Zobrazeno 1 - 10
of 17
pro vyhledávání: '"R F, Spalding"'
Publikováno v:
Journal of contaminant hydrology. 220
Identification of the nitrate sources that adversely impact groundwater quality is a necessary first step in the control of this major worldwide pollutant. The impact of nitrate leachate from urea-ammonium nitrate (UAN) (50% urea-N, 25% ammonium-N, 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::a72a763669453eb644a61f608cad83dd
https://pubmed.ncbi.nlm.nih.gov/30591238
https://pubmed.ncbi.nlm.nih.gov/30591238
Autor:
H. K. Bates, R. F. Spalding
Publikováno v:
Journal of Environmental Quality. 27:174-182
Denitrification of 40 mg L -1 NO 3 -N groundwater in the vicinity of Central City, NE was stimulated with ethanol in in situ microcosms that were vibrated into the aquifer sediment and, thus, filled with a relatively undisturbed, saturated sand and g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4a3631ed4bbfa8c42ad456b7c14c814
https://doi.org/10.2134/jeq1998.00472425002700010025x
https://doi.org/10.2134/jeq1998.00472425002700010025x
Publikováno v:
Journal of Environmental Quality. 27:183-191
In multistep redox reactions, stable isotopes of the product species can provide insight into the complexities of the reaction. A method was developed that chromatographically separated nitrite (NO 2 - ) from nitrate (NO 3 - ) in quantities that perm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3482ab006aab4faf79bf34fc7e95dbea
https://doi.org/10.2134/jeq1998.00472425002700010026x
https://doi.org/10.2134/jeq1998.00472425002700010026x
Publikováno v:
Environmental Geology. 32:210-218
A nitrogen isotope study of soil water and groundwater in southern Indiana, USA, in 1991–1992 demonstrated considerable variations in nitrate degradation processes compared to an earlier investigation in 1986–1987. Although N-fertilizers were app
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5111d9af31b5358cca6912234bc551e4
https://doi.org/10.1007/s002540050209
https://doi.org/10.1007/s002540050209
Autor:
R. F. Spalding, L. Ma
Publikováno v:
Journal of Environmental Quality. 26:115-125
Elevated levels of herbicides in surface and groundwater are a concern in the Cornbelt in the USA. This study was conducted to interpret the herbicide behavior in a watershed system using data collected from runoff, Recharge Lake, and groundwater inf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1ae0b548b68389049a6c46194881881
https://doi.org/10.2134/jeq1997.00472425002600010018x
https://doi.org/10.2134/jeq1997.00472425002600010018x
Autor:
S. K. Widmer, R. F. Spalding
Publikováno v:
Journal of Environmental Quality. 24:445-453
The behavior of trace quantities of commonly detected herbicides and herbicide degradates was investigated in a shallow sand and gravel aquifer. In 1991, a solute pulse containig approximately 15 mg L -1 bromide, 3 μg L -1 atrazine (2-chloro-4-ethyl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03bd2f168811c92bc67cf65dc3a938a2
https://doi.org/10.2134/jeq1995.00472425002400030008x
https://doi.org/10.2134/jeq1995.00472425002400030008x
Publikováno v:
Journal of Environmental Quality. 24:439-444
An investigation of the fate and transport of trace quantities of commonly detected herbicides and herbicides degradates in groundwater under aquifer conditions was conducted in a shallow sand and gravel aquifer. Herbicides and a conservative tracer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::272bdc3f3691f3891bbf85bb65d63b08
https://doi.org/10.2134/jeq1995.00472425002400030007x
https://doi.org/10.2134/jeq1995.00472425002400030007x
Publikováno v:
ACS Symposium Series ISBN: 9780841238251
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd47e250f746b7c0161241150e0bd927
https://doi.org/10.1021/bk-2003-0850.ch010
https://doi.org/10.1021/bk-2003-0850.ch010
Publikováno v:
Journal of chromatography. A. 844(1-2)
Recent improvements in the LC-MS interface have increased the sensitivity and selectivity of this instrument in the analysis of polar and thermally-labile aqueous constituents. Determination of RDX, nitroso-RDX metabolites, and other munitions was en
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::09a8b4f6dcee73be952e9d04595358f9
https://pubmed.ncbi.nlm.nih.gov/10399325
https://pubmed.ncbi.nlm.nih.gov/10399325
Autor:
R. F. Spalding, M. E. Exner
Publikováno v:
Nitrate Contamination ISBN: 9783642760426
Nitrate is a highly mobile ion applied as fertilizer or derived by microbiologically induced oxidation of numerous nitrogen-containing chemicals. Because of the ubiquitous nature of nitrate sources, no American state is completely immune to nitrate c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fbc3a2af9e070b62ce60f2dd1842ee9
https://doi.org/10.1007/978-3-642-76040-2_2
https://doi.org/10.1007/978-3-642-76040-2_2