Allan Kolker (Former Employee)
Science and Products
Filter Total Items: 51
Mercury and trace element contents of Donbas coals and associated mine water in the vicinity of Donetsk, Ukraine
Mercury-rich coals in the Donets Basin (Donbas region) of Ukraine were sampled in active underground mines to assess the levels of potentially harmful elements and the potential for dispersion of metals through use of this coal. For 29 samples representing c11 to m3 Carboniferous coals, mercury contents range from 0.02 to 3.5 ppm (whole-coal dry basis). Mercury is well correlated with pyritic sulf
Authors
A. Kolker, B.S. Panov, Y.B. Panov, E. R. Landa, K.M. Conko, V.A. Korchemagin, T. Shendrik, J.D. McCord
Summary of mercury and trace element results in precipitation from the Culpeper, Virginia, Mercury Deposition Network Site (VA-08), 2002-2006
The VA-08 Mercury Deposition Network (MDN) site, southwest of Culpeper, Virginia, was established in autumn of 2002. This site, along with nearby VA-28 (~31 km west) at Big Meadows in Shenandoah National Park, fills a spatial gap in the Mid-Atlantic region of the MDN network and provides Hg deposition data immediately west of the Washington, D.C., metropolitan area. Results for the Culpeper site f
Authors
Mark A. Engle, Allan Kolker, Douglas E. Mose, Joseph A. East, Jamey D. McCord
Mercury, trace elements and organic constituents in atmospheric fine particulate matter, Shenandoah National Park, Virginia, USA: A combined approach to sampling and analysis
Compliance with U.S. air quality regulatory standards for atmospheric fine particulate matter (PM2.5) is based on meeting average 24 hour (35 μ m−3) and yearly (15 μg m−3) mass‐per‐unit‐volume limits, regardless of PM2.5 composition. Whereas this presents a workable regulatory framework, information on particle composition is needed to assess the fate and transport of PM2.5 and determine potential
Authors
A. Kolker, M.A. Engle, W. H. Orem, J.E. Bunnell, H.E. Lerch, D. P. Krabbenhoft, M.L. Olson, J.D. McCord
Characterization and cycling of atmospheric mercury along the central US Gulf Coast
Concentrations of atmospheric Hg species, elemental Hg (Hg∘), reactive gaseous Hg (RGM), and fine particulate Hg (Hg-PM2.5) were measured at a coastal site near Weeks Bay, Alabama from April to August, 2005 and January to May, 2006. Mean concentrations of the species were 1.6 ± 0.3 ng m−3, 4.0 ± 7.5 pg m−3 and 2.7 ± 3.4 pg m−3, respectively. A strong diel pattern was observed for RGM (midday maxim
Authors
M.A. Engle, M.T. Tate, D. P. Krabbenhoft, A. Kolker, M.L. Olson, E.S. Edgerton, J.F. DeWild, A.K. McPherson
Biomarkers of mercury exposure at a mercury recycling facility in Ukraine
This study evaluates biomarkers of occupational mercury exposure among workers at a mercury recycling operation in Gorlovka, Ukraine. The 29 study participants were divided into three occupational categories for analysis: (1) those who worked in the mercury recycling operation (Group A, n = 8), (2) those who worked at the facility but not in the yard where the recycling was done (Group B, n = 14),
Authors
H.J. Gibb, K. Kozlov, J.P. Buckley, J. Centeno, V. Jurgenson, A. Kolker, K. Conko, E. Landa, B. Panov, Y. Panov, H. Xu
Investigating atmospheric mercury with the U.S. Geological Survey Mobile Mercury Laboratory
Atmospheric mercury is thought to be an important source of mercury present in fish, resulting in numerous local, statewide, tribal, and province-wide fish consumption advisories in the United States and Canada (U.S. Environmental Protection Agency, 2007a). To understand how mercury occurs in the atmosphere and its potential to be transferred from the atmosphere to the biosphere, the U.S. Geologic
Authors
Allan Kolker
Progressive oxidation of pyrite in five bituminous coal samples: An As XANES and 57Fe Mössbauer spectroscopic study
Naturally occurring pyrite commonly contains minor substituted metals and metalloids (As, Se, Hg, Cu, Ni, etc.) that can be released to the environment as a result of its weathering. Arsenic, often the most abundant minor constituent in pyrite, is a sensitive monitor of progressive pyrite oxidation in coal. To test the effect of pyrite composition and environmental parameters on the rate and exten
Authors
Allan Kolker, Frank E. Huggins
Arsenic in coal
No abstract available.
