Fate of 2-4 and 2-6 Dinitrotolune in a Soil Ecosystem.
(4676)
Authors:
A.L. Allen* - University of Maryland Eastern Shore, MD F.M. Hashem - University of Maryland Eastern Shore, MD R.B. Dadson - University of Maryland Eastern Shore, MD I. Javaid - University of Maryland Eastern Shore, MD
Abstract:
Trinitrotoluene (TNT) and its derivatives 2, 4 dinitrotoluene (2, 4 DNT) and 2, 4, 6 DNT are toxic organic compounds widespread in the environment as a result of runoff, industrial wastes sites, and military testing sites. Thus, these compounds are significant environmental pollutants of considerable concern. This study will
investigate the fate of two of TNT’s metabolites, 2, 4 DNT and 2, 4, 6 DNT in self-contained undisturbed soil lysimeters on the Eastern Shore of Maryland using an Othello soil. This soil was chosen because it is representative of soils used at military testing sites for these compounds. The Experiment was arranged in a randomized complete block design with eight treatments and three replications at depths of 30 and 60 cm. Soils were thoroughly mixed with 0, 25 and 50 µg of each of 2, 4 DNT and 2, 4, 6 DNT, and transferred to lysimeters. Soil cores samples were collected at 0-10, 10-20 and 20-30, 30-40 and 40-60 cm after 0, 30, 60, 120 and 180 days. Leachates were collected after the same timeframe as soil cores. Soil cores and leachates have been analyzed for nitrate-N, nitrite-N, and pH. Soil cores and leachates will be analyzed for 2, 4 DNT and 2, 4, 6 DNT and their metabolites using USEPA approved methods and a GLC-Mass Spectrometer Model-6890. This study will provide pertinent information relative to the fate of these compounds in soil ecosystems.
Speaker Information: Arthur Allen, University of Maryland Eastern Shore, MD, Department of Agriculture, University of Maryland Eastern Shore, Princess Anne, MD 21853; Phone: (410)651-6624; E-mail: [email protected]
Session Information: Wednesday, November 3, 2004, 9:00 AM-11:00 AM Presentation Start: 9:00 AM (Poster Board Number: 2819)
Keywords: DNT; TNT; lysimeters; bioremediation
