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Formation of polychlorobiphenyls in silicone rubber |
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| Authors: | A Perdih J Jan |
| Institution: | 1 Department of Chemistry and Chemical Technology, University of Ljubljana, 61001, Ljubljana, P.O.B. 537, Slovenia 2 Public Health Institute of Slovenia, Trubarjeva 2, 61001, Ljubljana, Slovenia |
| Abstract: | In silicone rubber crosslinked with bis(2,4-dichlorobenzoyl) peroxide (DCBP) as initiator about 0.1% of DCBP is converted into polychlorobiphenyls (PCBs). The PCB content in silicone rubber determined by high resolution gas chromatography (HRGC) after its destruction by HF is around 10 mg/kg. 29 PCB congeners were detected. Instead of the expected PCB-47, lower chlorinated congeners are predominant. Some possible pathways of their origin are presented. |
| Keywords: | Polychlorobiphenyls bis(2 4-dichlorobenzoyl) peroxide silicone rubber |
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