폐 변압기 절연유 및 자동차 엔진 폐윤활유 중의 다이옥신 관련 화합물의 함유특성

Abstract

This study was conducted to evaluate componential characteristic of Dioxins(Polychlorinated dibenzo-p-dioxins, Polychlorinated dibenzofurans and Dioxin-like polychlorinated biphenyls) in insulating oil of waste transformer and waste engine oil of automobile using HRGC/HRMS. The concentrations of PCDD/DFs and DL-PCBs in the insulating oil of waste transformer ranged from 12.18 to 13.11 pg WHO-TEQ/g, 119.77 to 216.05 pg WHO-TEQ/g, respectively. The highest concentration isomer among congeners of DL-PCBs and PCDD/DFs were PCB-118 and 2,3,4,7,8-PeCDF. Homologue profile patterns of DL-PCBs, and concentrations or WHO-TEQ concentrations for each congeners of DL-PCBs showed a similar distribution. And each homologue concentration of DL-PCBs was highly correlated with WHO-TEQ concentration. Moreover the concentrations of PCDD/DFs and DL-PCBs in the waste engine oil of automobile showed 12.11 fg WHO-TEQ/g and 7.41 fg WHO-TEQ/g, respectively. The highest concentration among congeners of DL-PCBs and PCDD/DFs were PCB-118 and 1,2,3,4,6,7,8-HpCDF. Homologue profile pattern of waste engine oil was slightly different from insulating oil. The DL-PCBs concentrations of waste engine oil in diesel, gasoline and LPG were 2.68, 8.97 and 5.84 pg WHO-TEQ/g, respectively. And the PCDD/DFs concentrations of waste engine oil in diesel, gasoline and LPG were 0.55, 2.04 and 1.13 pg WHO-TEQ/g respectively. The distribution of isomers of PCDD/DFs showed patterns that high chlorinated dioxins and furans were dominant congeners. On the contrary, low chlorinated dioxins and furans were not detected.