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CH3041
PCBs III
• Production stopped in developed countries in 1970s after 1.2 x 106 tons
had been made. Australia used 300 t/y 1975.
• PCBs are not particularly toxic (chloracne) but there have been some big accidents.
• In Melbourne: a recreational lake is still out of bounds for fishing due to a spill in 1975.
• In Japan: 1968 the Yusho Oil incident where PCB oil got mixed in with rice oil.
It poisoned 1000 people and resulted in a high incidence of liver cancer.