James L Gray, PhD
James Gray is a Research Chemist for the USGS Water Resources Mission Area.
Science and Products
Filter Total Items: 21
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Steroid hormone runoff from agricultural test plots applied with municipal biosolids Steroid hormone runoff from agricultural test plots applied with municipal biosolids
The potential presence of steroid hormones in runoff from sites where biosolids have been used as agricultural fertilizers is an environmental concern. A study was conducted to assess the potential for runoff of seventeen different hormones and two sterols, including androgens, estrogens, and progestogens from agricultural test plots. The field containing the test plots had been applied...
Authors
Yun-Ya Yang, James L. Gray, Edward T. Furlong, Jessica G. Davis, Rhiannon C. ReVollo, Thomas Borch
Pharmaceuticals, hormones, anthropogenic waste indicators, and total estrogenicity in liquid and solid samples from municipal sludge stabilization and dewatering Pharmaceuticals, hormones, anthropogenic waste indicators, and total estrogenicity in liquid and solid samples from municipal sludge stabilization and dewatering
The ubiquitous presence of pharmaceuticals and other emerging contaminants, or trace organic compounds, in surface water has resulted in research and monitoring efforts to identify contaminant sources to surface waters and to better understand loadings from these sources. Wastewater treatment plant discharges have been identified as an important point source of trace organic compounds to...
Authors
Edward T. Furlong, James L. Gray, David M. Quanrud, Sondra S. Teske, Stephen L. Werner, Kathleen Esposito, Jeremy Marine, Wendell P. Ela, Steven D. Zaugg, Patrick J. Phillips, Beverley Stinson
Lagrangian sampling of wastewater treatment plant effluent in Boulder Creek, Colorado, and Fourmile Creek, Iowa, during the summer of 2003 and spring of 2005— Hydrological and water-quality data Lagrangian sampling of wastewater treatment plant effluent in Boulder Creek, Colorado, and Fourmile Creek, Iowa, during the summer of 2003 and spring of 2005— Hydrological and water-quality data
This report presents methods and data for a Lagrangian sampling investigation into chemical loading and in-stream attenuation of inorganic and organic contaminants in two wastewater treatment-plant effluent-dominated streams: Boulder Creek, Colorado, and Fourmile Creek, Iowa. Water-quality sampling was timed to coincide with low-flow conditions when dilution of the wastewater treatment...
Authors
Larry B. Barber, Steffanie H. Keefe, Dana W. Kolpin, Douglas J. Schnoebelen, Jennifer L. Flynn, Gregory K. Brown, Edward T. Furlong, Susan T. Glassmeyer, James L. Gray, Michael T. Meyer, Mark W. Sandstrom, Howard E. Taylor, Steven D. Zaugg
Determination of the anionic surfactant di(ethylhexyl) sodium sulfosuccinate in water samples collected from Gulf of Mexico coastal waters before and after landfall of oil from the Deepwater Horizon oil spill, May to October, 2010 Determination of the anionic surfactant di(ethylhexyl) sodium sulfosuccinate in water samples collected from Gulf of Mexico coastal waters before and after landfall of oil from the Deepwater Horizon oil spill, May to October, 2010
On April 22, 2010, the explosion on and subsequent sinking of the Deepwater Horizon oil drilling platform resulted in the release of crude oil into the Gulf of Mexico. At least 4.4 million barrels had been released into the Gulf of Mexico through July 15, 2010, 10 to 29 percent of which was chemically dispersed, primarily using two dispersant formulations. Initially, the dispersant...
Authors
James L. Gray, Leslie K. Kanagy, Edward T. Furlong, Jeff W. McCoy, Chris J. Kanagy
Endocrine active chemicals, pharmaceuticals, and other chemicals of concern in surface water, wastewater-treatment plant effluent, and bed sediment, and biological characteristics in selected streams, Minnesota: Design, methods, and data, 2009 Endocrine active chemicals, pharmaceuticals, and other chemicals of concern in surface water, wastewater-treatment plant effluent, and bed sediment, and biological characteristics in selected streams, Minnesota: Design, methods, and data, 2009
This report presents the study design, environmental data, and quality-assurance data for an integrated chemical and biological study of selected streams or lakes that receive wastewater-treatment plant effluent in Minnesota. This study was a cooperative effort of the U.S. Geological Survey, the Minnesota Pollution Control Agency, St. Cloud State University, the University of St. Thomas...
