Allan Kolker (Former Employee)
Science and Products
Filter Total Items: 51
Arsenic and mercury in the soils of an industrial city in the Donets Basin, Ukraine
Soil and house dust collected in and around Hg mines and a processing facility in Horlivka, a mid-sized city in the Donets Basin of southeastern Ukraine, have elevated As and Hg levels. Surface soils collected at a former Hg-processing facility had up to 1300 mg kg−1 As and 8800 mg kg−1 Hg; 1M HCl extractions showed 74–93% of the total As, and 1–13% of the total Hg to be solubilized, suggesting di
Authors
Kathryn M. Conko, Edward R. Landa, Allan Kolker, Kostiantyn Kozlov, Herman J. Gibb, Jose Centeno, Boris S. Panov, Yuri B. Panov
Mercury and halogens in coal--Their role in determining mercury emissions from coal combustion
Mercury is a toxic pollutant. In its elemental form, gaseous mercury has a long residence time in the atmosphere, up to a year, allowing it to be transported long distances from emission sources. Mercury can be emitted from natural sources such as volcanoes, or from anthropogenic sources, such as coal-fired powerplants. In addition, all sources of mercury on the Earth's surface can re-emit it from
Authors
Allan Kolker, Jeffrey C. Quick, Connie L. Senior, Harvey E. Belkin
Minor element distribution in iron disulfides in coal: a geochemical review
Electron beam microanalysis of coal samples in U.S. Geological Survey (USGS) labs confirms that As is the most abundant minor constituent in Fe disulfides in coal and that Se, Ni, and other minor constituents are present less commonly and at lower concentrations than those for As. In nearly all cases, Hg occurs in Fe disulfides in coal at concentrations below detection by electron beam instruments
Authors
Allan Kolker
Geochemical database of feed coal and coal combustion products (CCPs) from five power plants in the United States
The principal mission of the U.S. Geological Survey (USGS) Energy Resources Program (ERP) is to (1) understand the processes critical to the formation, accumulation, occurrence, and alteration of geologically based energy resources; (2) conduct scientifically robust assessments of those resources; and (3) study the impacts of energy resource occurrence and (or) their production and use on both the
Authors
Ronald H. Affolter, Steve Groves, William J. Betterton, Benzel William, Kelly L. Conrad, Sharon M. Swanson, Leslie F. Ruppert, James G. Clough, Harvey E. Belkin, Allan Kolker, James C. Hower
Source apportionment of atmospheric trace gases and particulate matter--Comparison of log-ratio and traditional approaches
No abstract available.
Authors
Mark A. Engle, Bernhard Peucker-Ehrenbrink, Josep M. Martín-Fernández, David P. Krabbenhoft, Paul J. Lamothe, Michael H. Bothner, Ricardo A. Olea, Allan Kolker, Michael T. Tate
By
Ecosystems Mission Area, Water Resources Mission Area, Energy Resources Program, Environmental Health Program, Toxic Substances Hydrology, Geology, Energy & Minerals Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center, Woods Hole Coastal and Marine Science Center, Mercury Research Laboratory
Biomarkers of mercury exposure in two eastern Ukraine cities
This study evaluates biomarkers of mercury exposure among residents of Horlivka, a city in eastern Ukraine located in an area with geologic and industrial sources of environmental mercury, and residents of Artemivsk, a nearby comparison city outside the mercury-enriched area. Samples of urine, blood, hair, and nails were collected from study participants, and a questionnaire was administered to ob
Authors
H. Gibb, C. Haver, K. Kozlov, J.A. Centeno, V. Jurgenson, Allan Kolker, Kathryn M. Conko, Edward R. Landa, H. Xu
Quantifying greenhouse gas emissions from coal fires using airborne and ground-based methods