Authors
Allan Kolker, Curtis A. Palmer, Linda J. Bragg, Joseph E. Bunnell
Mercury in coal and the impact of coal quality on mercury emissions from combustion systems
The proportion of Hg in coal feedstock that is emitted by stack gases of utility power stations is a complex function of coal chemistry and properties, combustion conditions, and the positioning and type of air pollution control devices employed. Mercury in bituminous coal is found primarily within Fe-sulfides, whereas lower rank coal tends to have a greater proportion of organic-bound Hg. Prepara
Authors
Allan Kolker, Constance L. Senior, Jeffrey C. Quick
Expanding the mercury deposition network in Virginia and the U.S. mid-Atlantic region
No abstract available.
Authors
Allan Kolker, Douglas G. Mose, Shane Spitzer, Joseph A. East
Arsenic in southeastern Michigan
Arsenic levels exceeding 10 μg/L are present in hundreds of private supply wells distributed over ten counties in eastern and southeastern Michigan. Most of these wells are completed in the Mississippian Marshall Sandstone, the principal bedrock aquifer in the region, or in Pleistocene glacial or Pennsylvanian bedrock aquifers. About 70% of ground water samples taken from more than 100 wells, have
Authors
Allan Kolker, Sheridan K. Haack, William F. Cannon, D.B. Westjohn, M.-J. Kim, Laurel G. Woodruff
Introduction to mercury special issue
[No abstract available]
Authors
A. Kolker, W. Orem, P. Lechler
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
Mercury and trace element contents of Donbas coals and associated mine water in the vicinity of Donetsk, Ukraine
Mercury-rich coals in the Donets Basin (Donbas region) of Ukraine were sampled in active underground mines to assess the levels of potentially harmful elements and the potential for dispersion of metals through use of this coal. For 29 samples representing c11 to m3 Carboniferous coals, mercury contents range from 0.02 to 3.5 ppm (whole-coal dry basis). Mercury is well correlated with pyritic sulf
Authors
A. Kolker, B.S. Panov, Y.B. Panov, E. R. Landa, K.M. Conko, V.A. Korchemagin, T. Shendrik, J.D. McCord
Summary of mercury and trace element results in precipitation from the Culpeper, Virginia, Mercury Deposition Network Site (VA-08), 2002-2006
The VA-08 Mercury Deposition Network (MDN) site, southwest of Culpeper, Virginia, was established in autumn of 2002. This site, along with nearby VA-28 (~31 km west) at Big Meadows in Shenandoah National Park, fills a spatial gap in the Mid-Atlantic region of the MDN network and provides Hg deposition data immediately west of the Washington, D.C., metropolitan area. Results for the Culpeper site f
Authors
Mark A. Engle, Allan Kolker, Douglas E. Mose, Joseph A. East, Jamey D. McCord
Mercury, trace elements and organic constituents in atmospheric fine particulate matter, Shenandoah National Park, Virginia, USA: A combined approach to sampling and analysis
Compliance with U.S. air quality regulatory standards for atmospheric fine particulate matter (PM2.5) is based on meeting average 24 hour (35 μ m−3) and yearly (15 μg m−3) mass‐per‐unit‐volume limits, regardless of PM2.5 composition. Whereas this presents a workable regulatory framework, information on particle composition is needed to assess the fate and transport of PM2.5 and determine potential
Authors
A. Kolker, M.A. Engle, W. H. Orem, J.E. Bunnell, H.E. Lerch, D. P. Krabbenhoft, M.L. Olson, J.D. McCord
Characterization and cycling of atmospheric mercury along the central US Gulf Coast
