| Summary: | 碩士 === 國立高雄師範大學 === 生物科學研究所 === 91 === The contamination of soil and aquifers by organic contaminants is a major and widespread problem by leaks, spills and disposal of organic wastes from many sources over a long period of time. Thus, locating and quantifying the NAPL sources of contamination were the first step in aquifer remediation. Partitioning tracer tests have been conducted in various NAPL contaminated sites for initial estimation of NAPL volume and post-remediation performance assessment of various cleanup technologies.
The objective of this study was to evaluate the NAPL saturation o in various column experiments. Three alcohols (methanol, isopropanol, and pentanol) were used as tracers. Polynuclear aromatic hydrocarbons (PAHs) were selected as target compounds. In column test, 200mL of diesel fuels were used to contaminate 1000g of soil and then packed in the column.
The results indicated that low and high concentration levels of tracers and did not illustrate significant difference in term of estimation of NAPL saturation (range from 74% to 86%). In moment analysis, single tracer (pentanol) and the mixed tracer (60% pentanol + 40% methanol) performed better in NAPL quantification. Thus, it is practical to select low concentration level of tracer in field practice. Pentanol is suitable for partitioning tracer test in PAH contaminated sites.
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