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ARS Home » Research » Publications at this Location » Publication #87622
Title: EFFECTS OF SOLVENTS ON DISTRIBUTION AND DEGRADATION XENOBIOTICS IN SOIL

Author
item JOHNSON, TERESA - UNIV OF ILLINOIS
item SIMS, GERALD
item ELLSWORTH, TIMOTHY - UNIV OF ILLINOIS

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 6/12/1997
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Although xenobiotics are often dissolved in solvents to facilitate addition to soils in the laboratory, it is unclear what the effects these solvents have on distribution of xenobiotics within the soil matrix. Five well characterized soils, encompassing a wide range of organic carbon and clay contents, were saturated over a 24-h period in either methanol or ethyl acetate; both containing 14C-labeled 2,4-D. The solvents were then removed from the soils by evaporation. Desorption isotherms were conducted on each soil. Four of the five soils demonstrated different desorption kinetics depending on the solvent used to apply the 2,4-D, the exception being soils low in both clay and organic C. Additional studies revealed that spiking solvents affected degradation rates in soils, as a result of combined effects of toxicity and bioavailability of 2,4-D.