Liquid Chromatography Applications to Determination of Sorption on Aquifer Materials
Final rept. Oct 1986-Oct 1988
AIR FORCE ENGINEERING AND SERVICES CENTER TYNDALL AFB FL ENGINEERING AND SERVICES LAB
Pagination or Media Count:
Sorption coefficients of 1-methylnaphthalene and 1,2-dichlorobenzene in aqueous solution were measured on six aquifer materials by column chromatography using frontal analysis. Results were compared with sorption coefficients for the same systems determined by the batch method. Column values did not exceed batch values, and were generally near 0.5 times the batch values. The order of sorption coefficients on the aquifer materials was the same for both methods. Possible reasons for this disagreement and limitations of column methods with aquifer material packing are discussed. It is suggested that column methods of sorption coefficient determination have several disadvantages and that batch methods should be preferred. Transport equations in aquifers for sorbates with non-linear isotherms have been developed. A field test of effects of non-linear sorption behavior on sorbate plume shape and extent is proposed.
- Physical Chemistry
- Water Pollution and Control