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제108회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Solvent Extraction of Residual Total Petroleum Hydrocarbons from the Contaminated Soil after Remediation Treatments

2011년 8월 5일 15시 39분 52초
Ⅳ-ANAL.P-229 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
금 <발표Ⅳ>
저자 및
배선영, 이혜영, 방예진
서울여자대학교 화학과, Korea
Oxidation technique has been used to remediate the organic compounds from the contaminated soils with petroleum hydrocarbons due to its high oxidation capacity. The oxidation combined with thermal treatment has been studied. However, the residual organic compounds have potential to contaminate the other media. In this study, the detection of residual organic compounds in soil was performed using solvent extraction. To optimize the solvent extraction, sonication and shaking methods were investigated on the spiked soil with 20 ppm TPH (Total petroleum hydrocarbons). It was treated with various solvents including methanol, acetone, methylene chloride and the mixture of acetone and methylene chloride (1:1). The extraction time was varied in range from 5 min to 30 min. The residual TPH after solvent extraction was analyzed by GC-FID (Hewlett-Packard, 5890 II) with a capillary column (Ultra-2, 25 m × 0.20 mm × 0.33 μm). The temperature programming was used at 45 oC for 2 min increased at the rate of 10 oC/min to 310 oC for 25 min and the injector temperature was 280 oC. The soil was consisted of sand (54.55%), silt (31.83%), and clay (0.03%). From the results, sonication method provided the better detection of residual THP in soil than shaking method. The optimum extraction time of sonication using acetone mixed with methylene chloride was 25 min. Then, thermal treatment of TPH removal was performed at 60, 70, and 80 oC.