Abstract
AbstractA technique was developed to analyze three beta‐emitter isotopes (45Ca, 36Cl and 3H2O) in a sample, using a two channel liquid scintillation spectrometer. This technique was further successfully used to analyze the concentration of these isotopes in the effluent during miscible displacement studies through columns packed with an Oxisol soil. The isotopic triple labeling approach was used to investigate the effects of physical and chemical properties of the porous medium during solute transport. Tritium was used to study the effects of the physical properties of the porous medium (aggregate size and flux), while 45Ca (a cation) and 36Cl (an anion) were used to study the effects of the chemical properties (solution pH and concentration) of the same porous medium. This is a promising approach to determine how the physical and chemical properties of a soil interact to influence solute transport.
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