Concentrations of atmospheric Hg species, elemental Hg (Hg∘), reactive gaseous Hg (RGM), and fine particulate Hg (Hg-PM2.5) were measured at a coastal site near Weeks Bay, Alabama from April to August, 2005 and January to May, 2006. Mean concentrations of the species were 1.6 ± 0.3 ng m−3, 4.0 ± 7.5 pg m−3 and 2.7 ± 3.4 pg m−3, respectively. A strong diel pattern was observed for RGM (midday maxim
Authors
M.A. Engle, M.T. Tate, D. P. Krabbenhoft, A. Kolker, M.L. Olson, E.S. Edgerton, J.F. DeWild, A.K. McPherson
Biomarkers of mercury exposure at a mercury recycling facility in Ukraine
This study evaluates biomarkers of occupational mercury exposure among workers at a mercury recycling operation in Gorlovka, Ukraine. The 29 study participants were divided into three occupational categories for analysis: (1) those who worked in the mercury recycling operation (Group A, n = 8), (2) those who worked at the facility but not in the yard where the recycling was done (Group B, n = 14),
Authors
H.J. Gibb, K. Kozlov, J.P. Buckley, J. Centeno, V. Jurgenson, A. Kolker, K. Conko, E. Landa, B. Panov, Y. Panov, H. Xu
Investigating atmospheric mercury with the U.S. Geological Survey Mobile Mercury Laboratory
Atmospheric mercury is thought to be an important source of mercury present in fish, resulting in numerous local, statewide, tribal, and province-wide fish consumption advisories in the United States and Canada (U.S. Environmental Protection Agency, 2007a). To understand how mercury occurs in the atmosphere and its potential to be transferred from the atmosphere to the biosphere, the U.S. Geologic
Authors
Allan Kolker
Progressive oxidation of pyrite in five bituminous coal samples: An As XANES and 57Fe Mössbauer spectroscopic study
Naturally occurring pyrite commonly contains minor substituted metals and metalloids (As, Se, Hg, Cu, Ni, etc.) that can be released to the environment as a result of its weathering. Arsenic, often the most abundant minor constituent in pyrite, is a sensitive monitor of progressive pyrite oxidation in coal. To test the effect of pyrite composition and environmental parameters on the rate and exten
Authors
Allan Kolker, Frank E. Huggins
Arsenic in coal
No abstract available.
Authors
Allan Kolker, Curtis A. Palmer, Linda J. Bragg, Joseph E. Bunnell
Mercury in coal and the impact of coal quality on mercury emissions from combustion systems
The proportion of Hg in coal feedstock that is emitted by stack gases of utility power stations is a complex function of coal chemistry and properties, combustion conditions, and the positioning and type of air pollution control devices employed. Mercury in bituminous coal is found primarily within Fe-sulfides, whereas lower rank coal tends to have a greater proportion of organic-bound Hg. Prepara
Authors
Allan Kolker, Constance L. Senior, Jeffrey C. Quick
Expanding the mercury deposition network in Virginia and the U.S. mid-Atlantic region
No abstract available.
Authors
Allan Kolker, Douglas G. Mose, Shane Spitzer, Joseph A. East
Arsenic in southeastern Michigan
Arsenic levels exceeding 10 μg/L are present in hundreds of private supply wells distributed over ten counties in eastern and southeastern Michigan. Most of these wells are completed in the Mississippian Marshall Sandstone, the principal bedrock aquifer in the region, or in Pleistocene glacial or Pennsylvanian bedrock aquifers. About 70% of ground water samples taken from more than 100 wells, have
Authors
Allan Kolker, Sheridan K. Haack, William F. Cannon, D.B. Westjohn, M.-J. Kim, Laurel G. Woodruff
Introduction to mercury special issue
[No abstract available]
Authors
A. Kolker, W. Orem, P. Lechler
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.