Kim, Ki-Hyun Shon, Zang-Ho Hang Thi Nguyen Jung, Kweon Park, Chan-Goo Gwi Nam Bae 2024-01-20T16:30:34Z 2024-01-20T16:30:34Z 2021-09-05 2011-09-01 0048-9697 https://pubs.kist.re.kr/handle/201004/129995 Concentrations of total gaseous mercury (TGM) were measured continuously at four urban residential locations (G (Guro-gu); N (Nowon-gu); S (Songpa-gu); and Y (Yongsan-gu)) in Seoul, Korea from 2004 to 2009. The mean concentrations of Hg at these sites were found on the order of N (3.98 +/- 1.68 ng m(-3)), S (3.87 +/- 1.56 ng m(-3)), G (3.80 +/- 1.60 ng m(-3)), and Y (3.36 +/- 1.55 ng m(-3)). Evidence indicates that the spatial distribution of Hg should be affected by the combined effects of both local anthropogenic (incineration facilities and thermal power plants) and natural (soil) emission sources in association with the meteorological parameters. Inspection of the Hg temporal patterns indicates the co-existence of contrasting seasonal patterns between the central site Y (winter dominance) and all other outbound sites near city borders (summer dominance). The long-term trend of Hg, if examined by combining our previous studies and the presentone, shows that Hg levels in this urban area declined gradually across decadal periods despite slight variabilities in spatial scale: (1) above 10 ng m(-3) in the late 19805, (2) similar to 5 ng m(-3) in the late 1990s, and (3) similar to 3 ng m(-3) toward the late 2000s. The results of the principal component analysis along with observed differences in seasonal patterns (between study sites) suggest that Hg distributions between different urban sites are greatly distinguishable with strong source signatures at each individual site. (C) 2011 Elsevier B.V. All rights reserved. English ELSEVIER LONG-TERM CHANGES ATMOSPHERIC MERCURY ELEMENTAL MERCURY ANTHROPOGENIC SOURCES EMISSION INVENTORY DEPOSITION SPECIATION TRANSPORT GUIYANG TREND The effect of man made source processes on the behavior of total gaseous mercury in air: A comparison between four urban monitoring sites in Seoul Korea Article 10.1016/j.scitotenv.2011.05.055 1 SCIENCE OF THE TOTAL ENVIRONMENT, v.409, no.19, pp.3801 - 3811 SCIENCE OF THE TOTAL ENVIRONMENT 409 19 3801 3811 scie scopus 000295233900025 2-s2.0-80051787047 Environmental Sciences Environmental Sciences & Ecology Article LONG-TERM CHANGES ATMOSPHERIC MERCURY ELEMENTAL MERCURY ANTHROPOGENIC SOURCES EMISSION INVENTORY DEPOSITION SPECIATION TRANSPORT GUIYANG TREND Mercury Spatial Temporal Mann-Kendall Seoul Anthropogenic