Accession Number : ADA330055

Title :   Explosives Conjugation Products in Remediation Matrices: Interim Report

Descriptive Note : Final rept.

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS

Personal Author(s) : Pennington, J. C. ; Honeycutt, M. E. ; Jarvis, A. S. ; McFarland, V. A. ; Gunnison, D.

PDF Url : ADA330055

Report Date : AUG 1997

Pagination or Media Count : 156

Abstract : During investigations of potential treatment technologies for explosives-contaminated soils, 2,4,6-trinitrotoluene (TNT) has been observed to interact with some component of the matrix in such a way as to preclude extraction with organic solvents. Mass balance studies using radiolabeled TNT reveal that as much as 80 percent of the radioactivity added to tests is still present in the matrix. Therefore, the explosive has been changed to a more complex form. The long-term stability and environmental safety of these uncharacterized conjugates are unknown. Therefore, the objectives of this study were to characterize the conjugates, develop analytical methods for their identification, and determine their potential long-term stability and environmental safety. The approach includes development of hydrolytic methods for releasing identifiable explosives-related products from conjugated matrices, formation of conjugates by covalent linkage with humic acid functional groups using nuclear magnetic resonance, dialysis partitioning of explosives and transformation products with humic acid, surface plasmon resonance as a tool for assessing the interaction with humic acid, microbial degradability of conjugated products, and toxicology of explosives transformation and conjugated products. Results to date indicate that conjugates result from several processes occurring in the matrix. Some of these processes are potentially reversible, while others are more stable.

Descriptors :   *TNT, *SOIL REMEDIATION, NUCLEAR MAGNETIC RESONANCE, EXPLOSIVES, SOIL POLLUTION, HYDROLYSIS, ANALYTICAL CHEMISTRY, RADIOACTIVE ISOTOPES, TOXICOLOGY, DIALYSIS.

Subject Categories : Industrial Chemistry and Chemical Processing
      Solid Wastes Pollution and Control
      Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE