Kathy Echols, PhD (Former Employee)
Science and Products
Filter Total Items: 42
Biomonitoring of Environmental Status and Trends (BEST) Program: Environmental contaminants, health indicators, and reproductive biomarkers in fish from the Mobile, Apalachicola-Chattahoochee-Flint, Savannah, and Pee Dee River Basins Biomonitoring of Environmental Status and Trends (BEST) Program: Environmental contaminants, health indicators, and reproductive biomarkers in fish from the Mobile, Apalachicola-Chattahoochee-Flint, Savannah, and Pee Dee River Basins
Largemouth bass (Micropterus salmoides) and common carp (Cyprinus carpio) were collected from 13 sites in 4 river basins in the southeastern United States to document spatial trends in accumulative contaminants, health indicators, and reproductive biomarkers. Organochlorine residues, 2,3,7,8- tetrachlorodibenzo-p-dioxin-like activity (TCDD-EQ), and elemental contaminants were measured in...
Authors
Jo Ellen Hinck, Vicki Blazer, Nancy D. Denslow, Kathy R. Echols, Robert W. Gale, Tom W. May, Rachael Claunch, Carla Wieser, Patrick J. Anderson, James J. Coyle, Timothy S. Gross, Donald E. Tillitt
Survey of chemical contaminants in the Hanalei River, Kaua'i, Hawai'i, 2001 Survey of chemical contaminants in the Hanalei River, Kaua'i, Hawai'i, 2001
The Hanalei River on the island of Kaua'i in Hawai'i was designated an American Heritage River in 1998, providing special attention to natural resource protection, economic revitalization, and historic and cultural preservation. Agricultural, urban, and tourism-related activities are potential sources of contamination within the Hanalei River watershed. The objective of this study was to...
Authors
Carl E. Orazio, Thomas W. May, Robert W. Gale, John C. Meadows, William G. Brumbaugh, Kathy R. Echols, William W.M. Steiner, Carl J. Berg
Chemical contaminants, health indicators, and reproductive biomarker responses in fish from the Colorado River and its tributaries Chemical contaminants, health indicators, and reproductive biomarker responses in fish from the Colorado River and its tributaries
Common carp (Cyprinus carpio), black bass (Micropterus spp.), and channel catfish (Ictalurus punctatus) were collected from 14 sites in the Colorado River Basin (CRB) to document spatial trends in accumulative contaminants, health indicators, and reproductive biomarkers. Organochlorine residues, 2,3,7,8-tetrachlorodibenzo-p-dioxin-like activity (TCDD-EQ), and elemental contaminants were...
Authors
J.E. Hinck, V. S. Blazer, N. D. Denslow, K. R. Echols, T. S. Gross, T.W. May, P.J. Anderson, J.J. Coyle, D. E. Tillitt
Basic alumina flash chromatographic separation of bulk ortho-PCBs from on-ortho-PCBs, PBDEs, PCDFs, PCDDs, PCDTs, OCPs, and PCTs Basic alumina flash chromatographic separation of bulk ortho-PCBs from on-ortho-PCBs, PBDEs, PCDFs, PCDDs, PCDTs, OCPs, and PCTs
Comprising nearly 100 congeners in environmental samples, PCBs are often still prevalent in concentrations exceeding 1 μg/g. To effectively measure PCBs, they are isolated as a group from other persistent organic pollutants using silica gel, Florisil, or alumina column chromatography for analysis by GC/MS or dual capillary column GC/ECD. When organochlorine pesticides (OCPs) and...
Authors
Paul H. Peterman, Carl E. Orazio, Kathy R. Echols
Biomonitoring of Environmental Status and Trends (BEST) Program: Environmental contaminants, health indicators, and reproductive biomarkers in fish from the Colorado River basin Biomonitoring of Environmental Status and Trends (BEST) Program: Environmental contaminants, health indicators, and reproductive biomarkers in fish from the Colorado River basin
Seven fish species were collected from 14 sites on rivers in the Colorado River Basin (CDRB) from August to October 2003. Spatial trends in the concentrations of accumulative contaminants were documented and contaminant effects on the fish were assessed. Sites were located on the mainstem of the Colorado River and on the Yampa, Green, Gunnison, San Juan, and Gila Rivers. Common carp...
Authors
Jo Ellen Hinck, Vicki Blazer, Nancy D. Denslow, Timothy S. Gross, Kathy R. Echols, Anne P. Davis, Tom W. May, Carl E. Orazio, James J. Coyle, Donald E. Tillitt
Environmental contaminants in fish and their associated risk to piscivorous wildlife in the Yukon River Basin, Alaska Environmental contaminants in fish and their associated risk to piscivorous wildlife in the Yukon River Basin, Alaska
Organochlorine chemical residues and elemental contaminants were measured in northern pike (Esox lucius), longnose sucker (Catostomus catostomus), and burbot (Lota lota) from 10 sites in the Yukon River Basin (YRB) during 2002. Contaminant concentrations were compared to historical YRB data and to toxicity thresholds for fish and piscivorous wildlife from the scientific literature. A...
