Search Results - "Witter, Amy E"

Determination of oxygen, nitrogen, and sulfur-containing polycyclic aromatic hydrocarbons (PAHs) in urban stream sediments by Witter, Amy E., Nguyen, Minh H.

“…Recent studies indicate that PAH transformation products such as ketone or quinone-substituted PAHs (OPAHs) are potent aryl hydrocarbon receptor (AhR)…”
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Acute toxicity of petroleum asphalt seal coat leachates to Ceriodaphnia dubia is linked to polymer preservatives by Witter, Amy E.

“…Low-VOC waterborne asphalt-emulsion (AE) seal coat is considered more sustainable than solvent-based coal-tar emulsion seal coat because asphalt emulsions…”
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Quantification of azaarenes, hydroxylated azaarene derivatives, and other polar compounds released in urban runoff from two commercial sealcoat products by Witter, Amy E.

“…Sealcoat is an emulsified coating product applied to asphalt to protect against surface weathering. Sealcoat products contain coal-tar (CT) or…”
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Competition among marine phytoplankton for different chelated iron species by Hutchins, David A, Witter, Amy E, Butler, Alison, Luther, George W

“…Dissolved-iron availability plays a critical role in controlling phytoplankton growth in the oceans,. The dissolved iron is overwhelmingly (∼99%) bound to…”
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Coal-tar-based sealcoated pavement: A major PAH source to urban stream sediments by WITTER, Amy E, NGUYEN, Minh H, BAIDAR, Sunil, SAK, Peter B

“…We used land-use analysis, PAH concentrations and assemblages, and multivariate statistics to identify sediment PAH sources in a small (~1303 km(2)) urbanizing…”
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Reply to letter on “Coal-tar-based sealcoated pavement: A major PAH source to urban stream sediments” by Witter, Amy E., Sak, Peter B.

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Response to O'Reilly's second letter to the editor on “Coal-tar-based sealcoated pavement: A major PAH source to urban stream sediments” by Witter, Amy E., Sak, Peter B.

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Determination of conditional stability constants and kinetic constants for strong model Fe-binding ligands in seawater by Witter, Amy E., Hutchins, David A., Butler, Alison, Luther, George W.

“…Conditional stability constants and the rates of formation and dissociation for Fe 3+ complexation with nine model ligands were measured in chelexed,…”
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Iron speciation in the Arabian Sea by Witter, Amy E., Lewis, Brent L., Luther III, George W.

“…Fe(III) speciation was measured in seawater collected as part of the United States Joint Global Ocean Flux (US JGOFS) Arabian Sea Process Study, Cruise TN045,…”
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Leading the Frontier: Successful Integration of an Adult BMT Hospital-Based Outpatient Practice by Frye, Brenda, PA-C, DHSc, McLean, Patricia, APRN, CNP, Benz, Michel, RN, MSN, Hogan, William J., MBBCh, Ewoldt, Lori, M.A, Witter, Amy E., PA-C, Heidler-Winter, Gretchen, APRN, CNP

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Spectrophotometric measurement of seawater carbohydrate concentrations in neritic and oceanic waters from the U.S. Middle Atlantic Bight and the Delaware estuary by Witter, Amy E, Luther, George W

“…Total carbohydrate concentrations were measured in unfiltered seawater samples collected in the U.S. Middle Atlantic Bight during spring 1998, and in the…”
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Chemical characterization of organic constituents from sulfide-rich produced water using gas chromatography/mass spectrometry by Witter, Amy E., Jones, A. Daniel

“…Dichloromethane extracts of oil field wastewater samples collected over a period of 3 months were characterized using gas chromatography/mass spectrometry…”
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"Coal-tar-based sealcoated pavement: A major PAH source to urban stream sediments" by Witter, Amy E, Sak, Peter B

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Comparison of methods for inorganic sulfur speciation in a petroleum production effluent by Witter, Amy E., Jones, A. Daniel

“…Multiple analytical techniques were compared for identification and quantification of inorganic sulfur species present in a sulfidic waste effluent (produced…”
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Variation in Fe-organic complexation with depth in the Northwestern Atlantic Ocean as determined using a kinetic approach by Witter, Amy E., Luther, George W.

“…1-nitroso-2-napthol (1N2N) was used as a complexing ligand to study Fe speciation and the kinetic interaction of Fe 3+ with excess organic ligands in seawater…”
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CHEMICAL CHARACTERIZATION OF ORGANIC CONSTITUENTS FROM SULFIDE-RICH PRODUCED WATER USING GAS CHROMATOGRAPHY/MASS SPECTROMETRY by Witter, Amy E., Jones, A. Daniel

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