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KMID : 0385520080210030201
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Analytical Science & Technology
2008 Volume.21 No. 3 p.201 ~ p.211
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Determination of byproducts after treatment in PCBs-containing transformer oils
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Shin Sun-Kyoung
Park Jin-Soo
Kang Young-Yeul
Hwang Seung-Ryul
Kim Young-Sik
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Abstract
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The treatment efficiency of PCBs containing wastes has been investigated. The samples treated by electron beam and de-chlorination method were analyzed to verify the byproducts before treatment and after treatment. In the treated samples by electron beam irradiation, PCBs were not detected by comparing the peak matching using the Korean official waste test method. On the other hand, PCBs congeners were detected by analyzing individual isotope method using HRGC/HRMS. Most of PCB congeners in waste were decomposed to 3-chlorobiphenyls, lower chlorinated congener produced during the treatment of electron beam. In the chemical dechlorination treatment, it was found that the concentrations of PCBs in treated samples were lower than those of regulation criteria in Waste & POPs management law and the after treatment concentration were satisfied to the regulation criteria. Also, dioxins were not observed after the physio-chemical treatment processes of PCBs containing wastes.
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KEYWORD
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PCBs, transformer oil, dechlorination, the degradation products
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