... His landmark treatise, A Color Notation, was published in 1905. ... Munsell remained on the f... more ... His landmark treatise, A Color Notation, was published in 1905. ... Munsell remained on the faculty until 1915, specializing in artistic anatomy and color composition. ... Munsell had an early love of the sea and spent much of his childhood free time on ships and tugboats in Boston ...
The sorption of226Ra from oil-production brine by soils and sediments was investigated. Sorption ... more The sorption of226Ra from oil-production brine by soils and sediments was investigated. Sorption was rapid, and the percentage sorbed increased with brine dilution. Greatest removals of226Ra from sediments in the laboratory occurred with alkaline DTPA, HCl, and BaCl2, with lesser removals using CaCl2 and NaCl solutions. Digestion of sediments with NaOCl indicates that most of the native and sorbed226Ra is associated with the mineral rather than organic fraction of the sediments. Correlation analysis based on 14 soils indicates that the retention of226Ra may involve precipitation reactions associated with sulfate-bearing minerals, as well as ion-exchange reactions with the clay mineral fractions of surficial earth materials.
Five surface soils from southeastern Montana were studied to determine the influence of autoclavi... more Five surface soils from southeastern Montana were studied to determine the influence of autoclaving, metabolic substrate additions, soil moisture status, and soil temperature on the volatilization of mercury from soils amended with methylmercury. Soils were amended to 1.0 part per million of mercury as ²°³Hg-CHâHgCl, and the mercury content was monitored for two months by gamma spectrometry. Mercury losses were
Five surface soils from southeastern Montana were studied to determine the effects of autoclaving... more Five surface soils from southeastern Montana were studied to determine the effects of autoclaving and glucose additions on the volatile loss of applied divalent inorganic mercury. Soils were amended to 1 ppM Hg as ²°³Hg-Hg(NOâ)â, maintained at room temperature near the 1/3-bar moisture content, and Hg content monitored for 7 weeks. Mercury losses from soils receiving neither autoclaving nor glucose
Soil samples were collected from former radium processing sites in Denver, CO, and East Orange, N... more Soil samples were collected from former radium processing sites in Denver, CO, and East Orange, NJ. Particle-size separations and radiochemical analyses of selected samples showed that while the greatest contents of both 226Ra and U were generally found in the finest (less than 45 micron) fraction, the pattern was not always of progressive increase in radionuclide content with decreasing particle size. Leaching tests on these samples showed a large portion of the 226Ra and U to be soluble in dilute hydrochloric acid. Radon-emanation coefficients measured for bulk samples of contaminated soil were about 20%. Recovery of residual uranium and vanadium, as an adjunct to any remedial action program, appears unlikely due to economic considerations.
Numbers and types of microorganisms in uranium mill tailings were determined using culturing tech... more Numbers and types of microorganisms in uranium mill tailings were determined using culturing techniques.Arthrobacter were found to be the predominant microorganism inhabiting the sandy tailings, whereasBacillus and fungi predominated in the slime tailings. Sulfate-reducing bacteria, capable of leaching radium, were isolated in low numbers from tailings samples but were isolated in significantly high numbers from topsoil in contact with the tailings. The results are placed in the context of the magnitude of uranium mill tailings in the United States, the hazards posed by the tailings, and how such hazards could be enhanced or diminished by microbial activities. Patterns in the composition of the microbial population are evaluated with respect to the ecological variables that influence microbial growth.
... His landmark treatise, A Color Notation, was published in 1905. ... Munsell remained on the f... more ... His landmark treatise, A Color Notation, was published in 1905. ... Munsell remained on the faculty until 1915, specializing in artistic anatomy and color composition. ... Munsell had an early love of the sea and spent much of his childhood free time on ships and tugboats in Boston ...
The sorption of226Ra from oil-production brine by soils and sediments was investigated. Sorption ... more The sorption of226Ra from oil-production brine by soils and sediments was investigated. Sorption was rapid, and the percentage sorbed increased with brine dilution. Greatest removals of226Ra from sediments in the laboratory occurred with alkaline DTPA, HCl, and BaCl2, with lesser removals using CaCl2 and NaCl solutions. Digestion of sediments with NaOCl indicates that most of the native and sorbed226Ra is associated with the mineral rather than organic fraction of the sediments. Correlation analysis based on 14 soils indicates that the retention of226Ra may involve precipitation reactions associated with sulfate-bearing minerals, as well as ion-exchange reactions with the clay mineral fractions of surficial earth materials.
Five surface soils from southeastern Montana were studied to determine the influence of autoclavi... more Five surface soils from southeastern Montana were studied to determine the influence of autoclaving, metabolic substrate additions, soil moisture status, and soil temperature on the volatilization of mercury from soils amended with methylmercury. Soils were amended to 1.0 part per million of mercury as ²°³Hg-CHâHgCl, and the mercury content was monitored for two months by gamma spectrometry. Mercury losses were
Five surface soils from southeastern Montana were studied to determine the effects of autoclaving... more Five surface soils from southeastern Montana were studied to determine the effects of autoclaving and glucose additions on the volatile loss of applied divalent inorganic mercury. Soils were amended to 1 ppM Hg as ²°³Hg-Hg(NOâ)â, maintained at room temperature near the 1/3-bar moisture content, and Hg content monitored for 7 weeks. Mercury losses from soils receiving neither autoclaving nor glucose
Soil samples were collected from former radium processing sites in Denver, CO, and East Orange, N... more Soil samples were collected from former radium processing sites in Denver, CO, and East Orange, NJ. Particle-size separations and radiochemical analyses of selected samples showed that while the greatest contents of both 226Ra and U were generally found in the finest (less than 45 micron) fraction, the pattern was not always of progressive increase in radionuclide content with decreasing particle size. Leaching tests on these samples showed a large portion of the 226Ra and U to be soluble in dilute hydrochloric acid. Radon-emanation coefficients measured for bulk samples of contaminated soil were about 20%. Recovery of residual uranium and vanadium, as an adjunct to any remedial action program, appears unlikely due to economic considerations.
Numbers and types of microorganisms in uranium mill tailings were determined using culturing tech... more Numbers and types of microorganisms in uranium mill tailings were determined using culturing techniques.Arthrobacter were found to be the predominant microorganism inhabiting the sandy tailings, whereasBacillus and fungi predominated in the slime tailings. Sulfate-reducing bacteria, capable of leaching radium, were isolated in low numbers from tailings samples but were isolated in significantly high numbers from topsoil in contact with the tailings. The results are placed in the context of the magnitude of uranium mill tailings in the United States, the hazards posed by the tailings, and how such hazards could be enhanced or diminished by microbial activities. Patterns in the composition of the microbial population are evaluated with respect to the ecological variables that influence microbial growth.
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