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result sql = The ebullition of hydrogen, carbon monoxide, methane, carbon dioxide and total gaseous mercury from the Cornwall Area of Concern.
The ebullition of hydrogen, carbon monoxide, methane, carbon dioxide and total gaseous mercury from the Cornwall Area of Concern.
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char = m;code = 109
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char = ;code = 32
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char = );code = 41
char = .;code = 46
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char = u;code = 117
char = b;code = 98
char = b;code = 98
char = l;code = 108
char = i;code = 105
char = n;code = 110
char = g;code = 103
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char = f;code = 102
char = ;code = 32
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char = O;code = 79
char = ;code = 32
char = (;code = 40
char = 1;code = 49
char = .;code = 46
char = 6;code = 54
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char = m;code = 109
char = i;code = 105
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char = o;code = 111
char = g;code = 103
char = ;code = 32
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char = 2;code = 50
char = );code = 41
char = ;code = 32
char = h;code = 104
char = (;code = 40
char = -;code = 45
char = 1;code = 49
char = );code = 41
char = );code = 41
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = 1;code = 49
char = 0;code = 48
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = l;code = 108
char = d;code = 100
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char = ;code = 32
char = l;code = 108
char = e;code = 101
char = s;code = 115
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = m;code = 109
char = p;code = 112
char = o;code = 111
char = r;code = 114
char = t;code = 116
char = a;code = 97
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char = t;code = 116
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = C;code = 67
char = O;code = 79
char = ;code = 32
char = f;code = 102
char = l;code = 108
char = u;code = 117
char = x;code = 120
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = a;code = 97
char = s;code = 115
char = u;code = 117
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char = e;code = 101
char = d;code = 100
char = ;code = 32
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char = e;code = 101
char = r;code = 114
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char = o;code = 111
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char = d;code = 100
char = ;code = 32
char = f;code = 102
char = r;code = 114
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char = h;code = 104
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char = e;code = 101
char = r;code = 114
char = ;code = 32
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char = e;code = 101
char = t;code = 116
char = l;code = 108
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char = l;code = 108
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char = s;code = 115
char = s;code = 115
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = ;code = 32
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char = m;code = 109
char = i;code = 105
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char = r;code = 114
char = o;code = 111
char = g;code = 103
char = ;code = 32
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char = (;code = 40
char = -;code = 45
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char = (;code = 40
char = -;code = 45
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char = );code = 41
char = ;code = 32
char = w;code = 119
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char = r;code = 114
char = e;code = 101
char = ;code = 32
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char = l;code = 108
char = i;code = 105
char = g;code = 103
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char = b;code = 98
char = l;code = 108
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char = n;code = 110
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char = ;code = 32
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char = e;code = 101
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char = l;code = 108
char = ;code = 32
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char = h;code = 104
char = i;code = 105
char = s;code = 115
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char = t;code = 116
char = r;code = 114
char = a;code = 97
char = c;code = 99
char = e;code = 101
char = ;code = 32
char = g;code = 103
char = a;code = 97
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char = ;code = 32
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = t;code = 116
char = i;code = 105
char = g;code = 103
char = h;code = 104
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char = l;code = 108
char = y;code = 121
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char = l;code = 108
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char = e;code = 101
char = d;code = 100
char = ;code = 32
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char = y;code = 121
char = ;code = 32
char = m;code = 109
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char = o;code = 111
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char = m;code = 109
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char = o;code = 111
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result sql = This paper reports the first ebullitive fluxes of hydrogen (H2), carbon monoxide (CO), methane (CH4), carbon dioxide (CO2) and total gaseous mercury (TGM) from the Cornwall Area of Concern (CAC). Although sediments were contaminated with mercury, bubbling was a negligible source of mercury for the global atmosphere. Indeed, the average emission of TGM through ebullition was 0.04 pg m(-2) h(-1). Measurements of H2, CO, CH4 and CO2 trapped gas concentrations and fluxes were used as indicators of diagenesis processes. The CAC represented a significant regional source of CH4 since the estimated ebullitive fluxes (3.5 mg m(-2) h(-1)) were similar to the CH4 emissions measured above typical flooded freshwater wetlands. As molecular diffusion is known as the main pathway of CO2 transport from water to the atmosphere, CO2 ebullitive fluxes were weak (0.39 mg m(-2) h(-1)). Bubbling of CO (1.6 microg m(-2) h(-1)) was 10 folds less important than CO fluxes measured over flooded freshwater wetlands. Finally, H2 emissions (0.001 microg m(-2) h(-1)) were negligible since the level of this trace gas is tightly regulated by microorganisms in anaerobic environments.

Publication: Sci. Total Environ. 2007 Aug 1 ;381(1-3)::256-62.
Publication Date: 2007 Aug 1
Study Author(s): Poissant, Laurier;Constant, Philippe;Pilote, Martin;Canário, João;O'Driscoll, Nelson;Ridal, Jeff;Lean, David;
Institution: Science and Technology Branch, Environment Canada, 105 McGill street, 7th floor (Youville), Montréal, Québec, Canada H2Y 2E7. [email protected]
Shortcut link to this study:
This paper reports the first ebullitive fluxes of hydrogen (H2), carbon monoxide (CO), methane (CH4), carbon dioxide (CO2) and total gaseous mercury (TGM) from the Cornwall Area of Concern (CAC). Although sediments were contaminated with mercury, bubbling was a negligible source of mercury for the global atmosphere. Indeed, the average emission of TGM through ebullition was 0.04 pg m(-2) h(-1). Measurements of H2, CO, CH4 and CO2 trapped gas concentrations and fluxes were used as indicators of diagenesis processes. The CAC represented a significant regional source of CH4 since the estimated ebullitive fluxes (3.5 mg m(-2) h(-1)) were similar to the CH4 emissions measured above typical flooded freshwater wetlands. As molecular diffusion is known as the main pathway of CO2 transport from water to the atmosphere, CO2 ebullitive fluxes were weak (0.39 mg m(-2) h(-1)). Bubbling of CO (1.6 microg m(-2) h(-1)) was 10 folds less important than CO fluxes measured over flooded freshwater wetlands. Finally, H2 emissions (0.001 microg m(-2) h(-1)) were negligible since the level of this trace gas is tightly regulated by microorganisms in anaerobic environments.
PMID: 17499842

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