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in subjects: "Barium"

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Generation of H sup minus , H sub 2 (v double prime ), and H atoms by H sub 2 sup + and H sub 3 sup + ions incident upon barium surfaces

The generation of vibrationally excited molecules by electron excitation collisions and the subsequent generation of negative ions by dissociative attachment to these molecules has become a standard model for volume source operation. These processes have been supplemented recently by the demonstration of atom-surface recombination to form vibrationally excited molecules, and enhanced negative ion formation by protons incident upon barium electrodes. In this paper we consider the additional proc… more

Date: January 1, 1989

Creator: Hiskes, J.R. & Karo, A.M.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Literature review of the concentration ratios of selected radionuclides in freshwater and marine fish

Concentration ratios (CR's) used for modeling the uptake and food chain transport of radionuclides in fish have usually been conservative; that is, at the high end of reported values. This practice ensures that the dose to the consumer of contaminated fish will not be underestimated. In many models, however, conservative values have been used for all variables that have any uncertainty associated with them. As a result the dose to the consumer is overestimated. Realistic CR values need to be de… more

Date: September 1, 1986

Creator: Poston, T. M. & Klopfer, D. C.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Chemiluminescence from the reaction of Ba /sup 3/D with nitric oxide

The reaction of laser excited Ba*(/sup 3/D) states with nitric oxide is presented. BaO product is not detected, although the channel is thermodynamically open, and instead chemiluminescence is observed. Experiments which suggest that radiative recombination, Ba + NO ..-->.. BaNO* ..-->.. BaNO, is the observed reaction channel will also be presented.

Date: January 5, 1977

Creator: Johnson, S. A.; Solarz, R. W.; Dubrin, J. W. & Brotzmann, R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Trace elements in the terrestrial environment of a coal-fired powerhouse

A coal-fired powerhouse at the Savannah River Plant, Aiken, South Carolina operated for more than 20 years without electrostatic precipitators and consumed about 360,000,000 kilograms of coal per year. Twenty-nine trace elements were measured in fly ash, and in samples of soil, vegetation, and ground water collected along a 29-km traverse centered on the powerhouse. There were statistically significant effects of the stack releases upon the concentration of Ba, Be, Cu, Hg, Mn, Se, and Sr in soi… more

Date: September 1, 1977

Creator: Horton, J. H.; Dorsett, R. S. & Cooper, R. E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Data report: Illinois, Indiana, Kentucky, Tennessee, and Ohio. National Uranium Resource Evaluation Program. Hydrogeochemical and stream sediment reconnaissance

This report presents the results of ground water, stream water, and stream sediment reconnaissance in Illinois, Indiana, Kentucky, Tennessee, and Ohio. The following sample types were collected in each state: Illinois - 716 stream sediment, 1046 ground water, 337 stream water; Indiana - 126 stream sediment, 443 ground water, 111 stream water; Kentucky - 4901 stream sediment, 6408 ground water, 3966 stream water; Tennessee - 3309 stream sediment, 3574 ground water, 1584 stream water; Ohio - 1214… more

Date: February 1, 1982

Creator: Sargent, K. A.; Cook, J. R. & Fay, W. M.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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General Chemistry Division quarterly report, July--September 1977

Analytical research and development work is reported on multielement analysis, time-resolved spectroscopy, fluorescence analysis, ionization potential of NP, excited state chemistry, polarized x ray sources, potentiometric titration of Na, determination of TATB in DMSO, determination of nitrobenzene in TATB, analysis of explosive composites, mass spectrometer automation, mass spectra calculation, solids formation in geothermal brine, water quality laboratory automation, aerosol coagulation, and… more

Date: November 30, 1977

Creator: Harrar, J.E. (ed.)

Item Type: Report

Partner: UNT Libraries Government Documents Department

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National uranium resource evaluation program: hydrogeochemical and stream sediment reconnaissance basic data for Ely quadrangle, Nevada; Utah

Field and laboratory data are presented for 1937 sediment samples from the Ely Quadrangle, Nevada; Utah. The samples were collected by Savannah River Laboratory; laboratory analysis and data reporting were performed by the Uranium Resource Evaluation Project at Oak Ridge, Tennessee.

Date: October 15, 1981

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Uranium hydrogeochemical and stream sediment reconnaissance data release for the Elk City NTMS Quadrangle, Idaho/Montana, including concentrations of forty-five additional elements

Totals of 1580 water and 1720 sediment samples were collected from 1754 locations in the quadrangle. Elemental concentration, field measurement, weather, geologic, and geographic data for each sample location are listed for waters in Appendix I-A and for sediments in Appendix I-B. Uranium/thorium ratios for sediment samples are also included in Appendix I-B. All elemental analyses were performed at the LASL. Water samples were initially analyzed for uranium by fluorometry. All water samples con… more

Date: July 1, 1980

Creator: Broxton, D. E. & Beyth, M.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Characterization of geothermal solid wastes