Authors
Kathy Lee, Susan K. Langer, Larry B. Barber, Jeff H. Writer, Mark L. Ferrey, Heiko L. Schoenfuss, Edward T. Furlong, William T. Foreman, James L. Gray, Rhiannon C. ReVello, Dalma Martinovic, Olivia R. Woodruff, Steffanie H. Keefe, Greg K. Brown, Howard E. Taylor, Imma Ferrer, E. Michael Thurman
Demasculinization of male fish by wastewater treatment plant effluent Demasculinization of male fish by wastewater treatment plant effluent
Adult male fathead minnows (Pimephales promelas) were exposed to effluent from the City of Boulder, Colorado wastewater treatment plant (WWTP) under controlled conditions in the field to determine if the effluent induced reproductive disruption in fish. Gonadal intersex and other evidence of reproductive disruption were previously identified in white suckers (Catostomus commersoni) in...
Authors
A.M. Vajda, Larry B. Barber, James L. Gray, E.M. Lopez, A.M. Bolden, H.L. Schoenfuss, D.O. Norris
Non-USGS Publications**
Kolodziej, E. P., Gray, J. L., & Sedlak, D. L. (2003). Quantification Of Steroid Hormones With Pheromonal Properties In Municipal Wastewater Effluent. Environmental Toxicology and Chemistry, 22(11), 2622. doi:10.1897/03-42
Sedlak, D. L., Pinkston, K. E., Gray, J. L., & Kolodziej, E. P. (2003). Approaches for Quantifying the Attenuation of Wastewater-Derived Contaminants in the Aquatic Environment. CHIMIA International Journal for Chemistry, 57(9), 567-569. doi:10.2533/000942903777679055
Sedlak, D. L., Gray, J. L., & Pinkston, K. E. (2000). Peer Reviewed: Understanding Microcontaminants in Recycled Water. Environmental Science & Technology, 34(23). doi:10.1021/es003513e
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 21
No Result Found
Filter Total Items: 50
Steroid hormone runoff from agricultural test plots applied with municipal biosolids Steroid hormone runoff from agricultural test plots applied with municipal biosolids
The potential presence of steroid hormones in runoff from sites where biosolids have been used as agricultural fertilizers is an environmental concern. A study was conducted to assess the potential for runoff of seventeen different hormones and two sterols, including androgens, estrogens, and progestogens from agricultural test plots. The field containing the test plots had been applied...
Authors
Yun-Ya Yang, James L. Gray, Edward T. Furlong, Jessica G. Davis, Rhiannon C. ReVollo, Thomas Borch
Pharmaceuticals, hormones, anthropogenic waste indicators, and total estrogenicity in liquid and solid samples from municipal sludge stabilization and dewatering Pharmaceuticals, hormones, anthropogenic waste indicators, and total estrogenicity in liquid and solid samples from municipal sludge stabilization and dewatering
The ubiquitous presence of pharmaceuticals and other emerging contaminants, or trace organic compounds, in surface water has resulted in research and monitoring efforts to identify contaminant sources to surface waters and to better understand loadings from these sources. Wastewater treatment plant discharges have been identified as an important point source of trace organic compounds to...
Authors
Edward T. Furlong, James L. Gray, David M. Quanrud, Sondra S. Teske, Stephen L. Werner, Kathleen Esposito, Jeremy Marine, Wendell P. Ela, Steven D. Zaugg, Patrick J. Phillips, Beverley Stinson
Lagrangian sampling of wastewater treatment plant effluent in Boulder Creek, Colorado, and Fourmile Creek, Iowa, during the summer of 2003 and spring of 2005— Hydrological and water-quality data Lagrangian sampling of wastewater treatment plant effluent in Boulder Creek, Colorado, and Fourmile Creek, Iowa, during the summer of 2003 and spring of 2005— Hydrological and water-quality data
This report presents methods and data for a Lagrangian sampling investigation into chemical loading and in-stream attenuation of inorganic and organic contaminants in two wastewater treatment-plant effluent-dominated streams: Boulder Creek, Colorado, and Fourmile Creek, Iowa. Water-quality sampling was timed to coincide with low-flow conditions when dilution of the wastewater treatment...
