Mercury

Transport and transfomation of
PCBs in the environment
• Since the production of PCBs, it is estimated that over half of
the related products have entered the gabbage dumps. The
combustion of such kinds of gabbage release PCBs to the
atmosphere.
• For the difference in climatic, biological, hydrographical and
geological factors, etc. , the PCBs in the environment
undergo a series of transport and transformation. PCBs are
finally stored up mainly in soil, rivers and the bottom soil
along the water bodies.
• PCBs is water-insoluble and have high octanol-water
partition coefficient, thus are more easily distributed among
settled organic matters and soluble organic matters.