Determination of the Rate of Evaporation of Ethyl Acetate and the Rate of Formation of Acetic Acid by Altering the Acid Saturation of UK Sand
Herman, Michael D.
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The release of numerous cytotoxic agents or nerve agents, such as hydrocarbons, pesticides, and chemical warfare agents into soil, concrete, brick, asphalt and subsurface poses a great threat to the environment. The deposited droplet of these agents or chemicals contained within are capable of chemically reacting with the porous subsurface to create new harmful products. The quantification and extent of the spread of these chemicals has primary importance for carrying out human and environmental remediation. In the present study, the rate of evaporation of ethyl acetate and the rate of formation of acetic acid in UK sand was measured by three methods: headspace solvent micro extraction technique, gravimetric mass loss analysis, and liquid extraction. It was concluded that the saturation with acid does not affect the vapor diffusion trend of the injected liquid but has a large effect on the rate of formation of acetic acid in UK sand. Analysis of0% saturated UK sand with HC1 solution after a time interval of 15 minutes, the headspace solvent micro extraction, gravimetric mass loss analysis, and liquid extraction techniques accounted for 81.1% of the injected ethyl acetate.