Coal fires occur in all coal-bearing regions of the world and number, conservatively, in the thousands. These fires emit a variety of compounds including greenhouse gases. However, the magnitude of the contribution of combustion gases from coal fires to the environment is highly uncertain, because adequate data and methods for assessing emissions are lacking. This study demonstrates the ability to
Authors
Mark A. Engle, Lawrence F. Radke, Edward L. Heffern, Jennifer M.K. O'Keefe, Charles Smeltzer, James C. Hower, Judith M. Hower, Anupma Prakash, Allan Kolker, Robert J. Eatwell, Arnout ter Schure, Gerald Queen, Kerry L. Aggen, Glenn B. Stracher, Kevin R. Henke, Ricardo A. Olea, Yomayara Román-Colón
Comparison of atmospheric mercury speciation and deposition at nine sites across central and eastern North America
This study presents >5 cumulative years of tropospheric mercury (Hg) speciation measurements, over the period of 2003–2009, for eight sites in the central and eastern United States and one site in coastal Puerto Rico. The purpose of this research was to identify local and regional processes that impact Hg speciation and deposition (wet + dry) across a large swath of North America. Sites sampled we
Authors
Mark A. Engle, Michael T. Tate, David P. Krabbenhoft, James J Schauer, Allan Kolker, James B. Shanley, Michael Bothner
Health effects of energy resources
Energy resources (coal, oil, and natural gas) are among the cornerstones of modern industrial society. The exploitation of these resources, however, is not without costs. Energy materials may contain harmful chemical substances that, if mobilized into air, water, or soil, can adversely impact human health and environmental quality. In order to address the issue of human exposure to toxic substance
Authors
William Orem, Calin Tatu, Nikola Pavlovic, Joseph Bunnell, Allan Kolker, Mark Engle, Ben Stout
Patterns of mercury dispersion from local and regional emission sources, rural Central Wisconsin, USA
Simultaneous real-time changes in mercury (Hg) speciation-reactive gaseous Hg (RGM), elemental Hg (Hg??), and fine particulate Hg (Hg-PM2.5), were determined from June to November 2007, in ambient air at three locations in rural Central Wisconsin. Known Hg emission sources within the airshed of the monitoring sites include: 1) a 1114 megawatt (MW) coal-fired electric utility generating station; 2)
Authors
A. Kolker, M.L. Olson, David P. Krabbenhoft, Michael T. Tate, Mark A. Engle
Emissions from coal fires and their impact on the environment
Self-ignited, naturally occurring coal fires and fires resulting from human activities persist for decades in underground coal mines, coal waste piles, and unmined coal beds. These uncontrolled coal fires occur in all coal-bearing parts of the world (Stracher, 2007) and pose multiple threats to the global environment because they emit greenhouse gases - carbon dioxide (CO2), and methane (CH4) - as
Authors
Allan Kolker, Mark Engle, Glenn Stracher, James Hower, Anupma Prakash, Lawrence Radke, Arnout ter Schure, Ed Heffern
Measuring CO2 emissions from coal fires in the U.S.
No abstract available.
Authors
Allan Kolker, Mark A. Engle, J.C. Hower, J.M.K. O'Keefe, L.F. Radke, E.L. Heffern, A. ter-Schure, G.B. Stracher, A. Prakash, Yomayra A. Roman-Colon, Ricardo A. Olea
Non-USGS Publications**
Huggins, F. E., Huffman, G. P., Kolker, Allan, Mroczkowski, S. J., Palmer, C. A., and Finkelman, R. B., 2002, Combined application of XAFS spectroscopy and sequential leaching for determination of arsenic speciation in coal: Energy and Fuels, v. 16, no. 5, p. 1167-1172.
Bunnell, J. E., Garcia, L. V., Furst, J. M., Lerch, Harry, Olea, R.A., Suitt, S.E., and Kolker, Allan, 2010, Navajo coal combustion and respiratory health near Shiprock, New Mexico: Journal of Environmental and Public Health, v. 2010, #260525, 14 p.
