Abstract
Chemical speciation and concentrations of reactive gaseous mercury (RGM) in the urban atmospheric boundary layer (ABL) have been modeled using a photochemical box model. Measurements for gaseous elemental mercury (GEM) and the relevant trace gases were carried out in Seoul (37.6°N, 127°E), Korea, during a one-year period from March 2001 to February 2002. A moderately strong inverse correlation between GEM (Hg(0)) and ozone was observed in the spring. In addition, it was also observed that there were distinct GEM concentration differences between day and night, especially in the winter. Model simulations suggested that the most dominant sink of elemental mercury (Hg(0)) was the reaction with O 3, which in turn contributed significantly to the formation of mercury oxide (HgO). The dominant RGM species in the urban ABL are likely to be HgO and Hg(HO) 2. Seasonally averaged concentrations of HgO and Hg(HO) 2 are estimated to range from 0.5×10 4 to 1.1×10 4 and 0.2×10 4 to 3.5×10 4 molecules cm -3, respectively. According to our model simulations, most RGM species are expected to exhibit relatively enhanced concentrations during the daytime compared to the nighttime.
| Original language | English |
|---|---|
| Pages (from-to) | 749-761 |
| Number of pages | 13 |
| Journal | Atmospheric Environment |
| Volume | 39 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2005 Feb 1 |
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Keywords
- Gaseous elemental mercury
- Halogen
- Photochemical box model
- Reactive gaseous mercury
- Urban
ASJC Scopus subject areas
- Atmospheric Science
- Environmental Science(all)
- Pollution
Cite this
Modeling study of reactive gaseous mercury in the urban air. / Shon, Zang Ho; Kim, Ki Hyun; Kim, Min Young; Lee, Meehye.
In: Atmospheric Environment, Vol. 39, No. 4, 01.02.2005, p. 749-761.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Modeling study of reactive gaseous mercury in the urban air
AU - Shon, Zang Ho
AU - Kim, Ki Hyun
AU - Kim, Min Young
AU - Lee, Meehye
PY - 2005/2/1
Y1 - 2005/2/1
N2 - Chemical speciation and concentrations of reactive gaseous mercury (RGM) in the urban atmospheric boundary layer (ABL) have been modeled using a photochemical box model. Measurements for gaseous elemental mercury (GEM) and the relevant trace gases were carried out in Seoul (37.6°N, 127°E), Korea, during a one-year period from March 2001 to February 2002. A moderately strong inverse correlation between GEM (Hg(0)) and ozone was observed in the spring. In addition, it was also observed that there were distinct GEM concentration differences between day and night, especially in the winter. Model simulations suggested that the most dominant sink of elemental mercury (Hg(0)) was the reaction with O 3, which in turn contributed significantly to the formation of mercury oxide (HgO). The dominant RGM species in the urban ABL are likely to be HgO and Hg(HO) 2. Seasonally averaged concentrations of HgO and Hg(HO) 2 are estimated to range from 0.5×10 4 to 1.1×10 4 and 0.2×10 4 to 3.5×10 4 molecules cm -3, respectively. According to our model simulations, most RGM species are expected to exhibit relatively enhanced concentrations during the daytime compared to the nighttime.
AB - Chemical speciation and concentrations of reactive gaseous mercury (RGM) in the urban atmospheric boundary layer (ABL) have been modeled using a photochemical box model. Measurements for gaseous elemental mercury (GEM) and the relevant trace gases were carried out in Seoul (37.6°N, 127°E), Korea, during a one-year period from March 2001 to February 2002. A moderately strong inverse correlation between GEM (Hg(0)) and ozone was observed in the spring. In addition, it was also observed that there were distinct GEM concentration differences between day and night, especially in the winter. Model simulations suggested that the most dominant sink of elemental mercury (Hg(0)) was the reaction with O 3, which in turn contributed significantly to the formation of mercury oxide (HgO). The dominant RGM species in the urban ABL are likely to be HgO and Hg(HO) 2. Seasonally averaged concentrations of HgO and Hg(HO) 2 are estimated to range from 0.5×10 4 to 1.1×10 4 and 0.2×10 4 to 3.5×10 4 molecules cm -3, respectively. According to our model simulations, most RGM species are expected to exhibit relatively enhanced concentrations during the daytime compared to the nighttime.
KW - Gaseous elemental mercury
KW - Halogen
KW - Photochemical box model
KW - Reactive gaseous mercury
KW - Urban
UR - http://www.scopus.com/inward/record.url?scp=12144257641&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=12144257641&partnerID=8YFLogxK
U2 - 10.1016/j.atmosenv.2004.09.071
DO - 10.1016/j.atmosenv.2004.09.071
M3 - Article
AN - SCOPUS:12144257641
VL - 39
SP - 749
EP - 761
JO - Atmospheric Environment
JF - Atmospheric Environment
SN - 1352-2310
IS - 4
ER -