폐변압기 절연유 중 PCBs 분석을 위한 전처리 방법 비교
Comparison of Pretreatment Methods for the Analysis of PCBs in Transformer Oil
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
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.
Abstract
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.
참고문헌 (12)
- 폐기물관리법, "환경부", ~ (2004)
- 폐기물공정시험방법, "환경부", ~ (2004)
- 폐기물 중 폴리염화비페닐류(PCBs) 함유량측정 분석 매뉴얼, "국립환경과학원", ~ (2005)
- "US EPA Method 8082A, Polychlorinated biphenyls(PCBs) by GC, November 2000", ~
- "US EPA Method 1668, “Chlorinated Biphenyl Congeners in Water, Soil, Sediment, and Tissue by HRGC", HRMS”, Revision A, December 1999
- 폐유 중 폴리염화비페닐(PCBs)의 HRGC, "MS법에 의한 표준측정법", 일본 후생성, 1998, 고시 222호
- Insulation liquids-Contamination by polychlorinated biphenyls (PCBs)-method determination by capillary column gas chromatography, "DIN", ~, pp.EN 61619 (1997)
- S. K. Shin, "Levels of polychlorinated biphenyls(PCBs) in transformer oils from Korea", Journal of Hazardous Materials, B137, pp.1514~1522 (2006)
- M. Takada, "A new rapid method for quantification of PCBs in transformer oil", Chemosphere, 43, pp.455~459 (2001)
- T. Takasuga, "Isotope dilution analysis of polychlorianted biphenyls (PCBs) in transformer oil and global commercial PCB formulations by high resolution gas chromatography-high resolution mass spectrometry", Chemosphere, 62, pp.469~484 (2006)
- Y. C. Na, "Determination of polychlorinated biphenyls in transformer oil using various adsorbents for solid phase extraction", Chemosphere, 73, pp.S7~S12 (2008)
- A. Beyer, "Applications of sample preparation techniques in the analysis of pesticides and PCBs in food", Food Chemistry, 108, pp.669~680 (2008)