Search Results - "Parsons, Michael B."

Characteristics and environmental aspects of slag: A review by Piatak, Nadine M., Parsons, Michael B., Seal, Robert R.

“…•Summarize mineralogy and geochemistry of ferrous and non-ferrous slags.•Discuss potential environmental issues related to weathering of slag dumps.•Outline…”
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Gastrointestinal Microbes Increase Arsenic Bioaccessibility of Ingested Mine Tailings Using the Simulator of the Human Intestinal Microbial Ecosystem by Laird, Brian D, Van de Wiele, Tom R, Corriveau, Madeleine C, Jamieson, Heather E, Parsons, Michael B, Verstraete, Willy, Siciliano, Steven D

“…It is widely accepted that the use of total metal concentrations in soil overestimates metal risk from human ingestion of contaminated soils. In vitro…”
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Speciation and bioavailability of mercury in well-mixed estuarine sediments by Sunderland, Elsie M., Gobas, Frank A.P.C., Heyes, Andrew, Branfireun, Brian A., Bayer, Angelika K., Cranston, Raymond E., Parsons, Michael B.

“…Despite regulations controlling anthropogenic mercury sources in North America, high levels of mercury in coastal fish and shellfish are an ongoing problem in…”
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Sources of geogenic arsenic in well water associated with granitic bedrock from Nova Scotia, Canada by Maciag, Bryan J., Brenan, James M., Parsons, Michael B., Kennedy, Gavin W.

“…Arsenic toxicity in drinking water is a global issue, with chronic exposure causing cancer and other health concerns. Groundwater from geochemically similar…”
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Geochemical and mineralogical controls on trace element release from the Penn Mine base-metal slag dump, California by Parsons, Michael B, Bird, Dennis K, Einaudi, Marco T, Alpers, Charles N

“…Base-metal slag deposits at the Penn Mine in Calaveras County, California, are a source of environmental contamination through leaching of potentially toxic…”
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Organic matter is a predominant control on total mercury concentration of near-surface lake sediments across a boreal to low Arctic tundra transect in northern Canada by Galloway, Jennifer M., Parsons, Michael B., Ardakani, Omid H., Falck, Hendrik, Fewster, Richard E., Swindles, Graeme T., Sanei, Hamed, Palmer, Michael J., Nasser, Nawaf A., Patterson, R. Timothy

“…Mercury (Hg) is a bioavailable and toxic element with concentrations that are persistently high or rising in some Arctic and subarctic lakes despite reduced…”
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Effects of Soil Composition and Mineralogy on the Bioaccessibility of Arsenic from Tailings and Soil in Gold Mine Districts of Nova Scotia by Meunier, Louise, Walker, Stephen R, Wragg, Joanna, Parsons, Michael B, Koch, Iris, Jamieson, Heather E, Reimer, Kenneth J

“…Bioaccessibility tests and mineralogical analyses were performed on arsenic-contaminated tailings and soils from gold mine districts of Nova Scotia, Canada, to…”
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Occurrence and mobility of thiolated arsenic in legacy mine tailings by Ali, Jaabir D., Guatame-Garcia, Adriana, Jamieson, Heather E., Parsons, Michael B., Leybourne, Matthew I., Koch, Iris, Weber, Kela P., Patch, David J., Harrison, Anna L., Vriens, Bas

“…We studied the occurrence of dissolved thiolated Arsenic (As) in legacy tailings systems in Ontario and Nova Scotia, Canada, and used aqueous and mineralogical…”
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Lake-specific controls on the long-term stability of mining-related, legacy arsenic contamination and geochemical baselines in a changing northern environment, Tundra Mine, Northwest Territories, Canada by Miller, Clare B., Parsons, Michael B., Jamieson, Heather E., Swindles, Graeme T., Nasser, Nawaf A., Galloway, Jennifer M.

“…Climate change is influencing the biogeochemistry of northern lake ecosystems. These changes may affect the mobility of naturally occurring metal(loid)s and…”
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Arsenic mobility in weathered gold mine tailings under a low-organic soil cover by DeSisto, Stephanie L., Jamieson, Heather E., Parsons, Michael B.

