Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications by: Pedatsur Neta (Fed)

Displaying 51 - 75 of 150

Rate Constants for Reaction of 1,2-Dimethylimidazole With Benzyl Bromide in Ionic Liquids and Organic Solvents

April 1, 2004

Author(s)

A Skrzypczak, Pedatsur Neta

The rate constant for the Menschukin reaction of 1,2-dimethylimidazole (DMI) with benzyl bromide to produce 3-benzyl-1,2-dimethylimidazolium bromide was determined in a number of ionic liquids and molecular organic solvents. The rate constants in 12 ionic

Dechlorination of Polychlorinated Biphenyls in Industrial Transformer Oil by Radiolytic and Photolytic Methods

December 1, 2003

Author(s)

C G. Jones, Joseph Silverman, M I. Al-Sheikhly, Pedatsur Neta, Dianne L. Poster

Used electrical transformer oils containing low (nearly equal to} 95 g g -1) or high (>800,000 g g -1) concentrations of polychlorinated biphenyls (PCBs) were treated using electron, gamma, and ultraviolet radiation and the efficiency of dechlorination by

Pulse Radiolysis Study of the Reactions of Hydrogen Atoms in the Ionic Liquid Methyltributylammonium Bis[(trifluoromethyl)sulfonyl)]imide

November 1, 2003

Author(s)

J Grodkowski, James F. Wishart, Pedatsur Neta

Reactions of hydrogen atoms with pyrene, phenanthrene, benzophenone, 2-propanol, and crotonic acid in the ionic liquid methyltributylammonium bis (trifluoromethylsulfonly)imide (R 4NNTf 2) were studied by pulse radiolysis. Radiolysis of the ionic liquid

Diffusion-Controlled Electron-Transfer Reactions in Ionic Liquids

October 1, 2003

Author(s)

A Skrzypczak, Pedatsur Neta

The Reactions of Pyridinyl

Radiolytic Reactions of Monochloramine in Aqueous Solutions

September 1, 2003

Author(s)

G A. Poskrebyshev, Robert E. Huie, Pedatsur Neta

Monochloramine reacts with hydrated electrons very rapidly, k(NH 2CI + e aq-) = (2.2 0.2) x 10 10 L mol -1, to produce oNH 2 radicals. It reacts with oOH radicals more slowly, k(NH 2Cl + oOH) = (5.2 0.6) x 10 8 L mol -1 s -1, to produce oNHCl radicals

Degradation of PCBs in a Marine Sediment Treated with Ionizing and UV Radiation

July 25, 2003

Author(s)

Dianne L. Poster, M Chaychian, Pedatsur Neta, Robert E. Huie, Joseph Silverman, M I. Al-Sheikhly

The Rate and Equilibrium Constants for the Reaction NO 3 + Cl - forward arrow over back arrow} NO 3 - + Cl in Aqueous Solutions

March 1, 2003

Author(s)

G A. Poskrebyshev, Robert E. Huie, Pedatsur Neta

The rate and equilibrium constants for reaction (1): NO 3 + Cl - back arrow over forward arrow} Cl + NO 3 - in aqueous solutions were studied by pulse radiolysis. The formation and decay of the nitrate radical, NO 3, and the dichloride radical, Cl 2 -, in

Electrospray Ionization Mass-Spectrometry of Ionic Liquids and Determination of Their Solubility in Water

January 1, 2003

Author(s)

Z B. Alfassi, Robert E. Huie, B L. Milman, Pedatsur Neta

Electrospray ionization-mass spectrometry is used to detect both the cations (C +) and the anions (A') of ionic liquids (CA) in aqueous methanol solutions. In addition to the main peaks of the parent ions, fragmentation products are observed upon

Spectrum and Reactivity of the Solvated Electron in the Ionic Liquid

January 1, 2003

Author(s)

James F. Wishart, Pedatsur Neta

st pulse radiolysis transient absorption experiments were conducted on the ionic liquid methyltributylammonium bis(tribluoromethylsulfonyl)imide (R 4NNTf 2). The solvated electron was observed to have a very broad absorption band peaking at 1400 nm (ε = 2

Formation and Reaction of Br 2 - Radicals in the Ionic Liquid Methyltributylammonium Gis(trifluoromethylsufonyl)imide and in Other Solvents

November 1, 2002

Author(s)

J Grodkowski, Pedatsur Neta

Reaction of solvated electrons with BrCh 2Ch 2Br produces Br - and CH 2CH 2Br, which decomposes rapidly into CH 2=CH 2 and Br with Br 2 -. The stability of Br 2 - is much greater in the ionic liquid and in acetonitrile than in water or alcohols. The rate

Radiolytic Dechlorination of Polychlorinated Biphenyls in Transformer Oil and in Marine Sediment

November 1, 2002

Author(s)

M Chaychian, C A. Jones, Dianne L. Poster, Joseph Silverman, Pedatsur Neta, Robert E. Huie, M I. Al-Sheikhly

Radiolytic dechlorination of PCBs in transformer oil and in marine sediments has been studied. At low PCB concentrations, complete degradation of the PCBs in transformer oil was achieved without degradation of the oil. Addition of an organic base

Temperature Dependence of the Acid Dissociation Constant of the Hydroxyl Radical

November 1, 2002

Author(s)

G A. Poskrebyshev, Pedatsur Neta, Robert E. Huie

The acid dissociation constant of the hydroxyl radical in aqueous solution was determined by pulse radiolysis from the pH dependence of the rate constant for reaction of the OH/O - radical with benzoate ions. The rate constant and the pKa( OH) values were

Reaction Kinetics in the Ionic Liquid Methyltributylammonium Bis(trifluoro- methylsulfonyl)imide. Pulse Radiolysis Study of 4-Mercaptobenzoic Acid

October 1, 2002

Author(s)

J Grodkowski, Pedatsur Neta

Hydrogen-abstraction reactions of various radicals with 4-mercaptobenzoic acid (MB) to produce the 4-carboxyphenylthiyl radical have been studied by pulse radiolysis in aqueous solutions and in the ionic liquid methyltributylammonium bis