[14C]-Pyrene Bound Residue Evaluation Using MIBK Fractionation Method for Creosote-Contaminated Soil
Environmental Science and Technology
The fate of [14C]pyrene was evaluated in creosote-contaminated soil undergoing remediation in a prepared bed system at the Champion International Superfund site in Libby, MT. 14C-bound residue formation was evaluated using the methyl isobutyl ketone (MIBK) humic fractionation procedure, and it increased through 294 days of incubation in biologically active microcosms for humic acid, fulvic acid, bound humic acid, and mineral-associated organic carbon fractions. The relative affinity of the added pyrene and transformation products was highest for the humic acid fraction. Bound residue formation in PAH-contaminated soil was observed to be an important fate mechanism in the prepared bed system and may be an acceptable end point in the remediation of contaminated soil.
Nieman, J. K. C.; Sims, Ronald C.; Sims, J. L.; Sorensen, D. L.; McLean, J. E.; and Rice, J. A., "[14C]-Pyrene Bound Residue Evaluation Using MIBK Fractionation Method for Creosote-Contaminated Soil" (1999). Biological Engineering Faculty Publications. Paper 20.