Authors
Larry B. Barber, Steffanie H. Keefe, Dana W. Kolpin, Douglas J. Schnoebelen, Jennifer L. Flynn, Gregory K. Brown, Edward T. Furlong, Susan T. Glassmeyer, James L. Gray, Michael T. Meyer, Mark W. Sandstrom, Howard E. Taylor, Steven D. Zaugg
Determination of the anionic surfactant di(ethylhexyl) sodium sulfosuccinate in water samples collected from Gulf of Mexico coastal waters before and after landfall of oil from the Deepwater Horizon oil spill, May to October, 2010 Determination of the anionic surfactant di(ethylhexyl) sodium sulfosuccinate in water samples collected from Gulf of Mexico coastal waters before and after landfall of oil from the Deepwater Horizon oil spill, May to October, 2010
On April 22, 2010, the explosion on and subsequent sinking of the Deepwater Horizon oil drilling platform resulted in the release of crude oil into the Gulf of Mexico. At least 4.4 million barrels had been released into the Gulf of Mexico through July 15, 2010, 10 to 29 percent of which was chemically dispersed, primarily using two dispersant formulations. Initially, the dispersant...
Authors
James L. Gray, Leslie K. Kanagy, Edward T. Furlong, Jeff W. McCoy, Chris J. Kanagy
Endocrine active chemicals, pharmaceuticals, and other chemicals of concern in surface water, wastewater-treatment plant effluent, and bed sediment, and biological characteristics in selected streams, Minnesota: Design, methods, and data, 2009 Endocrine active chemicals, pharmaceuticals, and other chemicals of concern in surface water, wastewater-treatment plant effluent, and bed sediment, and biological characteristics in selected streams, Minnesota: Design, methods, and data, 2009
This report presents the study design, environmental data, and quality-assurance data for an integrated chemical and biological study of selected streams or lakes that receive wastewater-treatment plant effluent in Minnesota. This study was a cooperative effort of the U.S. Geological Survey, the Minnesota Pollution Control Agency, St. Cloud State University, the University of St. Thomas...
Authors
Kathy Lee, Susan K. Langer, Larry B. Barber, Jeff H. Writer, Mark L. Ferrey, Heiko L. Schoenfuss, Edward T. Furlong, William T. Foreman, James L. Gray, Rhiannon C. ReVello, Dalma Martinovic, Olivia R. Woodruff, Steffanie H. Keefe, Greg K. Brown, Howard E. Taylor, Imma Ferrer, E. Michael Thurman
Demasculinization of male fish by wastewater treatment plant effluent Demasculinization of male fish by wastewater treatment plant effluent
Adult male fathead minnows (Pimephales promelas) were exposed to effluent from the City of Boulder, Colorado wastewater treatment plant (WWTP) under controlled conditions in the field to determine if the effluent induced reproductive disruption in fish. Gonadal intersex and other evidence of reproductive disruption were previously identified in white suckers (Catostomus commersoni) in...
Authors
A.M. Vajda, Larry B. Barber, James L. Gray, E.M. Lopez, A.M. Bolden, H.L. Schoenfuss, D.O. Norris
Non-USGS Publications**
Kolodziej, E. P., Gray, J. L., & Sedlak, D. L. (2003). Quantification Of Steroid Hormones With Pheromonal Properties In Municipal Wastewater Effluent. Environmental Toxicology and Chemistry, 22(11), 2622. doi:10.1897/03-42
Sedlak, D. L., Pinkston, K. E., Gray, J. L., & Kolodziej, E. P. (2003). Approaches for Quantifying the Attenuation of Wastewater-Derived Contaminants in the Aquatic Environment. CHIMIA International Journal for Chemistry, 57(9), 567-569. doi:10.2533/000942903777679055
Sedlak, D. L., Gray, J. L., & Pinkston, K. E. (2000). Peer Reviewed: Understanding Microcontaminants in Recycled Water. Environmental Science & Technology, 34(23). doi:10.1021/es003513e
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.