“…Historical gold mining operations in Nova Scotia, Canada, resulted in numerous deposits of publicly accessible, arsenic (As)-rich mine waste that has weathered…”
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Influence of late-Holocene climate change on the solid-phase speciation and long-term stability of arsenic in sub-Arctic lake sediments by Miller, Clare B., Parsons, Michael B., Jamieson, Heather E., Ardakani, Omid H., Gregory, Braden R.B., Galloway, Jennifer M.

“…Sediment cores were collected from two lakes in the Courageous Lake Greenstone Belt (CLGB), central Northwest Territories, Canada, to examine the influence of…”
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Mediation of arsenic mobility by organic matter in mining-impacted sediment from sub‐Arctic lakes: implications for environmental monitoring in a warming climate by Miller, Clare B., Parsons, Michael B., Jamieson, Heather E., Ardakani, Omid H., Patterson, R. Timothy, Galloway, Jennifer M.

“…Arsenic (As) is commonly sequestered at the sediment–water interface (SWI) in mining-impacted lakes through adsorption and/or co-precipitation with authigenic…”
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Influence of hardpan layers on arsenic mobility in historical gold mine tailings by DeSisto, Stephanie L., Jamieson, Heather E., Parsons, Michael B.

“…► Hardpan cements range from nearly pure scorodite to predominantly HFA with minor HFO. ► Localized, pH-dependent, As-cycling occurs within each hardpan. ►…”
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Organic matter control on the distribution of arsenic in lake sediments impacted by ~65years of gold ore processing in subarctic Canada by Galloway, Jennifer M., Swindles, Graeme T., Jamieson, Heather E., Palmer, Michael, Parsons, Michael B., Sanei, Hamed, Macumber, Andrew L., Timothy Patterson, R., Falck, Hendrik

“…Climate change is profoundly affecting seasonality, biological productivity, and hydrology in high northern latitudes. In sensitive subarctic environments…”
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Arsenic mineralogy of near-surface tailings and soils; influences on arsenic mobility and bioaccessibility in the Nova Scotia gold mining districts by Walker, Stephen R, Parsons, Michael B, Jamieson, Heather E, Lanzirotti, Antonio

“…The mineral form, grain size and texture of As-bearing particles are important factors influencing the risk to human health associated with exposure to…”
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Downstream changes in antimony and arsenic speciation in sediments at a mesothermal gold deposit in British Columbia, Canada by Beauchemin, Suzanne, Kwong, Y.T. John, Desbarats, Alexandre J., MacKinnon, Ted, Percival, Jeanne B., Parsons, Michael B., Pandya, Kumi

“…► We study the mobility of antimony in the vicinity of a mesothermal gold deposit. ► Stibnite oxidizes faster than arsenopyrite. ► Secondary antimony species…”
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Geochemistry of mine waters draining a low-sulfide, gold-quartz vein deposit, Bralorne, British Columbia by Desbarats, Alexandre J., Parsons, Michael B., Percival, Jeanne B., Beauchemin, Suzanne, John Kwong, Y.T.

“…► Mine waters contain As and Sb concentrations up to 3304 and 349 μg/L, respectively. ► Oxidation rate of arsenopyrite is 25 times slower than that of pyrite…”
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Impact of historical gold mining activities on marine sediments in Wine Harbour, Nova Scotia, Canada by Little, Megan E, Parsons, Michael B, Law, Brent A, Milligan, Timothy G., Smith, John N

“…Past investigations at historical gold (Au) districts in Nova Scotia, Canada have identified elevated concentrations of arsenic (As) and mercury (Hg) in nearby…”
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Identification and Characterization of Arsenic and Metal Compounds in Contaminated Soil, Mine Tailings, and House Dust Using Synchrotron-Based Microanalysis by Jamieson, Heather E, Walker, Stephen R, Andrade, Claudio F, Wrye, Lori A, Rasmussen, Pat E, Lanzirotti, Antonio, Parsons, Michael B

“…A comprehensive understanding of the risk associated with metal-rich soils and other materials includes identification of the solid phases hosting the metals…”
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Mineralogical characterization of mine waste by Jamieson, Heather E., Walker, Stephen R., Parsons, Michael B.

“…•Mineral characterization in mine waste is critical for prediction of metal leaching.•Analytical methods and examples are reviewed, including advanced…”
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