Search Results - "Stegemeier, John P"
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Uptake and Distribution of Silver in the Aquatic Plant Landoltia punctata (Duckweed) Exposed to Silver and Silver Sulfide Nanoparticles
Published in Environmental science & technology (02-05-2017)“…Aquatic ecosystems are expected to receive Ag0 and Ag2S nanoparticles (NPs) through anthropogenic waste streams. The speciation of silver in Ag-NPs affects…”
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Effect of Initial Speciation of Copper- and Silver-Based Nanoparticles on Their Long-Term Fate and Phytoavailability in Freshwater Wetland Mesocosms
Published in Environmental science & technology (07-11-2017)“…Ag0- and CuO-engineered nanomaterials (ENMs) or their sulfidized forms are introduced into freshwater wetlands through wastewater effluent and agricultural…”
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Speciation Matters: Bioavailability of Silver and Silver Sulfide Nanoparticles to Alfalfa (Medicago sativa)
Published in Environmental science & technology (21-07-2015)“…Terrestrial crops are directly exposed to silver nanoparticles (Ag-NPs) and their environmentally transformed analog silver sulfide nanoparticles (Ag2S-NPs)…”
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Effects of Sulfide Concentration and Dissolved Organic Matter Characteristics on the Structure of Nanocolloidal Metacinnabar
Published in Environmental science & technology (21-11-2017)“…Understanding the speciation of divalent mercury (Hg(II)) in aquatic systems containing dissolved organic matter (DOM) and sulfide is necessary to predict the…”
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Impacts of Pristine and Transformed Ag and Cu Engineered Nanomaterials on Surficial Sediment Microbial Communities Appear Short-Lived
Published in Environmental science & technology (01-03-2016)“…Laboratory-based studies have shown that many soluble metal and metal oxide engineered nanomaterials (ENM) exert strong toxic effects on microorganisms…”
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Aging of Dissolved Copper and Copper‐based Nanoparticles in Five Different Soils: Short‐term Kinetics vs. Long‐term Fate
Published in Journal of environmental quality (01-11-2017)“…With the growing availability and use of copper‐based nanomaterials (Cu‐NMs), there is increasing concern regarding their release and potential impact on the…”
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Speciation of Mercury in Selected Areas of the Petroleum Value Chain
Published in Environmental science & technology (06-02-2018)“…Petroleum, natural gas, and natural gas condensate can contain low levels of mercury (Hg). The speciation of Hg can affect its behavior during processing,…”
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Formation of Nanocolloidal Metacinnabar in Mercury-DOM-Sulfide Systems
Published in Environmental science & technology (01-11-2011)“…Direct determination of mercury (Hg) speciation in sulfide-containing environments is confounded by low mercury concentrations and poor analytical sensitivity…”
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