inside some houses in the U.S.

Volatilization of PCBs in soil was thought to be the primary source of PCBs in the atmosphere, but research suggests ventilation of PCB-contaminated indoor air from buildings is the primary source of PCB contamination in the atmosphere.

Biosphere

In the biosphere, PCBs can be degraded by the sun, bacteria or eukaryotes, but the speed of the reaction depends

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