|
|||||
|
|
Evidence of Long-Range Transport of Pollutants from the Size-Fractionated Ionic Composition of Aerosols in the Jeju Island of Korea |
|
| Authors: | Hang T Nguyen C-H Kang C-J Ma Kum-Chan Choi Jin Seog Kim Joung Hae Lee Ki-Hyun Kim |
| Institution: | 1. Department of Earth & Environmental Sciences, Sejong University Seoul, Seoul, 143-747, South Korea 2. Department of Chemistry, Cheju National University, Jeju, 690-756, South Korea 3. Department of Environmental Science, Fukuoka Women’s University, Fukuoka, 813-8529, Japan 4. Department of Environmental Engineering, Donga University, Busan, 604-714, South Korea 5. Division of Quality of Life, Korea Research Institute of Standards and Science, Daejeon, 305-340, South Korea |
| Abstract: | The ionic composition of total suspended particulate (TSP) and fine (PM2.5) fractions was investigated from an 1,100 site in the middle of Mt. Halla in Jeju Island, Korea from March to November 2006. The sum concentrations of cation and anion species in TSP fraction were 205 ± 170 and 183 ± 164 neq m?3, respectively, while those for PM2.5 as 118 ± 129 and 88.5 ± 89.3 neq m?3, respectively. In TSP, the concentration of the major ions changed in the order of SO4 2? > NH4 + > Ca2+ > Na+ > NO3 ? > Mg2+ > K+ > Cl?, while its PM2.5 counterpart as NH4 + > SO4 2? > Ca2+ > NO3 ? > Na+ > Mg2+ > K+ > Cl?. Inspection of the temporal variabilities of ionic components indicated that most ions peaked in spring or fall months. The back trajectory analysis showed that the atmospheric composition of the major ionic species was affected fairly sensitively by long-range transport from China under the favorable meteorological conditions. In contrast, the lowest ionic concentration levels were seen most abundantly, when air masses passed from South Sea. Hence, the analysis of ionic concentration data suggests that their distributions are controlled by the combined effects of various source processes including the most prominent Chinese origin and the meteorological condition favorable for such transport. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |