Search Results - "Keeler, G.J."

Isotopic record of lead pollution in lake sediments from the northeastern United States by Graney, J.R., Halliday, A.N., Keeler, G.J., Nriagu, J.O., Robbins, J.A., Norton, S.A.

“…Although it is common knowledge that Pb concentrations have increased in lake sediments in the northeastern United States over the last 150 years, the…”
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Assessing Atmospheric Deposition of Mercury in Florida, USA: Local versus Global Sources and Models versus Measurements by Sillman, S., Marsik, F., Dvonch, J. T., Keeler, G.J.

“…We compare results from the CMAQ photochemical model for mercury deposition in Florida with measurements from 2009 associated with the Florida Mercury TMDL…”
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Release of mercury from Rocky Mountain forest fires by Biswas, A, Blum, J.D, Klaue, B, Keeler, G.J

“…Concentrations of mercury (Hg) in soil profiles and vegetation were examined in unburned areas and in areas recently burned by wildfires of low, medium, and…”
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Methyl and total mercury in precipitation in the Great Lakes region by Hall, B.D., Manolopoulos, H., Hurley, J.P., Schauer, J.J., St. Louis, V.L., Kenski, D., Graydon, J., Babiarz, C.L., Cleckner, L.B., Keeler, G.J.

“…Methylmercury (MeHg) and total mercury (THg) concentrations were measured in precipitation collected from five US sites in the Great Lakes region: three sites…”
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Use of Elemental Tracers to Source Apportion Mercury in South Florida Precipitation by Dvonch, J. Timothy, Graney, Joseph R, Keeler, Gerald J, Stevens, Robert K

“…Source−receptor relationships for mercury (Hg) and other trace elements wet deposited in south Florida were investigated using daily event precipitation…”
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Factors controlling mercury transport in an upland forested catchment. [Erratum: Feb 1999, v. 110 (1/2), p. 213.] by Scherbatskoy, T, Shanley, J.B, Keeler, G.J

“…Total mercury (Hg) deposition and input/output relationships were investigated in an 11-ha deciduous forested catchment in northern Vermont as part of ongoing…”
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Assessment of PM10 Concentrations from Domestic Biomass Fuel Combustion in Two Rural Bolivian Highland Villages by Albalak, Rachel, Keeler, Gerald J, Frisancho, A. Roberto, Haber, Michael

“…PM10 concentrations were measured in two contrasting rural Bolivian villages that cook with biomass fuels. In one of the villages, cooking was done exclusively…”
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An investigation of source–receptor relationships for mercury in south Florida using event precipitation data by Dvonch, J.T, Graney, J.R, Marsik, F.J, Keeler, G.J, Stevens, R.K

“…A recent pilot study suggested that local anthropogenic sources may play an important role in the atmospheric deposition of mercury (Hg) in South Florida. To…”
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examination of current Hg deposition and export in Fenno-Scandian catchments by Lee, Y.H, Keeler, G.J

“…The input and output flux data of total Hg (THg) and methylmercury (MeHg) from three catchments located in different geographical regions in Sweden and one…”
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Assessment of PM[sub 10] concentrations from domestic biomass fuel combustion in two rural Bolivian highland villages by Albalak, R., Haber, M., Keeler, G.J., Frisancho, A.R.

“…PM[sub 10] concentrations were measured in two contrasting rural Bolivian villages that cook with biomass fuels. In one of the villages, cooking was done…”
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Particle size distributions of atmospheric mercury in urban and rural areas by Pirrone, N., Keeler, G.J., Allegrini, I.

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Field comparison of PM 2.5 teom and PM 2.5 manual filter-based measurement methods in urban atmospheres by Dvonch, J.T, Marsik, F.J, Keeler, G.J, Robins, T.G, Yip, F, Morishita, M

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Microwave digestion and analysis of foliage for total mercury by cold vapor atomic fluorescence spectroscopy by Rea, A.W, Keeler, G.J

“…A microwave technique for digesting foliage samples was developed and evaluated for quantifying low levels of Hg by cold vapor atomic fluorescence…”
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Field comparison of PM2.5 TEOM and PM2.5 manual filter-based measurement methods in urban atmospheres by DVONCH, J. T, MARSIK, F. J, KEELER, G. J, ROBINS, T. G, YIP, F, MORISHITA, M

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Spatial representativeness of trace element ratios by Keeler, Gerald J, Samson, Perry J

“…Air samples were collected at six sites in the northeastern US during August 1983 and analyzed for trace element concentrations. The probability of transport…”
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Exposures to Acidic Aerosols by Spengler, J. D., Keeler, G. J., Koutrakis, P., Ryan, P. B., Raizenne, M., Franklin, C. A.

“…Ambient monitoring of acid aerosols in four U.S. cities and in a rural region of southern Ontario clearly show distinct periods of strong acidity. Measurements…”
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Acid rain and atmospheric chemistry at Allegheny Mountain by Pierson, William R, Brachaczek, Wanda W, Grose, Robert A, Japar, Steven M, Norbeck, Joseph M, Keeler, Gerald J

“…Rain, collected at Allegheny mountain and Laurel hill during August 1983, had a volume-weighted average pH of 3.5. Sulphuric and nitric acids accounted for…”
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Integrated microtransducers and microelectronics for environmental monitoring by Martin, S.M., Strong, T.D., Gebara, F.H., Kraver, K.L., Keeler, G.J., Brown, R.B.

“…Current research on a microsystem for the remote analysis of rainwater is presented. This project combines work in low-power microelectronics,…”
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Indoor and outdoor concentrations of inorganic acidic aerosols and gases by Brauer, M, Koutrakis, P, Keeler, G J, Spengler, J D

“…Annular denuder-filter pack sampling systems were used to make indoor and outdoor measurements of aerosol strong H+, SO4(2-), NH4+, NO3- and NO2-, and the…”
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