Engle, Mark A., Radke, Lawrence F., Heffern, Edward L., O’Keefe, Jennifer M.K., Hower, James C., Smeltzer, Charles D., Hower, Judith M, Olea, Ricardo A., Eatwell, Robert J., Blake, Donald R., Emsbo-Mattingly, Stephen D., Stout, Scott A., Queen, Gerald, Aggen, Kerry L., Kolker, Allan, Prakash, Anupma, Henke, Kevin R., Stracher, Glenn B., Schroeder, Paul A., Román-Colón, Yomayra, and ter Schure, Arnout, 2012, Gas emissions, minerals, and tars associated with three coal fires, Powder River Basin, USA: Science of the Total Environment, v. 420, p. 146-159.
Kolker, Allan, Engle, Mark A., Peuker-Ehrenbrink, Bernhard, Geboy, N. J., Krabbenhoft, D.P., Bothner, M.H., and Tate, M.T., Atmospheric mercury and fine particulate matter at Woods Hole, Cape Cod, MA: Implications for mercury and trace element sources in the northeastern U.S.: Atmospheric Environment, v. 79, p. 760-768.
Kolker, Allan, and Quick, Jeffrey C., 2015, Mercury and halogens in coal, in, Granite, E., Senior, C., and Pennline, H., eds., Mercury control for coal-derived gas steams, Wiley-VCH, p. 13-44.
Kolker, Allan, 2016, Mercury in U.S. Coal- Priorities for New USGS Studies: U.S. Geological Survey Open File Report, in press.
Deonarine, A., Kolker, A., Doughten, M., Bailoo, J.D., and Holland, J.T., Arsenic speciation in bituminous coal fly ash and transformations in response to redox conditions: Submitted to Environmental Science and Technology.
Deonarine, A., Kolker, A., Doughten, M., Bailoo, J.D., and Holland, J.T., Arsenic speciation in bituminous coal fly ash and transformations in response to redox conditions: Submitted to Environmental Science and Technology.
**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: 51
Arsenic and mercury in the soils of an industrial city in the Donets Basin, Ukraine
Soil and house dust collected in and around Hg mines and a processing facility in Horlivka, a mid-sized city in the Donets Basin of southeastern Ukraine, have elevated As and Hg levels. Surface soils collected at a former Hg-processing facility had up to 1300 mg kg−1 As and 8800 mg kg−1 Hg; 1M HCl extractions showed 74–93% of the total As, and 1–13% of the total Hg to be solubilized, suggesting di
Authors
Kathryn M. Conko, Edward R. Landa, Allan Kolker, Kostiantyn Kozlov, Herman J. Gibb, Jose Centeno, Boris S. Panov, Yuri B. Panov
Mercury and halogens in coal--Their role in determining mercury emissions from coal combustion
Mercury is a toxic pollutant. In its elemental form, gaseous mercury has a long residence time in the atmosphere, up to a year, allowing it to be transported long distances from emission sources. Mercury can be emitted from natural sources such as volcanoes, or from anthropogenic sources, such as coal-fired powerplants. In addition, all sources of mercury on the Earth's surface can re-emit it from
Authors
Allan Kolker, Jeffrey C. Quick, Connie L. Senior, Harvey E. Belkin
Minor element distribution in iron disulfides in coal: a geochemical review
Electron beam microanalysis of coal samples in U.S. Geological Survey (USGS) labs confirms that As is the most abundant minor constituent in Fe disulfides in coal and that Se, Ni, and other minor constituents are present less commonly and at lower concentrations than those for As. In nearly all cases, Hg occurs in Fe disulfides in coal at concentrations below detection by electron beam instruments
Authors
Allan Kolker
Geochemical database of feed coal and coal combustion products (CCPs) from five power plants in the United States
The principal mission of the U.S. Geological Survey (USGS) Energy Resources Program (ERP) is to (1) understand the processes critical to the formation, accumulation, occurrence, and alteration of geologically based energy resources; (2) conduct scientifically robust assessments of those resources; and (3) study the impacts of energy resource occurrence and (or) their production and use on both the
Authors
Ronald H. Affolter, Steve Groves, William J. Betterton, Benzel William, Kelly L. Conrad, Sharon M. Swanson, Leslie F. Ruppert, James G. Clough, Harvey E. Belkin, Allan Kolker, James C. Hower
Source apportionment of atmospheric trace gases and particulate matter--Comparison of log-ratio and traditional approaches
No abstract available.