The compositions of 5 major types of geothermal wastes have been determined, and samples have been subjected to EPA recommended extraction tests to determine if they contain toxic metals that would classify the wastes as hazardous. Of the samples tested, the extracts of geothermal brines clearly contain levels of As, Ba and Pb exceeding the maximum allowed concentrations that characterize wastes as toxic. Only one other waste type, geothermal scale, exhibited EP toxicity. Pb was found in the ex… more

Date: July 1, 1981

Creator: Morris, W.F. & Stephens, F.B.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Investigating the impact of drilling mud and its major components on bivalve species of Georges bank. Progress report No. 2, February 28, 1979-November 1, 1979

Results described in progress report No. 1 indicate that 0.3-1.0 grams of drilling mud/liter of seawater can stress bivalve molluscs and that metallic components of drilling muds are assimilated by these organisms. The results posed questions about the short- and long-term effects of stress on energy stores, reproduction, and metal assimilation; accordingly, this year's research program has focused on these three areas and on a continued chemical characterization of the drilling muds used.

Date: November 1, 1979

Item Type: Report

Partner: UNT Libraries Government Documents Department

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A Modified Pyroelectric Sodium Fluoride Carrier Distillation Medthod For The Spectrographic Analysis Of Impurities In Plutonium

A modification of the pyroelectric sodium fluoride carrier distillation method for analysis of impurities in plutonium metal is described. The metal is dissolved. Plutonium is precipitated and treated with nitric acid. The slurry obtained is dried and ignited. The resultant low density oxide is mixed with sodium fluoride and pressed into a pellet for arcing. Cobalt is used as the internal standard for densitometric using visual comparisons against prepared standards. The procedural modification… more

Date: August 1, 1966

Creator: Schreiber, G. A. & Barrick, C. W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Hydrogeochemical and stream sediment reconnaissance basic data for Carlsbad quadrangle, New Mexico

Field and laboratory data are presented for 467 water samples and 1680 sediment samples from the Carlsbad Quadrangle, New Mexico. The samples were collected and uranium analysis performed by Los Alamos National Laboratory; multielement analysis and data reporting were performed by the Uranium Resource Evaluation Project at Oak Ridge, Tennessee.

Date: August 31, 1981

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Solvent Refined Coal (SRC) process: trace elements. Research and development report No. 53, interim report No. 31, August 1976-July 1977. Volume III. Pilot plant development work. Part 6. [Fate of 36 trace elements]

Results are presented on a study of the distribution and fate of 34 trace elements in the Solvent Refined Coal Process at the pilot plant located at Fort Lewis, Washington, and operated by The Pittsburg and Midway Coal Mining Co. under contract with the US Department of Energy. Neutron activation analysis was used to determine Ti, V, Ca, Mg, Al, Cl, Mn, As, Sb, Se, Hg, Br, Co, Ni, Cr, Fe, Na, Rb, Cs, K, Sc, Tb, Eu, Sm, Ce, La, Sr, Ba, Th, Hf, Ta, Ga, Zr, and Cu in feed coals, process solvent, S… more

Date: March 1, 1980

Item Type: Report

Partner: UNT Libraries Government Documents Department

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The Half-Life and Gamma-Ray Abundance of Cs-137

The half life of cesium-137 was determined to be 29.2 plus or minus 0.3 years by an all mass spectrometric method. The abundance of the 662 Kev gamma- ray in the decay scheme was found to be 0.82 plus or minus 0.03 per beta disintegration. In the course of the work, the isotopic distribution of natural barium was determined with improved accuracy to be (72.11 plus or minus 0.06)% 138, (11.18 plus or minus 0.05)% 137, (7.77 plus or minus 0.02)% 136, (6.42 plus or minus 0.03)% 135, (2.33 plus or … more

Date: June 1962

Creator: Rider, B. F.; Peterson, J. P., Jr. & Ruiz, C. P.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

IN SITU ACTIVATION ANALYSIS OF MARINE SEDIMENTS WITH $sup 252$Cf

No Description Available.

Date: December 31, 1972

Creator: Wogman, N A; Rieck, Jr, H G; Kosorok, J R & Perkins, R W

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Natural repository analogue program. Progress report, October 1-December 31, 1981

The final draft of a paper entitled The Oklo Reactors: Natural Analogs to Nuclear Waste Repositories has been submitted for publication. This paper discusses the chemical stability of the fossil reactors with respect to uranium, neodymium, ruthenium, and technetium, the transport of elements in the geologic environment at Oklo; and the geochemical conditions that may have influenced these processes. Measurements of barium isotopic ratios limit the abundance of fissiogenic barium to <10/sup -7/ … more

Date: March 1, 1982

Creator: Curtis, D.B. (comp.)

