Parents and Degradation Products of Analysis: OGRL LCEA
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By Organic Geochemistry Research Laboratory (OGRL)
August 15, 2016
Organic Geochemistry Research Lab
(OGRL)
(OGRL)
Triazines and phenylureas are commonly used herbicides for controlling weeds in row crops. These herbicides and their degradation products have been found in samples collected from surface water, groundwater, and precipitation throughout the United States. Atrazine until recently was the most widely applied herbicide in the U.S. and is still a widely applied preplanting corn herbicide.
Below are multimedia items associated with this project.
Below are publications associated with this project.
Comparison of fate and transport of isoxaflutole to atrazine and metolachlor in 10 Iowa rivers Comparison of fate and transport of isoxaflutole to atrazine and metolachlor in 10 Iowa rivers
Isoxaflutole (IXF), a newer low application rate herbicide, was introduced for weed control in corn (Zea mays) to use as an alternative to widely applied herbicides such as atrazine. The transport of IXF in streamwater has not been well-studied. The fate and transport of IXF and two of its degradation products was studied in 10 Iowa rivers during 2004. IXF rapidly degrades to the...
Authors
Michael T. Meyer, Elisabeth A. Scribner, Stephen J. Kalkhoff
Summary of significant results from studies of triazine herbicides and their degradation products in surface water, ground water, and precipitation in the midwestern United States during the 1990s Summary of significant results from studies of triazine herbicides and their degradation products in surface water, ground water, and precipitation in the midwestern United States during the 1990s
Nonpoint-source contamination of water resources from triazine herbicides has been a major water-quality issue during the 1990s in the United States. To address this issue, studies of surface water, ground water, and precipitation have been carried out by the U.S. Geological Survey in the Midwestern United States. Reconnaissance studies of 147 streams were conducted to determine the...
Authors
Elisabeth A. Scribner, E.M. Thurman, Donald A. Goolsby, Michael T. Meyer, William A. Battaglin, Dana W. Kolpin
Differentiating nonpoint sources of deisopropylatrazine in surface water using discrimination diagrams Differentiating nonpoint sources of deisopropylatrazine in surface water using discrimination diagrams
Pesticide degradates account for a significant portion of the pesticide load in surface water. Because pesticides with similar structures may degrade to the same degradate, it is important to distinguish between different sources of parent compounds that have different regulatory and environmental implications. A discrimination diagram, which is a sample plot of chemical data that...
Authors
M. T. Meyer, E.M. Thurman, D. A. Goolsby
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
Triazines and phenylureas are commonly used herbicides for controlling weeds in row crops. These herbicides and their degradation products have been found in samples collected from surface water, groundwater, and precipitation throughout the United States. Atrazine until recently was the most widely applied herbicide in the U.S. and is still a widely applied preplanting corn herbicide.
Below are multimedia items associated with this project.
Below are publications associated with this project.
Comparison of fate and transport of isoxaflutole to atrazine and metolachlor in 10 Iowa rivers Comparison of fate and transport of isoxaflutole to atrazine and metolachlor in 10 Iowa rivers
Isoxaflutole (IXF), a newer low application rate herbicide, was introduced for weed control in corn (Zea mays) to use as an alternative to widely applied herbicides such as atrazine. The transport of IXF in streamwater has not been well-studied. The fate and transport of IXF and two of its degradation products was studied in 10 Iowa rivers during 2004. IXF rapidly degrades to the...
Authors
Michael T. Meyer, Elisabeth A. Scribner, Stephen J. Kalkhoff
Summary of significant results from studies of triazine herbicides and their degradation products in surface water, ground water, and precipitation in the midwestern United States during the 1990s Summary of significant results from studies of triazine herbicides and their degradation products in surface water, ground water, and precipitation in the midwestern United States during the 1990s
Nonpoint-source contamination of water resources from triazine herbicides has been a major water-quality issue during the 1990s in the United States. To address this issue, studies of surface water, ground water, and precipitation have been carried out by the U.S. Geological Survey in the Midwestern United States. Reconnaissance studies of 147 streams were conducted to determine the...
Authors
Elisabeth A. Scribner, E.M. Thurman, Donald A. Goolsby, Michael T. Meyer, William A. Battaglin, Dana W. Kolpin
Differentiating nonpoint sources of deisopropylatrazine in surface water using discrimination diagrams Differentiating nonpoint sources of deisopropylatrazine in surface water using discrimination diagrams
Pesticide degradates account for a significant portion of the pesticide load in surface water. Because pesticides with similar structures may degrade to the same degradate, it is important to distinguish between different sources of parent compounds that have different regulatory and environmental implications. A discrimination diagram, which is a sample plot of chemical data that...
Authors
M. T. Meyer, E.M. Thurman, D. A. Goolsby
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