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자료유형
학술저널
저자정보
저널정보
한국환경분석학회 환경분석과 독성보건 한국환경분석학회지 제13권 제3호
발행연도
2010.1
수록면
173 - 179 (7page)

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Transformer oil is usually a highly-refined mineral oil that is stable at high temperatures and has an excellent electrical insulating property. Polychlorinated biphenyls(PCBs) had been widely used as transformer oil before the use of PCBs was banned throughout world in 1970s. Therefore PCBs is not used as transformer oil or insulating oil any more, but sometimes they have been found in transformer oil. It is difficult to separate and quantify PCBs in transformer oil because chemo-physical characteristics between PCBs and transformer oil are very similar. Lately, various solid phase extraction(SPE) methods are adopted for rapid and simple separation of PCBs but it is still hard to perfectly extract PCBs from transformer oil and loss during this extraction/cleanup process can cause a recovery problem. The aim of this study is to find an easy method for PCBs determination in transformer oil and to verify its efficiency. We applied various pretreatment methods to extract PCBs determination in transformer oil and compared with their efficiencies: laborious treatment including sulfur treatment,multilayer silica gel column and so forth, SPE method and simple treatment such as just dilution of transformer oil. For the majority of transformer oils with few impurities, large differences of PCBs between methods could not be found.

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