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Atrazine, terbutryn and GS-14254 adsorption, desorption and solubility in salt solutions and movement in soil materials

Creator:: Gaynor, John Donald
Resource Type:: Dissertation
Full Text:: SOIL SCIENCE presented on (Major) Title: ATRAZINE, TERBUTRYN AND GS-14254 ADSORPTION, DESORPTION AND

Diffusion and surface reaction processes of absorption on surfaces of soil particles in unsaturated soils

Creator:: Yingjajaval, Suntaree
Abstract:: At present the adsorption kinetic of ions by soil particles is considered to be a surface reaction. When the transport of solutes in soils is described using the one-dimensional flow equation, it becomes a serious problem that lateral diffusion of ions from the bulk solution towards the soil surfaces is...
Resource Type:: Dissertation
Full Text:: procedure for measurement of adsorption isotherms was proposed and tested. The new procedure employs a soil

Adsorption of Cu(II) and Cd(II) by Na-montmorillonite at low surface coverage in the presence and absence of water soluble complexing organic ligands

Creator:: Inskeep, William Parks
Abstract:: The formation of solution and solid complexes with heavy metals will partially determine their mobility and plant availability in soil systems. Experiments were initiated to determine the effect of pH, adsorbent and initial metal concentrations, and the presence of water soluble ligands on the adsorption of Cd and Cu by...
Resource Type:: Masters Thesis
Full Text:: ), Chicago sludge (CSE), and an agricultural peat soil (PE). 47 Appendix B 71 ADSORPTION OF Cu(II) AND Cd

Fluoride sorption and dissolution reactions in soils

Creator:: Peek, Daniel C.
Abstract:: The reaction of F, often a component of industrial wastes and phosphatic fertilizers, with soil was studied with regard to sorption reactions and resultant changes in solution composition. Sodium fluoride solutions (0.0 to 2.5 mmol/L F) were equilibrated with ten soils for 24h. The soil extract solutions were analyzed for...
Resource Type:: Masters Thesis
Full Text:: determined by atomic absorption after extraction from soil with 0.2 mol/L ammonium oxalate (pH 3.5), and

Effects of organic and inorganic soil amendments of phosphorus sorption

Creator:: Iyamuremye, Faustin
Resource Type:: Dissertation
Full Text:: ), adsorption maxima (b), and P sorbed at 0.2 mg P L-1 in Jory soil samples treated with increasing rates of

A soil property model for evaluating pesticide movement potential

Creator:: Vogue, Margaret A.
Abstract:: Prevention of groundwater contamination by agricultural chemicals requires an understanding of the complex processes that control pesticide movement below the soil surface. Through this understanding it is possible to try to predict which areas may be most vulnerable to contamination. The many models that have been developed to characterize pesticide...
Resource Type:: Masters Thesis
Full Text:: ) water. And finally, adsorption is a function of the pesticide and the soil environment. Of the above

Relationship between pore size, particle size, aggregate size and water characteristics

Creator:: Wu, Laosheng
Abstract:: Soil pore size distribution and water characteristics are important for water storage, water movement, and soil-plant interaction studies. Laboratory determinations of water characteristics and pore size distribution are time consuming and costly. Investigators have proposed many models to predict them from routinely available data. Most of the models are related...
Resource Type:: Masters Thesis
Full Text:: China and the Department of Soil Science at Oregon State University for their financial support during

Stability of soil structure for water movement in an aridisol

Creator:: Ali, Safdar
Abstract:: Lack of stability of soil aggregates for water movement is a major problem in arid soils due to low organic matter and higher sodium contents. Soil amendments for improving stability of structure and increasing infiltration of water are essential to solve water management problems in these areas. Different rates of...
Resource Type:: Masters Thesis
Full Text:: movement is a major problem in arid soils due to low organic matter and higher sodium contents. Soil

Surface complexation of protons and sulfate by kaolinite

Creator:: Wildensee, Frank
Abstract:: The emission of sulfur oxides from anthropogenic sources represents a potential threat to terrestrial ecosystems. Sulfate, the most highly oxidized form of sulfur, is the most common form of inorganic sulfur in most soil environments. The sorption of sulfate may influence the alkalinity of the soil solution and as a...
Resource Type:: Masters Thesis
Full Text:: . Soil Sci. Soc. Am. J. 41:686-691. Aylmore, L. A., M. Karim, and J. P. Quirk. 1967. Adsorption and

Persistence of aromatic compounds in soils and sediments : a molecular perspective

Creator:: Keiluweit, Marco
Abstract:: This thesis explores open questions regarding molecular forms and interactions of natural and synthetic aromatic compounds present in soils and sediments. Plant biomass-derived black carbon (biochar) generated through incomplete natural and anthropogenic combustion processes is a major source of aromaticity in terrestrial ecosystems. Chapter one represents a detailed account of...
Resource Type:: Masters Thesis
Full Text:: Professor, representing Soil Science Head of the Department of Crop and Soil Science Dean of the

ScholarsArchive@OSU

Atrazine, terbutryn and GS-14254 adsorption, desorption and solubility in salt solutions and movement in soil materials

Diffusion and surface reaction processes of absorption on surfaces of soil particles in unsaturated soils

Adsorption of Cu(II) and Cd(II) by Na-montmorillonite at low surface coverage in the presence and absence of water soluble complexing organic ligands

Fluoride sorption and dissolution reactions in soils

Effects of organic and inorganic soil amendments of phosphorus sorption

A soil property model for evaluating pesticide movement potential

Relationship between pore size, particle size, aggregate size and water characteristics

Stability of soil structure for water movement in an aridisol

Surface complexation of protons and sulfate by kaolinite

Persistence of aromatic compounds in soils and sediments : a molecular perspective

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