Publications
Publications
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Evaluation of microtiter-plate enzyme-linked immunosorbent assay for the analysis of triazine and chloroacetanilide herbicides in rainfall Evaluation of microtiter-plate enzyme-linked immunosorbent assay for the analysis of triazine and chloroacetanilide herbicides in rainfall
Triazine and chloroacetanilide concentrations in rainfall samples collected from a 23-state region of the United States were analyzed with microtiter-plate enzyme-linked immunosorbent assay (ELISA). Thirty-six percent of rainfall samples (2072 out of 5691) were confirmed using gas chro matography/mass spectrometry (GC/MS) to evaluate the operating performance of ELISA as a screening test
Authors
M.L. Pomes, E.M. Thurman, D.S. Aga, D. A. Goolsby
Source and transport of desethylatrazine and desisopropylatrazine to groundwater of the midwestern United States Source and transport of desethylatrazine and desisopropylatrazine to groundwater of the midwestern United States
Based on usage of the parent compounds and studies of their dissipation in corn fields, atrazine (6-chloro-N-ethyl-N'-(1-methylethyl-1,3,5-triazine-2,4-diamine)), cyanazine (2-[[4-chloro-6-(ethylamino)-1,3,5-triazin-2-yl]amino]-2-methylpropionitrile), and simazine (6-chloro-N,N'diethyl-1,3,5-triazine-2,4-diamine) are thought to be the important contributors of desethylatrazine (6-chloro...
Authors
E.M. Thurman, D.W. Kolpin, D. A. Goolsby, M. T. Meyer
Nitrate concentrations in ground water in the paleovalley alluvial aquifers of the Nemaha Natural Resources District, Nebraska, 1989 and 1994-96 Nitrate concentrations in ground water in the paleovalley alluvial aquifers of the Nemaha Natural Resources District, Nebraska, 1989 and 1994-96
No abstract available.
Authors
A. H. Chen
Nitrate and other water-quality characteristics, and nitrogen in the unsaturated zone, in the Red Willow and Hitchcock counties Special Protection Area, southwest Nebraska, 1993-95 Nitrate and other water-quality characteristics, and nitrogen in the unsaturated zone, in the Red Willow and Hitchcock counties Special Protection Area, southwest Nebraska, 1993-95
No abstract available.
Authors
G. V. Steele
Contribution of hydroxylated atrazine degradation products to the total atrazine load in midwestern streams Contribution of hydroxylated atrazine degradation products to the total atrazine load in midwestern streams
The contribution of hydroxylated atrazine degradation products (HADPs) to the total atrazine load (i.e., atrazine plus stable metabolites) in streams needs to be determined in order to fully assess the impact of atrazine contamination on stream ecosystems and human health. The objectives of this study were (1) to determine the contribution of HADPs to the total atrazine load in streams...
Authors
R.N. Lerch, P.E. Blanchard, E.M. Thurman
Water-quality assessment of the Ozark Plateaus study unit, Arkansas, Kansas, Missouri, and Oklahoma — Nutrients, bacteria, organic carbon, and suspended sediment in surface water, 1993-95 Water-quality assessment of the Ozark Plateaus study unit, Arkansas, Kansas, Missouri, and Oklahoma — Nutrients, bacteria, organic carbon, and suspended sediment in surface water, 1993-95
Nutrient, bacteria, organic carbon, and suspended- sediment samples were collected from 1993-95 at 43 surface-water-quality sampling sites within the Ozark Plateaus National Water- Quality Assessment Program study unit. Most surface-water-quality sites have small or medium drainage basins, near-homogenous land uses (primarily agricultural or forest), and are located predominantly in the
Authors
Jerri V. Davis, Richard W. Bell
Water Resources Data, Kansas, Water Year 1997 Water Resources Data, Kansas, Water Year 1997
Water-resources data for the 1997 water year for Kansas consist of records of stage, discharge, and water quality of streams; elevation and contents of lakes and reservoirs; and water levels of ground-water wells. This report contains records for water discharge at 150 gaging stations; elevation and contents at 19 watershed lakes or reservoirs; and water-level data at 19 wells. Also...
Authors
J.E. Putnam, D.L. Lacock, D.R. Schneider, M.D. Carlson
Herbicides in Midwestern reservoir outflows, 1992-93 Herbicides in Midwestern reservoir outflows, 1992-93
No abstract available.
Authors
John K. Stamer, William A. Battaglin, Donald A. Goolsby
Water-table conditions, aquifer properties, and streambed permeability along the Republican River from near Hardy, Nebraska, to Concordia, Kansas Water-table conditions, aquifer properties, and streambed permeability along the Republican River from near Hardy, Nebraska, to Concordia, Kansas
No abstract available.
Authors
C. V. Hansen
Similar rates of decrease of persistent, hydrophobic and particle-reactive contaminants in riverine systems Similar rates of decrease of persistent, hydrophobic and particle-reactive contaminants in riverine systems
Although it is well-known that concentrations of anthropogenic radionuclides and organochlorine compounds in aquatic systems have decreased since their widespread release has stopped in the United States, the magnitude and variability of rates of decrease are not well-known. Paleolimnological studies of reservoirs provide a tool for evaluating these long-term trends in riverine systems...
Authors
Peter C. Van Metre, Jennifer T. Wilson, Edward Callender, Christopher C. Fuller
Selected surface-water, ground-water, and tracer data from the Elkhorn and Platte Rivers and the alluvium near Ashland, eastern Nebraska, 1991-97 Selected surface-water, ground-water, and tracer data from the Elkhorn and Platte Rivers and the alluvium near Ashland, eastern Nebraska, 1991-97
No abstract available.
Authors
Ingrid M. Verstraeten, C.P. Stanton, R.L. Atkeson
The environmental occurrence of herbicides: The importance of degradates in ground water The environmental occurrence of herbicides: The importance of degradates in ground water
Numerous studies are being conducted to investigate the occurrence, fate, and effects on human health and the environment from the extensive worldwide use of herbicides to control weeds. Few studies, however, are considering the degradates of these herbicides in their investigations. Our study of herbicides in aquifers across Iowa found herbicide degradates to be prevalent in ground...
Authors
D.W. Kolpin, E.M. Thurman, S. M. Linhart