Editorial Type:
Article
Article Type:
Research Article

Monitoring of Air Pollutants at Kosan, Cheju Island, Korea, during March–April 1994

Y. P. Kim Environment Research Center, Korea Institute of Science and Technology, Sungbuku, Seoul, Korea

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S-G. Shim Environment Research Center, Korea Institute of Science and Technology, Sungbuku, Seoul, Korea

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K. C. Moon Environment Research Center, Korea Institute of Science and Technology, Sungbuku, Seoul, Korea

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C-G. Hu Department of Marine Environment Engineering, Cheju National University, Cheju, Korea

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C. H. Kang Department of Chemistry, Cheju National University, Cheju, Korea

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K. Y. Park Global Environmental Information Division, Systems Engineering Research Institute, Taejeom, Korea

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Print Publication:
01 Oct 1998
DOI:
https://doi.org/10.1175/1520-0450(1998)037<1117:MOAPAK>2.0.CO;2
Page(s):
1117–1126
Restricted access

Abstract

Gaseous species and total suspended particles were measured at Kosan, Cheju Island, Korea, between 11 March and 19 April 1994. The concentrations of nonsea salt (nss) ions were higher than those measured in clean marine areas of Japan and other background marine areas of the world. In particular, the nss sulfate concentration was comparable to that measured in Seoul. The average SO2 and NOx concentrations were approximately 0.97 and 3.5 ppb, respectively, which were lower than those at other urban areas in Korea but higher than those of other remote areas in the world. In contrast, the average O3 concentration was approximately 55 ppb, which is comparable to or higher than those at remote sites in Japan that were influenced by long-range transport of air pollutants. Half of the air parcels during the period were from northern China and about 30% of the air parcels from southern China. The main difference of air pollutant levels between the two areas was higher crustal species and lower nss sulfate concentrations for air parcels from northern China. The nss SO2−4 concentrations had a strong correlation with nss K+, NH+4, and O3 concentrations. In addition, the nss Ca2+ concentrations had a strong correlation with the nss K+ and nss Mg2+ concentrations. It was suggested that nss K+ had two sources:anthropogenic and crustal.

Corresponding author address: Dr. Y. P. Kim, Environment Research Center, Korea Institute of Science and Technology, 39-1, Hawolkokdong, Sungbuku Seoul 136-791, Korea.

Abstract

Gaseous species and total suspended particles were measured at Kosan, Cheju Island, Korea, between 11 March and 19 April 1994. The concentrations of nonsea salt (nss) ions were higher than those measured in clean marine areas of Japan and other background marine areas of the world. In particular, the nss sulfate concentration was comparable to that measured in Seoul. The average SO2 and NOx concentrations were approximately 0.97 and 3.5 ppb, respectively, which were lower than those at other urban areas in Korea but higher than those of other remote areas in the world. In contrast, the average O3 concentration was approximately 55 ppb, which is comparable to or higher than those at remote sites in Japan that were influenced by long-range transport of air pollutants. Half of the air parcels during the period were from northern China and about 30% of the air parcels from southern China. The main difference of air pollutant levels between the two areas was higher crustal species and lower nss sulfate concentrations for air parcels from northern China. The nss SO2−4 concentrations had a strong correlation with nss K+, NH+4, and O3 concentrations. In addition, the nss Ca2+ concentrations had a strong correlation with the nss K+ and nss Mg2+ concentrations. It was suggested that nss K+ had two sources:anthropogenic and crustal.

Corresponding author address: Dr. Y. P. Kim, Environment Research Center, Korea Institute of Science and Technology, 39-1, Hawolkokdong, Sungbuku Seoul 136-791, Korea.

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