Monitoring of air pollutants at Kosan, Cheju Island, Korea during March-April, 1994

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:466189

Kim, Y P; Shim, S G; Moon, K C ^[1]

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1. and others

Gaseous species and total suspended particles were measured at Kosan, Cheju Island, Korea between March 11 and April 19, 1994. Concentrations of non sea salt (Nss) ions were higher than those measured at clean marine areas in Japan and other background marine areas in the world. Especially, nss sulfate concentration is comparable to those measured at Seoul, the capital city of Korea with about ten million inhabitants. Nss sulfate concentration shows strong correlation with nss potassium concentrations while shows no apparent correlation with nss calcium concentrations. Nss calcium concentrations shows strong correlation with nss potassium and nss magnesium concentrations. it is deduced that nss potassium has two origins, one anthropogenic, the other crustal, with higher contribution from anthropogenic sources. The average SO{sub 2} and NO{sub x} concentrations were about 0.97 ppb and 3.5 ppb, respectively. Average NO concentration was below the detection limit of TECO 42 analyzer. The concentrations of SO{sub 2} and NO{sub x} were lower than those at other urban area in Korea but higher than other remote areas in the world. Average O{sub 3} concentration was about 55 ppb, comparable to those at remote marine areas in the world. Back trajectory analysis results show the trajectories of air parcel during the measurement period were mostly originated from China. It is shown that cases of high nss sulfate with high nss calcium can occur when an air parcel originated from and semi-arid regions of northwestern China or Mongolia passes through northeastern China.

• OSTI ID: 466189
• Report Number(s): CONF-9606185--
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
AIR POLLUTION MONITORING
ECOLOGICAL CONCENTRATION
GREENHOUSE GASES
PARTICULATES
REPUBLIC OF KOREA