PMID- 12487413 OWN - NLM STAT- MEDLINE DCOM- 20030314 LR - 20191106 IS - 0169-7722 (Print) IS - 0169-7722 (Linking) VI - 59 IP - 3-4 DP - 2002 Dec TI - Controlled release, blind tests of DNAPL characterization using partitioning tracers. PG - 187-210 AB - The partitioning tracer technique for dense nonaqueous phase liquid (DNAPL) characterization was evaluated in an isolated test cell, in which controlled releases of perchloroethylene (PCE) had occurred. Four partitioning tracer tests were conducted, two using an inverted, double five-spot pumping pattern, and two using vertical circulation wells. Two of the four tests were conducted prior to remedial activities, and two were conducted after. Each test was conducted as a "blind test" where researchers conducting the partitioning tracer tests had no knowledge of the volume, method of release, nor resulting spatial distribution of DNAPL. Multiple partitioning tracers were used in each test, and the DNAPL volume estimates varied significantly within each test based on the different partitioning tracers. The tracers with large partitioning coefficients generally predicted a smaller volume of PCE than that expected based on the actual release volume. However, these predictions were made for low DNAPL saturations (average saturation was approximately 0.003), under conditions near the limits of the method's application. Furthermore, there were several factors that may have hindered prediction accuracy, including tracer degradation and remedial fluid interference. FAU - Brooks, Michael C AU - Brooks MC AD - Interdisciplinary Program in Hydrologic Sciences, University of Florida, 217 Black Hall, Gainesville, FL 32611-6450, USA. FAU - Annable, Michael D AU - Annable MD FAU - Rao, P Suresh C AU - Rao PS FAU - Hatfield, Kirk AU - Hatfield K FAU - Jawitz, James W AU - Jawitz JW FAU - Wise, William R AU - Wise WR FAU - Wood, A Lynn AU - Wood AL FAU - Enfield, Carl G AU - Enfield CG LA - eng PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. PL - Netherlands TA - J Contam Hydrol JT - Journal of contaminant hydrology JID - 8805644 RN - 0 (Alcohols) RN - 0 (Soil) RN - 0 (Water Pollutants, Chemical) RN - TJ904HH8SN (Tetrachloroethylene) SB - IM MH - Alcohols/chemistry MH - *Environmental Pollution MH - Fresh Water MH - Soil MH - Tetrachloroethylene/*chemistry MH - *Water Pollutants, Chemical EDAT- 2002/12/19 04:00 MHDA- 2003/03/15 04:00 CRDT- 2002/12/19 04:00 PHST- 2002/12/19 04:00 [pubmed] PHST- 2003/03/15 04:00 [medline] PHST- 2002/12/19 04:00 [entrez] AID - S0169-7722(02)00057-8 [pii] AID - 10.1016/s0169-7722(02)00057-8 [doi] PST - ppublish SO - J Contam Hydrol. 2002 Dec;59(3-4):187-210. doi: 10.1016/s0169-7722(02)00057-8.