Research Topics
| Gerald J KeelerSummaryAffiliation: University of Michigan Country: USA Publications
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Detail Information
Publications
Spatial variability of mercury wet deposition in eastern Ohio: summertime meteorological case study analysis of local source influencesEmily M White
University of Michigan, Air Quality Laboratory, Ann Arbor, Michigan 48109, USA
Environ Sci Technol 43:4946-53. 2009....- Assessment of personal and community-level exposures to particulate matter among children with asthma in Detroit, Michigan, as part of Community Action Against Asthma (CAAA)Gerald J Keeler
Department of Environmental Health Sciences, University of Michigan, Ann Arbor, Michigan 48109, USA
Environ Health Perspect 110:173-81. 2002.... - Characterization of urban atmospheres during inhalation exposure studies in Detroit and Grand Rapids, MichiganGerald J Keeler
Air Quality Laboratory, The University of Michigan, Ann Arbor, Michigan 48109 2029, USA
Toxicol Pathol 35:15-22. 2007..This paper presents detailed characterization of CAPs and their sources in an effort to define possible associations between the observed health effects and source-specific ambient PM2.5... - Sources of mercury wet deposition in Eastern Ohio, USAGerald J Keeler
University of Michigan Air Quality Laboratory, Ann Arbor 48109, USA
Environ Sci Technol 40:5874-81. 2006..Meteorological analysis also indicated that a majority of the mercury deposition found at the Steubenville site was due to local and regional sources... - Characterization of complex mixtures in urban atmospheres for inhalation exposure studiesGerald J Keeler
Air Quality Laboratory, University of Michigan, Ann Arbor, MI, USA
Exp Toxicol Pathol 57:19-29. 2005..5. However, a complete understanding of the effects of complex mixtures of air pollutants and their toxicological impacts still faces many challenges... - Long-term atmospheric mercury wet deposition at Underhill, VermontGerald J Keeler
University of Michigan Air Quality Laboratory, Ann Arbor, 48109 MI, USA
Ecotoxicology 14:71-83. 2005..67) recorded at the Vermont site. Meteorological analysis indicated the highest levels of Hg in precipitation were associated with regional transport from the west, southwest, and south during the warmer months... - PM2.5-induced changes in cardiac function of hypertensive rats depend on wind direction and specific sources in Steubenville, OhioAli S Kamal
University of Michigan, Ann Arbor, MI, USA
Inhal Toxicol 23:417-30. 2011..Conclusions: Acute cardiovascular changes in response to ambient PM(2.5) exposure can be attributed to specific PM constituents and sources linked with incineration, metal processing, and iron/steel production... - Air pollution-associated changes in lung function among asthmatic children in DetroitToby C Lewis
Department of Pediatrics, University of Michigan, Ann Arbor, Michigan, USA
Environ Health Perspect 113:1068-75. 2005..Our findings suggest that levels of air pollutants in Detroit, which are above the current National Ambient Air Quality Standards, adversely affect lung function of susceptible asthmatic children... - Direct identification of trace metals in fine and ultrafine particles in the Detroit urban atmosphereSatoshi Utsunomiya
Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1063, USA
Environ Sci Technol 38:2289-97. 2004..01-1.0 microm in size, which has the longest atmospheric residence time (approximately 100 days). Increased chemical reactivity owing to the size of nanoparticles may be expected for most of the trace metal particles observed... - Effects of concentrated fine ambient particles on rat plasma levels of asymmetric dimethylarginineJ Timothy Dvonch
Department of Environmental Health Sciences, University of Michigan, Ann Arbor, 48109-2029, USA
Inhal Toxicol 16:473-80. 2004..5) at high concentrations may trigger an acute increase in circulating ADMA level. This finding has implications for the regulation of vasomotor tone by particulate pollutants and the propensity for adverse cardiovascular events... - Mercury and trace elements in cloud water and precipitation collected on Mt. Mansfield, VermontElizabeth G Malcolm
University of Michigan Air Quality, Laboratory, Ann Arbor, MI, USA
J Environ Monit 5:584-90. 2003..One possible explanation is greater in-cloud scavenging of crustal elements in precipitating than non-precipitating clouds, and greater below-cloud scavenging of crustal than anthropogenic aerosols... - Investigation of local mercury deposition from a coal-fired power plant using mercury isotopesLaura S Sherman
Department of Earth and Environmental Sciences, University of Michigan, 1100 N University Avenue, Ann Arbor, Michigan 48109, United States
Environ Sci Technol 46:382-90. 2012..As this tool is further refined through future studies, Hg stable isotopes may eventually be used to quantify local deposition of Hg emitted by large CFUBs... - Air-surface exchange of gaseous mercury over a mixed sawgrass-cattail stand within the Florida EvergladesFrank J Marsik
University of Michigan Air Quality Laboratory, Ann Arbor, Michigan 48109, USA
Environ Sci Technol 39:4739-46. 2005 - Atmospheric mercury deposition to Lake Michigan during the Lake Michigan Mass Balance StudyMatthew S Landis
The University of Michigan Air Quality Laboratory, Ann Arbor 48109, USA