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Evaluation of Synroc-C as a second-generation waste form

The durability of a crystalline titanate waste form, Synroc-C, was evaluated as a second-generation waste form by leach testing. Tests using both monolith and high surface area powdered samples were used with silicate water and brines at 90/sup 0/C and 150/sup 0/C for up to 90 days. In addition, low surface area-to-volume ratio, 1-day leach tests were conducted between 90/sup 0/C and 250/sup 0/C to determine forward-direction leach rates and activation energies. Dissolution rates of Cs, Mo, Ba,… more

Date: August 1, 1986

Creator: Shade, J.W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Inorganic constituents in American lignites

Both the discrete mineral phases and the ion-exchangeable inorganic components of lignites from Texas, North Dakota, and Montana have been studied. The ion-exchangeable cations and the carboxyl groups with which they are associated were characterized by ion exchange methods utilizing ammonium acetate and barium acetate, respectively. Na, K, Mg, Ca, Sr, and Ba were found to be present in all three coals. It was found that Ca and Mg were the most abundant cations and that 40 to 60% of the carboxy… more

Date: April 1, 1980

Creator: Morgan, M. E.; Jenkins, R. G. & Walker, P. L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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General Chemistry Division quarterly report, January--March 1977

Reported are: development of analytical capabilities of a submillimeter spectrometer; improved minimum detectibility of laser-induced molecular fluorescence; use of laser photoionization sources for analytical mass spectrometry; photoacoustic spectroscopy of solids; development of time-resolved spectroscopy for multicomponent mixtures; excited-state reactions of Ba/sup +/ + N/sub 2/O ..-->.. BaO +N/sub 2/; development of an ion-cyclotron-resonance spectrometer; development of glow-discharge mul… more

Date: June 24, 1977

Creator: Harrar, J.E. (ed.)

Item Type: Report

Partner: UNT Libraries Government Documents Department

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The EPRI Laboratory experiments at ANL. [Vaporization of core-concrete mixtures]

The vaporization of core-concrete mixtures is being measured using a transpiration method. Mixtures of stainless steel, concrete (limestone or basaltic) and urania (doped with La/sub 2/O/sub 3/, SrO, BaO, and ZrO/sub 2/) are vaporized at 2150 - 2400 K from a zirconia crucible into flowing He - 6% H/sub 2/ gas. Up to 600 ppM H/sub 2/O is added to the gas to fix the partial molar free energy of oxygen in the range -420 kJ to -550 kJ. The fraction of the sample that is vaporized is determined by w… more

Date: October 28, 1987

Creator: Roche, M. F.; Settle, J. L.; Leibowitz, L.; Johnson, C. E. & Ritzman, R. L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Concentration of stable elements in food products

Food samples were taken from commercial markets and analyzed for stable element content. The concentrations of most stable elements (Ag, Al, As, Au, Ba, Br, Ca, Ce, Cl, Co, Cr, Cs, Cu, Fe, Hf, I, K, La, Mg, Mn, Mo, Na, Rb, Sb, Sc, Se, Sr, Ta, Th, Ti, V, Zn, Zr) were determined using multiple-element neutron activation analysis, while the concentrations of other elements (Cd, Hg, Ni, Pb) were determined using atomic absorption. The relevance of the concentrations found are noted in relation to o… more

Date: January 1, 1980

Creator: Montford, M. A.; Shank, K. E.; Hendricks, C. & Oakes, T. W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Potential impacts on aquatic ecosystems from the release of trace elements in geothermal fluids. Environmental Sciences Division publication No. 1097

Analyses of 14 trace elements found in hydrothermal fluids from various geothermal reservoirs in the western United States are presented. The concentrations of these elements, which include As, B, Ba, Br, Cr, Cu, Fe, Hg, Mn, Ni, Pb, Rb, Ti and Zn, vary over orders of magnitude between reservoirs. Potential impacts are conservatively assessed on the basis of toxicity to freshwater biota, and bioaccumulation in food fish to the point where consumption might be hazardous to human health. Trace ele… more

Date: October 1, 1977

Creator: Cushman, R.M.; Hildebrand, S.G. & Brocksen, R.W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Inductively coupled plasma-atomic emission spectrometry (ICP-AES) in support of nuclear waste management. [HHDECMP (hexyl hexyl-N,N diethylcarbamolymethylphosphonate) and n-octyl(phenyl)-N,N diisobutylcarbamoylmethylphosphine oxide]

Simulated complex nuclear waste solutions are characterized by Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AEC). The system uses and ICP source focused on both a polychromator and a computer-controlled scanning monochromator for intensity measurements. This instrumentation allows for simultaneous and sequential measurements of liquid extraction distribution coefficients needed in the development of process flow sheets for component separations. A large number of elements are de… more

Date: January 1, 1984

Creator: Huff, E.A. & Horwitz, E.P.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Hydrogeochemical and stream sediment reconnaissance basic data for Bakersfield quadrangle, California

Field and laboratory data are presented for 1780 sediment samples from the Bakersfield Quadrangle, California. The samples were collected by the Savannah River Laboratory; laboratory analysis and data reporting were performed by the Uranium Resource Evaluation Project at Oak Ridge, Tennessee.

Date: October 1, 1981

Item Type: Report

Partner: UNT Libraries Government Documents Department