National Water-Quality Assessment (NAWQA) Program
Go to:
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 6. Denitrification rates from studies of various sand and gravel aquifers. Methods included slurry incubations, in-situ studies, excess N2 analyses, and tracer tests.
|
|
|
Denitrification rate mmol NO3- L-1 yr-1 |
|
|
Studies |
Method |
Minimum |
Maximum |
|
Vogel et al. (1981) |
Excess N2 and Tritium age dates |
NA |
0.0001 |
|
Trudell et al. (1986) |
In-situ study |
4.88 |
81.3 |
|
Gillham et al. (1990) |
In-situ study |
15.0 |
87.6 |
|
Bohlke and Denver (1995)† |
Excess N2 and CFC age dates |
0.001 |
0.01 |
|
Smith et al. (1996) |
Tracer study |
0.13 |
0.31 |
|
|
Slurry incubation |
0.53 |
1.23 |
|
|
Soil core incubation |
0.69 |
1.61 |
|
|
Soil core incubation |
1.38 |
3.22 |
|
Tesoriero et al. (2000) |
Excess N2 and CFC age dates |
0.01 |
0.14 |
|
|
Excess N2 and CFC age dates |
1.3 |
2.7 |
|
|
In-situ study |
NA |
140 |
|
Puckett et al. (2002) |
Slurry incubation |
0.99 |
34.46 |
|
This study |
Excess N2 and CFC age dates |
0.005 |
0.047 |
†Rates calculated from data provided by Bohlke and Denver
Return to main report.
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://water.usgs.gov/nawqa/nutrients/pubs/jeq_v31_no3/table6.html
Page Contact Information: gs-w_nawqa_whq@usgs.gov
Page Last Modified: Tuesday, 04-Mar-2014 14:44:12 EST