Authors
Mark A. Engle, Bernhard Peucker-Ehrenbrink, Josep M. Martín-Fernández, David P. Krabbenhoft, Paul J. Lamothe, Michael H. Bothner, Ricardo A. Olea, Allan Kolker, Michael T. Tate
By
Ecosystems Mission Area, Water Resources Mission Area, Energy Resources Program, Environmental Health Program, Toxic Substances Hydrology, Geology, Energy & Minerals Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center, Woods Hole Coastal and Marine Science Center, Mercury Research Laboratory
Biomarkers of mercury exposure in two eastern Ukraine cities
This study evaluates biomarkers of mercury exposure among residents of Horlivka, a city in eastern Ukraine located in an area with geologic and industrial sources of environmental mercury, and residents of Artemivsk, a nearby comparison city outside the mercury-enriched area. Samples of urine, blood, hair, and nails were collected from study participants, and a questionnaire was administered to ob
Authors
H. Gibb, C. Haver, K. Kozlov, J.A. Centeno, V. Jurgenson, Allan Kolker, Kathryn M. Conko, Edward R. Landa, H. Xu
Quantifying greenhouse gas emissions from coal fires using airborne and ground-based methods
Coal fires occur in all coal-bearing regions of the world and number, conservatively, in the thousands. These fires emit a variety of compounds including greenhouse gases. However, the magnitude of the contribution of combustion gases from coal fires to the environment is highly uncertain, because adequate data and methods for assessing emissions are lacking. This study demonstrates the ability to
Authors
Mark A. Engle, Lawrence F. Radke, Edward L. Heffern, Jennifer M.K. O'Keefe, Charles Smeltzer, James C. Hower, Judith M. Hower, Anupma Prakash, Allan Kolker, Robert J. Eatwell, Arnout ter Schure, Gerald Queen, Kerry L. Aggen, Glenn B. Stracher, Kevin R. Henke, Ricardo A. Olea, Yomayara Román-Colón
Comparison of atmospheric mercury speciation and deposition at nine sites across central and eastern North America
This study presents >5 cumulative years of tropospheric mercury (Hg) speciation measurements, over the period of 2003–2009, for eight sites in the central and eastern United States and one site in coastal Puerto Rico. The purpose of this research was to identify local and regional processes that impact Hg speciation and deposition (wet + dry) across a large swath of North America. Sites sampled we
Authors
Mark A. Engle, Michael T. Tate, David P. Krabbenhoft, James J Schauer, Allan Kolker, James B. Shanley, Michael Bothner
Health effects of energy resources
Energy resources (coal, oil, and natural gas) are among the cornerstones of modern industrial society. The exploitation of these resources, however, is not without costs. Energy materials may contain harmful chemical substances that, if mobilized into air, water, or soil, can adversely impact human health and environmental quality. In order to address the issue of human exposure to toxic substance
Authors
William Orem, Calin Tatu, Nikola Pavlovic, Joseph Bunnell, Allan Kolker, Mark Engle, Ben Stout
Patterns of mercury dispersion from local and regional emission sources, rural Central Wisconsin, USA
Simultaneous real-time changes in mercury (Hg) speciation-reactive gaseous Hg (RGM), elemental Hg (Hg??), and fine particulate Hg (Hg-PM2.5), were determined from June to November 2007, in ambient air at three locations in rural Central Wisconsin. Known Hg emission sources within the airshed of the monitoring sites include: 1) a 1114 megawatt (MW) coal-fired electric utility generating station; 2)
Authors
A. Kolker, M.L. Olson, David P. Krabbenhoft, Michael T. Tate, Mark A. Engle
Emissions from coal fires and their impact on the environment
Self-ignited, naturally occurring coal fires and fires resulting from human activities persist for decades in underground coal mines, coal waste piles, and unmined coal beds. These uncontrolled coal fires occur in all coal-bearing parts of the world (Stracher, 2007) and pose multiple threats to the global environment because they emit greenhouse gases - carbon dioxide (CO2), and methane (CH4) - as
Authors
Allan Kolker, Mark Engle, Glenn Stracher, James Hower, Anupma Prakash, Lawrence Radke, Arnout ter Schure, Ed Heffern
Measuring CO2 emissions from coal fires in the U.S.
