National Water-Quality Assessment (NAWQA) Program
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Transport and Fate of Nitrate in a Glacial Outwash Aquifer in Relation to Ground-Water Age, Land Use Practices and Redox Processes
By Larry J. Puckett and Timothy K. Cowdery
[Journal of Environmental Quality, vol. 31, no. 3, p. 782-796 ]Table 5. Biogeochemical reactions determined from the
NETPATH modeling process. Reaction coefficients represent the amount in mmol L-1 of phases entering (positive
values) or leaving (negative values) solution.
Phases |
Models |
|||
1 |
2 |
3 |
4 |
|
CH2O |
1510 |
1510 |
1510 |
1510 |
CaCO3 |
357 |
259 |
759 |
† |
CaMg(CO3)2 |
201 |
250 |
† |
379 |
N2 |
-350 |
-350 |
-350 |
-350 |
CaSO4·2H2O |
23 |
23 |
23 |
23 |
KCl |
88 |
88 |
88 |
88 |
Ca/K Exchange |
† |
-49 |
201 |
-179 |
Mg/K Exchange |
-49 |
† |
-250 |
130 |
Ca+Mg/Na Exchange |
-17 |
-17 |
-17 |
-17 |
†Phase not included in the model
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