Fate of N,N-Bis-(2,4,6-Trichlorophenyl)-Urea in a Freshwater Sediment
Final rept. May-Oct 1988
PACIFIC NORTHWEST LABS RICHLAND WA
Pagination or Media Count:
A primary purpose of this study was to determine whether CC-2 was transformed in sediment to the known environmental hazard 2,4,6-trichloroaniline TCA. Another purpose of this work was to confirm the previously determined water solubility, and hence, the estimated Kmw value. Previous studies failed to address the possibility of microbial transformation of CC-2 to TCA, or were confounded by the formation of TCA as an artifact formed by gas-chromatographic analysis. The first task was to analyze sediments from Canal Creek for CC-2 and TCA. Soxhlet and ultrasonic extraction techniques were employed followed by analysis by HPLC. Secondly, the susceptibility of CC-2 towards microbial degradation was assessed by examining experimental sediments spiked with two concentrations of CC-2. Analyses for CC-2, TCA, and other possible transformation products were conducted over a 2-month period. The third objective was to determine the water solubility of CC-2 over a range of environmental relevant temperatures. The results of this study reinforce the perception that CC-2 is environmentally immobile and resistant of both chemicals and biological alteration.
- Protective Equipment