No abstract available.
Authors
Allan Kolker, Mark A. Engle, J.C. Hower, J.M.K. O'Keefe, L.F. Radke, E.L. Heffern, A. ter-Schure, G.B. Stracher, A. Prakash, Yomayra A. Roman-Colon, Ricardo A. Olea
Non-USGS Publications**
Huggins, F. E., Huffman, G. P., Kolker, Allan, Mroczkowski, S. J., Palmer, C. A., and Finkelman, R. B., 2002, Combined application of XAFS spectroscopy and sequential leaching for determination of arsenic speciation in coal: Energy and Fuels, v. 16, no. 5, p. 1167-1172.
Bunnell, J. E., Garcia, L. V., Furst, J. M., Lerch, Harry, Olea, R.A., Suitt, S.E., and Kolker, Allan, 2010, Navajo coal combustion and respiratory health near Shiprock, New Mexico: Journal of Environmental and Public Health, v. 2010, #260525, 14 p.
Engle, Mark A., Radke, Lawrence F., Heffern, Edward L., O’Keefe, Jennifer M.K., Hower, James C., Smeltzer, Charles D., Hower, Judith M, Olea, Ricardo A., Eatwell, Robert J., Blake, Donald R., Emsbo-Mattingly, Stephen D., Stout, Scott A., Queen, Gerald, Aggen, Kerry L., Kolker, Allan, Prakash, Anupma, Henke, Kevin R., Stracher, Glenn B., Schroeder, Paul A., Román-Colón, Yomayra, and ter Schure, Arnout, 2012, Gas emissions, minerals, and tars associated with three coal fires, Powder River Basin, USA: Science of the Total Environment, v. 420, p. 146-159.
Kolker, Allan, Engle, Mark A., Peuker-Ehrenbrink, Bernhard, Geboy, N. J., Krabbenhoft, D.P., Bothner, M.H., and Tate, M.T., Atmospheric mercury and fine particulate matter at Woods Hole, Cape Cod, MA: Implications for mercury and trace element sources in the northeastern U.S.: Atmospheric Environment, v. 79, p. 760-768.
Kolker, Allan, and Quick, Jeffrey C., 2015, Mercury and halogens in coal, in, Granite, E., Senior, C., and Pennline, H., eds., Mercury control for coal-derived gas steams, Wiley-VCH, p. 13-44.
Kolker, Allan, 2016, Mercury in U.S. Coal- Priorities for New USGS Studies: U.S. Geological Survey Open File Report, in press.
Deonarine, A., Kolker, A., Doughten, M., Bailoo, J.D., and Holland, J.T., Arsenic speciation in bituminous coal fly ash and transformations in response to redox conditions: Submitted to Environmental Science and Technology.
Deonarine, A., Kolker, A., Doughten, M., Bailoo, J.D., and Holland, J.T., Arsenic speciation in bituminous coal fly ash and transformations in response to redox conditions: Submitted to Environmental Science and Technology.
**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.