Authors
J.E. Hinck, C. J. Schmitt, K. R. Echols, T.W. May, C.E. Orazio, D. E. Tillitt
Science and Products
Filter Total Items: 42
Biomonitoring of Environmental Status and Trends (BEST) Program: Environmental contaminants, health indicators, and reproductive biomarkers in fish from the Mobile, Apalachicola-Chattahoochee-Flint, Savannah, and Pee Dee River Basins Biomonitoring of Environmental Status and Trends (BEST) Program: Environmental contaminants, health indicators, and reproductive biomarkers in fish from the Mobile, Apalachicola-Chattahoochee-Flint, Savannah, and Pee Dee River Basins
Largemouth bass (Micropterus salmoides) and common carp (Cyprinus carpio) were collected from 13 sites in 4 river basins in the southeastern United States to document spatial trends in accumulative contaminants, health indicators, and reproductive biomarkers. Organochlorine residues, 2,3,7,8- tetrachlorodibenzo-p-dioxin-like activity (TCDD-EQ), and elemental contaminants were measured in...
Authors
Jo Ellen Hinck, Vicki Blazer, Nancy D. Denslow, Kathy R. Echols, Robert W. Gale, Tom W. May, Rachael Claunch, Carla Wieser, Patrick J. Anderson, James J. Coyle, Timothy S. Gross, Donald E. Tillitt
Survey of chemical contaminants in the Hanalei River, Kaua'i, Hawai'i, 2001 Survey of chemical contaminants in the Hanalei River, Kaua'i, Hawai'i, 2001
The Hanalei River on the island of Kaua'i in Hawai'i was designated an American Heritage River in 1998, providing special attention to natural resource protection, economic revitalization, and historic and cultural preservation. Agricultural, urban, and tourism-related activities are potential sources of contamination within the Hanalei River watershed. The objective of this study was to...
Authors
Carl E. Orazio, Thomas W. May, Robert W. Gale, John C. Meadows, William G. Brumbaugh, Kathy R. Echols, William W.M. Steiner, Carl J. Berg
Chemical contaminants, health indicators, and reproductive biomarker responses in fish from the Colorado River and its tributaries Chemical contaminants, health indicators, and reproductive biomarker responses in fish from the Colorado River and its tributaries
Common carp (Cyprinus carpio), black bass (Micropterus spp.), and channel catfish (Ictalurus punctatus) were collected from 14 sites in the Colorado River Basin (CRB) to document spatial trends in accumulative contaminants, health indicators, and reproductive biomarkers. Organochlorine residues, 2,3,7,8-tetrachlorodibenzo-p-dioxin-like activity (TCDD-EQ), and elemental contaminants were...
Authors
J.E. Hinck, V. S. Blazer, N. D. Denslow, K. R. Echols, T. S. Gross, T.W. May, P.J. Anderson, J.J. Coyle, D. E. Tillitt
Basic alumina flash chromatographic separation of bulk ortho-PCBs from on-ortho-PCBs, PBDEs, PCDFs, PCDDs, PCDTs, OCPs, and PCTs Basic alumina flash chromatographic separation of bulk ortho-PCBs from on-ortho-PCBs, PBDEs, PCDFs, PCDDs, PCDTs, OCPs, and PCTs
Comprising nearly 100 congeners in environmental samples, PCBs are often still prevalent in concentrations exceeding 1 μg/g. To effectively measure PCBs, they are isolated as a group from other persistent organic pollutants using silica gel, Florisil, or alumina column chromatography for analysis by GC/MS or dual capillary column GC/ECD. When organochlorine pesticides (OCPs) and...
Authors
Paul H. Peterman, Carl E. Orazio, Kathy R. Echols
Biomonitoring of Environmental Status and Trends (BEST) Program: Environmental contaminants, health indicators, and reproductive biomarkers in fish from the Colorado River basin Biomonitoring of Environmental Status and Trends (BEST) Program: Environmental contaminants, health indicators, and reproductive biomarkers in fish from the Colorado River basin
Seven fish species were collected from 14 sites on rivers in the Colorado River Basin (CDRB) from August to October 2003. Spatial trends in the concentrations of accumulative contaminants were documented and contaminant effects on the fish were assessed. Sites were located on the mainstem of the Colorado River and on the Yampa, Green, Gunnison, San Juan, and Gila Rivers. Common carp...
Authors
Jo Ellen Hinck, Vicki Blazer, Nancy D. Denslow, Timothy S. Gross, Kathy R. Echols, Anne P. Davis, Tom W. May, Carl E. Orazio, James J. Coyle, Donald E. Tillitt
Environmental contaminants in fish and their associated risk to piscivorous wildlife in the Yukon River Basin, Alaska Environmental contaminants in fish and their associated risk to piscivorous wildlife in the Yukon River Basin, Alaska
Organochlorine chemical residues and elemental contaminants were measured in northern pike (Esox lucius), longnose sucker (Catostomus catostomus), and burbot (Lota lota) from 10 sites in the Yukon River Basin (YRB) during 2002. Contaminant concentrations were compared to historical YRB data and to toxicity thresholds for fish and piscivorous wildlife from the scientific literature. A...
Authors
J.E. Hinck, C. J. Schmitt, K. R. Echols, T.W. May, C.E. Orazio, D. E. Tillitt