Publications
Below are the publications attributed to Kansas Water Science Center.
Filter Total Items: 1060
A first application of enzyme-linked immunosorbent assay for screening cyclodiene insecticides in ground water
A commercially available enzyme-linked immunosorbent assay (ELISA) plate kit for screening of cyclodiene insecticides (aldrin, chlordane, dieldrin, endosulfan, endrin, and heptachlor) was evaluated for sensitivity, cross reactivity, and overall performance using ground-water samples from a contaminated site. Ground-water contaminants included several pesticide compounds and their manufacturing by-
Authors
T. R. Dombrowski, E.M. Thurman, G. B. Mohrman
Evaluation of immunoassay for the determination of pesticides at a large-scale groundwater contamination site
Pesticide concentrations in ground water at Rocky Mountain Arsenal (RMA) near Denver, Colorado, were determined using solid-phase extraction (SPE) gas chromatography/mass spectrometry (GC/MS) procedures and enzyme-linked immunosorbent assay (ELISA) for cyclodiene insecticides and triazine herbicides. Matrix interferences resulted in inconclusive results for some GC/MS analyses due to baseline dist
Authors
T. R. Dombrowski, E.M. Thurman, G. B. Mohrman
Concentrations of selected herbicides, herbicide metabolites, and nutrients in outflow from selected midwestern reservoirs, April 1992 through September 1993
This data set consists of digital aquifer boundaries for the High Plains aquifer in the central United States. The High Plains aquifer extends from south of 32 degrees to almost 45 degrees north latitude and from 96 degrees 30 minutes to almost 104 degrees west longitude. The area covers 174,000 square miles and is present in Texas, Oklahoma, New Mexico, Kansas, Colorado, Nebraska, Wyoming, and So
Authors
E.A. Scribner, D. A. Goolsby, E.M. Thurman, M. T. Meyer, W.A. Battaglin
Occurrence of alachlor and its sulfonated metabolite in rivers and reservoirs of the midwestern United States: The importance of sulfonation in the transport of chloroacetanilide herbicides
Alachlor and its metabolite, 2-[(2',6'-diethylphenyl)- (methoxymethyl)amino]-2-oxoethanesulfonate (ESA), were identified in 76 reservoirs in the midwestern United States using immunoassay, liquid chromatography, and gas chromatography/mass spectrometry. The median concentration of ESA (0.48 ??g/L) exceeded the median concentration of alachlor (
Authors
E.M. Thurman, D. A. Goolsby, D.S. Aga, M.L. Pomes, M. T. Meyer
Identification of a new sulfonic acid metabolite of metolachlor in soil
An ethanesulfonic acid metabolite of metolachlor (metolachlor ESA) was identified in soil-sample extracts by negative-ion, fast-atom bombardment mass spectrometry (FAB-MS) and FAB tandem mass spectrometry (FAB-MS/MS). Production fragments from MS/MS analysis of the deprotonated molecular ion of metolachlor ESA in the soil extract can be reconciled with the structure of the synthesized standard. Th
Authors
D.S. Aga, E.M. Thurman, M.E. Yockel, L.R. Zimmerman, T.D. Williams
Cyanazine, atrazine, and their metabolites as geochemical indicators of contaminant transport in the Mississippi River
The geochemical transport of cyanazine and its metabolite cyanazine amide (CAM) was compared to atrazine and its metabolite deethylatrazine (DEA) at three sites in the Mississippi River basin during 1992 and six sites during 1993. The floods of 1993 caused an uninterrupted exponential decline in herbicide concentrations; whereas, in 1992 herbicide concentrations varied mostly in response to two di
Authors
M. T. Meyer, E.M. Thurman, D. A. Goolsby
Herbicide metabolites in surface water and groundwater: Introduction and overview
Several future research topics for herbicide metabolites in surface and ground water are outlined in this chapter. They are herbicide usage, chemical analysis of metabolites, and fate and transport of metabolites in surface and ground water. These three ideas follow the themes in this book, which are the summary of a symposium of the American Chemical Society on herbicide metabolites in surface an
Authors
E.M. Thurman, M. T. Meyer
The deethylatrazine/atrazine ratio as an indicator of the onset of the spring flush of herbicides into surface water of the midwestern United States
[No abstract available]
Authors
E.M. Thurman, J. D. Fallon
Propagation and composition of the flood wave on the upper Mississippi River, 1993
During spring and summer 1993, record flooding inundated much of the upper Mississippi River Basin. The magnitude of the damages-in terms of property, disrupted business, and personal trauma was unmatched by any other flood disaster in United States history. Property damage alone is expected to exceed $10 billion. Damaged highways and submerged roads disrupted overland transportation throughout th
Authors
John A. Moody
The occurrence and transport of agricultural pesticides in the Tuttle Creek lake-stream system, Kansas and Nebraska
Median monthly atrazine concentrations detected in surface-water samples from the Big Blue River basin (1977-86) exceeded the U.S. Environmental Protection Agency health-advisory level (3.0 micrograms per liter) during May through September. Herbicide loads transported from the basin in 1986, expressed in tons and in percentage of amount applied, were alachlor (1.2 tons, 0.23 percent), atrazine (1
Authors
Hugh E. Bevans, Carla Hyde Fromm, Sharon A. Watkins
Surface-water-quality assessment of the lower Kansas River Basin, Kansas and Nebraska: Suspended-sediment conditions, May 1987 through April 1990, and trends, 1963 through April 1990
Median suspended-sediment concentrations ranged from 100 to 110 milligrams per liter for 3 stations on the Kansas River and from 4 to 110 milligrams per liter for 10 stations on tributary streams during May 1987 through April 1990. For tributary stream stations upstream from large reservoirs, concen- trations in the 90th percentile ranged from 240 to 3,200 milligrams per liter. The larger median a
Authors
Paul Robert Jordan
Surface-water-quality assessment of the lower Kansas River basin, Kansas and Nebraska– Analysis of available data through 1986
Available surface water-quality data were used to provide an initial assessment of current water-quality conditions for 1978-86, define long-term trends in constituent concentrations, and relate current water-quality conditions and trends to human and natural factors in the lower Kansas River basin, Kansas and Nebraska. This basin drains 15,300 square miles of predominantly agricultural land and i
Authors
J. K. Stamer