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… substance PBT Persistent, bioaccumulative and toxic PCB Polychlorinated biphenyl PFAS Poly- and perfluoro alkyl … regrettable substitution has taken place. More than 200 PCB substances have been replaced by thousands of congeners … a sink for long-range transboundary pollutants (LRTAPs). PCB levels are getting lower, but PCBs are still there, and …

… remediate; (c) Releases of toxic substances from burning PCB- containing transformers, electrical and electronic waste …