacids (nss-SO42- and NO3-) and organic acids (HCOO- and CH3COO-) were 87.6% and 12.4%, respectively. Incomparison by sectional inflow pathway of air mass during the rainy sampling days, the concentrations of nss-SO42-and NO3- were relatively high when the air mass was moved from the China continent into Jeju area.

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