FATE OF MERCURY IN THE ARCTIC Michael Evan ... - COGCI

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Figure 1. k rec / cm 3 molecule -1 s -1 10 -9 10 -10 10 -11 10 -12 10 -13 200 250 300 350 400 HgBr + Br recombination HgOH dissociation Hg + I recombination Hg + OH recombination HgI dissociation HgBr dissociation Hg + Br recombination 200 250 300 350 400 T / K Figure 1. Rate coefficients calculated using RRKM theory, plotted as a function of temperature for 10 6 10 4 10 2 10 0 10 -2 10 -4 10 -6 10 -8 10 -10 10 -12 10 -14 the recombination of Hg with Br, I and OH, and of HgBr with Br (solid lines, left-hand ordinate); and for the thermal dissociation of HgBr, HgI and HgOH (broken lines, right-hand ordinate). k diss / s -1 14
Figure 2. Temperature / K 300 280 260 240 220 200 180 10000 9000 8000 7000 6000 5000 4000 3000 2000 1000 900 800 700 600 500 400 300 200 100 90 80 706050 40 0.1 1 10 300 80 706050 40 30 20 100 90 30 200 20 80 70605040 30 109 8 7 6 5 109 8 7 6 4 20 1 0.9 0.8 1 0.9 0.8 280 260 240 220 200 180 0.1 1 10 [Br] / ppt Figure 2. Contour plot of the lifetime in hours for Hg 0 oxidation to HgBr2, plotted as a function of [Br] and temperature. 3 5 2 4 3 0.7 2 0.6 0.5 0.4 0.7 0.3 15
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Fate of Mercury in the Arctic FATE
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Submitted to Atmospheric Environmen
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1. Introduction Mercury in the atmo
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For all flux measurements, heating
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esponse switching valves supplied b
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3.1 RGM flux measurements The resul
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estimating for Alert an average spr
Page 159 and 160: References 1. Businger J.A. and Onc
Page 161 and 162: Table captions Table 1. RGM mass ra
Page 163 and 164: Figure 2. RGM pg m-3 350 300 250 20
Page 165 and 166: Table 2 DAYHOURMON avg.temp avg.WS
Page 167 and 168: Fate of Mercury in the Arctic Paper
Page 169 and 170: FIGURE 1. Schematic diagram of the
Page 171 and 172: mass flow controller to 10 L/min an
Page 173 and 174: FIGURE 3. Trends in Hg 0 (upper plo
Page 175 and 176: FIGURE 6. Trends in several Hg spec
Page 177 and 178: FIGURE 7. Spatial patterns in month
Page 179 and 180: (51) Ebinghaus, R.; Kock, H. H.; Te
Page 181 and 182: The fate of elemental mercury in Ar
Page 183 and 184: Ozone was measured with an UV absor
Page 185 and 186: demonstrating that BrO and ClO with
Page 187 and 188: In the model the removal of GEM lea
Page 189 and 190: 15. Kemp, K. and Wåhlin, P. Applic
Page 191 and 192: GEM, ng/m 3 Fig 3. GEM against ozon
Page 194 and 195: Fig. 6 Comparison of measured surfa
Page 198 and 199: Introduction The perennial oxidatio
Page 200 and 201: Ariya et al. (11) have shown recent
Page 202 and 203: Table 1 lists the binding energies
Page 204 and 205: and a classical densities of states
Page 206 and 207: The third point demonstrated in Fig
Page 208 and 209: 7. Lamborg, C. H.; Fitzgerald, W.;
Page 214 and 215: Asian Chemistry Letters vol. XX, No
Page 224 and 225: 496 M E Goodsite et al. In the pres
Page 226 and 227: 498 M E Goodsite et al. Figure 1 Th
Page 228 and 229: 500 M E Goodsite et al. observed a
Page 230 and 231: 502 M E Goodsite et al. Table 1 14C
Page 232 and 233: 504 M E Goodsite et al. annual reso
Page 234 and 235: 506 M E Goodsite et al. Table 2b Sa
Page 236 and 237: 508 M E Goodsite et al. Going from
Page 238 and 239: 510 M E Goodsite et al. dry mass. T
Page 240 and 241: 512 M E Goodsite et al. Figure 4 Hg
Page 242 and 243: 514 M E Goodsite et al. Koenig B, L
Page 246 and 247: 130 F. Roos-Barraclough et al. / Th
Page 258 and 259: ABSTRACT Mercury concentrations are
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INTRODUCTION Atmospheric pollution
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and the relative importance of natu
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corresponding to the alkaline igneo
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edges cut off the slices were dried
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Age dating using 14 C Plant macrofo
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espectively (Naucke et al., 1993).
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200 was in the range 1 to 3 :g/m 2
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unpublished data for these paramete
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leachable fraction, and 32.1 µg/g
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indicator of the concentration of a
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caused by the introduction of gasol
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porewaters reveals the influence of
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For example, Hg may become adsorbed
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of the GL profile. Comparison with
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further improve our knowledge of pr
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which are derived from them. In con
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ACKNOWLEDGEMENTS We are grateful to
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Bindler, R. (2003) Estimating the n
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of Southern Denmark. Goodsite, M.E.
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MacKenzie AB, Farmer JG, Sugden CL.
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Schroeder, W.H. and Munthe, J. (199
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Table 1. AMS 14 C dating of plant m
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Table 3. Pb isotope data of leachat
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esidual fractions of the “B” co
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Depth (cm) Depth (cm) a b 0 -10 -20
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Hg accumulation rate (µg/m2/yr) 10
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Depth (cm) a Pb/Zr = UCC Depth (cm)
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Depth (cm) a Depth (cm) b 0 -10 -20
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Depth (cm) Depth (cm) a b 0 -10 -20
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Saturday, 28 December 2002 (Revised
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INTRODUCTION Recent research utiliz
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In addition, the coring system incl
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and testing prior to the Carey Isla
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ACKNOWLEDGEMENTS Development of thi
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Fig. 5. The stainless steel (AISI 3
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Fig. 2. 13
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Fig. 4. 15
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Fig. 6. 17
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FATE OF MERCURY IN THE ARCTIC Michael Evan ... - COGCI

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