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Ridding the world of POPs - A guide to the Stockholm Convention on POPs
… and industrial processes. While the risk level varies from POP to POP, by definition all of these chemicals share four … oil in Japan in 1968 and Taiwan in 1979. PCBs are also unintentional by- products of combustion and industrial … covers two families of chemicals which are solely unintentional by- products: polychlorinated dioxins and …