Environ Sci Technol 36:4518-24. 2002..The magnitude of local anthropogenic mercury sources in the Chicago/Gary urban area suggests that emission reductions could significantly reduce atmospheric mercury deposition into Lake Michigan... - Characterization of ultrafine particle number concentration and size distribution during a summer campaign in southwest DetroitLi-Hao Young
Department of Environmental Health Sciences and Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, Ann Arbor 48109, USA
J Air Waste Manag Assoc 54:1079-90. 2004..Overall, the data indicated that fossil fuel combustion and atmospheric gas-to-particle conversion of precursor gases are the major sources of ultrafine particles in the southwest Detroit area during the summer... - Natural mercury isotope variation in coal deposits and organic soilsAbir Biswas
Department of Geological Sciences, University of Michigan, 1100 North University Avenue, Ann Arbor, Michigan 48109, USA
Environ Sci Technol 42:8303-9. 2008..This research offers a new tool for characterizing mercury inputs from natural and anthropogenic sources to the atmosphere and provides new insights into the geochemistry of mercury in coal and soils... - Atmospheric mercury in the Lake Michigan basin: influence of the Chicago/Gary urban areaMatthew S Landis
The University of Michigan Air Quality Laboratory, Ann Arbor 48109, USA
Environ Sci Technol 36:4508-17. 2002..Meteorological transport analyses also determined that local sources in the Chicago/Gary urban area significantly impacted all of the LMMBS sites indicating a broad impact to the entire Lake Michigan basin... - Uraninite and fullerene in atmospheric particulatesSatoshi Utsunomiya
Department of Nuclear Engineering and Radiological Sciences, Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-2104, USA
Environ Sci Technol 36:4943-7. 2002..Still, the presence of uranium in the very fine fraction of atmospheric particulates provides another pathway for radiation exposure... - Measurements of mercury in dew: atmospheric removal of mercury species to a wetted surfaceElizabeth G Malcolm
University of Michigan Air Quality Laboratory, Ann Arbor 48109, USA
Environ Sci Technol 36:2815-21. 2002..The first estimates of RGM deposition velocities based on mercury flux measurements are reported here and range up to 1.6 cm/s... - Automated speciated mercury measurements in MichiganMary M Lynam
University of Michigan Air Quality Laboratory, Ann Arbor, MI 48109, USA
Environ Sci Technol 39:9253-62. 2005..These may be evidence of advection of ozone and RGM over long distances to the site... - Isotopic composition and fractionation of mercury in Great Lakes precipitation and ambient airLynne E Gratz
Air Quality Laboratory, 1415 Washington Heights, SPH I Tower, University of Michigan, Ann Arbor, Michigan 48109, USA
Environ Sci Technol 44:7764-70. 2010.... - Mercury storage in surface soils in a central Washington forest and estimated release during the 2001 Rex Creek FireAbir Biswas
Department of Geological Sciences, University of Michigan, 1100 N University Ave, Ann Arbor, Michigan 48109, USA
Sci Total Environ 404:129-38. 2008..This study has implications for global estimates of Hg storage in forests and release to the atmosphere during wildfires... - Acute effects of ambient particulate matter on blood pressure: differential effects across urban communitiesJ Timothy Dvonch
Department of Environmental Health Sciences, University of Michigan, 109 South Observatory, Ann Arbor, MI 48109 2029, USA
Hypertension 53:853-9. 2009..Short-term increases in exposure to ambient PM(2.5) are associated with acute increases in BP in adults, especially within communities with elevated levels of exposure... - Estimation and mapping of wet and dry mercury deposition across northeastern North AmericaEric K Miller
Ecosystems Research Group, Ltd, PO Box 1227, Norwich, VT 05055, USA
Ecotoxicology 14:53-70. 2005..The estimated net GEM and RGM fluxes were each greater than or equal to wet deposition in many areas. Mercury assimilation by plant foliage may provide a substantial input of methyl-mercury (MeHg) to ecosystems... - Deposition and emission of gaseous mercury to and from Lake Michigan during the Lake Michigan Mass Balance Study (July, 1994-October, 1995)Alan F Vette
The University of Michigan Air Quality Laboratory, Ann Arbor 48109 2029, USA
Environ Sci Technol 36:4525-32. 2002..The modeled dry deposition fluxes of Hg2+ (286-797 kg yr(-1)) are very similar to the emission fluxes of Hg0 (320-959 kg yr(-1)), depending on the gaseous Hg2+ concentration used in the model... - Mass balance assessment for mercury in Lake ChamplainNing Gao
Department of Chemistry, St Lawrence University, Canton, New York 13617, USA
Environ Sci Technol 40:82-9. 2006..It also provides new estimates of volatilization fluxes across different lake segments and sedimentation loss in the lake... - Cloud water and throughfall deposition of mercury and trace elements in a high elevation spruce-fir forest at Mt. Mansfield, VermontSean T Lawson
University of Vermont, Burlington, VT, USA
J Environ Monit 5:578-83. 2003..Our results indicate that cloud water and Hg deposition at Mt. Mansfield are likely to have considerable ecological effects... - Influence of snow and ice crystal formation and accumulation on mercury deposition to the ArcticThomas A Douglas
Cold Regions Research and Engineering Laboratory, Fort Wainwright, Alaska, USA
Environ Sci Technol 42:1542-51. 2008..The model highlights the importance of the formation and postdeposition crystallographic history of snow or ice crystals in determining the fate and concentration of mercury in the cryosphere...