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result sql = A model approach for evaluating effects of remedial actions on mercury speciation and transport in a lake system.
A model approach for evaluating effects of remedial actions on mercury speciation and transport in a lake system.
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char = ;code = 32
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char = d;code = 100
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char = h;code = 104
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char = t;code = 116
char = i;code = 105
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char = w;code = 119
char = e;code = 101
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char = e;code = 101
char = ;code = 32
char = i;code = 105
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char = o;code = 111
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char = t;code = 116
char = ;code = 32
char = m;code = 109
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char = c;code = 99
char = h;code = 104
char = a;code = 97
char = n;code = 110
char = i;code = 105
char = s;code = 115
char = m;code = 109
char = s;code = 115
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char = f;code = 102
char = ;code = 32
char = H;code = 72
char = g;code = 103
char = ;code = 32
char = s;code = 115
char = p;code = 112
char = e;code = 101
char = c;code = 99
char = i;code = 105
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = i;code = 105
char = n;code = 110
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char = b;code = 98
char = o;code = 111
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char = h;code = 104
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
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char = w;code = 119
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = c;code = 99
char = o;code = 111
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char = u;code = 117
char = m;code = 109
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char = d;code = 100
char = ;code = 32
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char = e;code = 101
char = ;code = 32
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char = e;code = 101
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char = t;code = 116
char = h;code = 104
char = i;code = 105
char = c;code = 99
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char = s;code = 115
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char = i;code = 105
char = m;code = 109
char = e;code = 101
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char = ;code = 32
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char = t;code = 116
char = ;code = 32
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char = o;code = 111
char = a;code = 97
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char = i;code = 105
char = n;code = 110
char = g;code = 103
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char = i;code = 105
char = s;code = 115
char = ;code = 32
char = s;code = 115
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char = a;code = 97
char = d;code = 100
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char = ;code = 32
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char = a;code = 97
char = t;code = 116
char = u;code = 117
char = r;code = 114
char = a;code = 97
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char = a;code = 97
char = t;code = 116
char = t;code = 116
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char = u;code = 117
char = a;code = 97
char = t;code = 116
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char = o;code = 111
char = n;code = 110
char = ;code = 32
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char = o;code = 111
char = w;code = 119
char = e;code = 101
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char = n;code = 110
char = o;code = 111
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char = o;code = 111
char = s;code = 115
char = i;code = 105
char = t;code = 116
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char = e;code = 101
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char = m;code = 109
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char = a;code = 97
char = c;code = 99
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char = ;code = 32
char = f;code = 102
char = o;code = 111
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char = ;code = 32
char = r;code = 114
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char = a;code = 97
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char = o;code = 111
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char = f;code = 102
char = ;code = 32
char = H;code = 72
char = g;code = 103
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char = o;code = 111
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char = a;code = 97
char = m;code = 109
char = i;code = 105
char = n;code = 110
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char = e;code = 101
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char = u;code = 117
char = a;code = 97
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char = i;code = 105
char = c;code = 99
char = ;code = 32
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char = y;code = 121
char = s;code = 115
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char = e;code = 101
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char = a;code = 97
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char = p;code = 112
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char = e;code = 101
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char = i;code = 105
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char = h;code = 104
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char = r;code = 114
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char = i;code = 105
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char = ;code = 32
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char = n;code = 110
char = d;code = 100
char = ;code = 32
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char = a;code = 97
char = p;code = 112
char = p;code = 112
char = i;code = 105
char = n;code = 110
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char = <;code = 60
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char = /;code = 47
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result sql = This paper provides a model approach for understanding mercury cycling in aquatic systems. The information gained is then used for evaluating three remedial actions, namely, natural attenuation, dredging and capping. Onondaga Lake, NY was used as a model aquatic system. Mercury transport and speciation in both the water column and the benthic sediment were simulated by using a Water Quality Analysis Simulation Program. Model predictions for the water column generally agreed with the measured values reported in literature for Onondaga Lake. Sensitivity analyses of the model were conducted for determining the impact of transport mechanisms and speciation mechanisms. Advection, sorption and settling were important mechanisms of Hg transport in the water column. In the benthic sediment, settling of Hg from the water column was the most important input source of Hg. Reduction, methylation and demethylation were important mechanisms of Hg speciation in both the water column and the benthic sediment. Assuming that Hg loading is steady, natural attenuation showed no positive impact for remediation of Hg-contaminated aquatic systems as compared with dredging and capping.

Publication: Sci. Total Environ. 2004 Jul 5 ;327(1-3)::1-15.
Publication Date: 2004 Jul 5
Study Author(s): Kim, Daekeun;Wang, Qianrui;Sorial, George A;Dionysiou, Dionysios D;Timberlake, Dennis;
Institution: Department of Civil and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221-0071, USA.
Shortcut link to this study:
This paper provides a model approach for understanding mercury cycling in aquatic systems. The information gained is then used for evaluating three remedial actions, namely, natural attenuation, dredging and capping. Onondaga Lake, NY was used as a model aquatic system. Mercury transport and speciation in both the water column and the benthic sediment were simulated by using a Water Quality Analysis Simulation Program. Model predictions for the water column generally agreed with the measured values reported in literature for Onondaga Lake. Sensitivity analyses of the model were conducted for determining the impact of transport mechanisms and speciation mechanisms. Advection, sorption and settling were important mechanisms of Hg transport in the water column. In the benthic sediment, settling of Hg from the water column was the most important input source of Hg. Reduction, methylation and demethylation were important mechanisms of Hg speciation in both the water column and the benthic sediment. Assuming that Hg loading is steady, natural attenuation showed no positive impact for remediation of Hg-contaminated aquatic systems as compared with dredging and capping.
PMID: 15172567

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