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자료유형
학술저널
저자정보
저널정보
한국환경분석학회 환경분석과 독성보건 한국환경분석학회지 제19권 제3호
발행연도
2016.1
수록면
182 - 191 (10page)

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Siloxanes are volatile silicon compounds found in biogas that need to be removed in the process of utilizing biogas as an energy source. Therefore, optimal detection of siloxanes in biogas is essential. In this study, two different configurations of a direct sampling method using methanol for solvent absorption are compared. The two configurations are on-site and off-site direct sampling. The on-site direct sampling involves trapping gas directly from the biogas source in impingers filled with methanol, and the off-site method involves absorbing gas in impingers from gas bags filled with biogas previously sampled and homogenized under controlled temperature and pressure conditions. The absorption methodology used is originally from Air Toxics Ltd. and ESS Laboratories. A change in flow rate was considered in order to keep the same composition of biogas throughout multiple sampling events. Also, GC/MS and ESTD methods were applied. To minimize instrumental errors, different GC capillary columns were tested to find the optimal GC/MS conditions. Polysiloxane-coated columns (HP-1MS, HP-5MS) showed better peak separation and quantification when compared to a polyethylene glycol-coated column (HP-INNOwax). Finally, the two sampling configurations were statistically compared and it was determined that there are no significant differences in detection results between them.

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