Among Canadian freshwater fish, toxaphene
is a significant contaminant.
The other organic pollutants subject to control are DDT, aldrin, chlordane, dieldrin, endrin, heptachlor, mirex, hexachlorobenzene and toxaphene
Certain harmful chemicals are particularly likely to follow this route, including PCBs, hexachlorocyclohexane, toxaphene
, and chlordane.
In the past, farmers have used toxic chemicals such as calcium arsenate, Paris green, dichlorodiphenyltrichloroethane (DDT), and toxaphene
to rid their cotton crops of insects.
Blubber of animals from these stocks contained polychlorinated biphenyl (PCB) congeners, DDT, chlordane compounds, hexachlorobenzene (HCB), dieldrin, mirex, toxaphene
, and hexachlorocyclohexame (HCH).
It was not known in 1947 that the insecticide toxaphene
, which was being introduced, would become the most heavily used insecticide in U.
The 12 pollutants to be covered by the treaty are the pesticides aldrin, chlorodane, DDT, dieldrin, endrin, heptachlor, mirex, and toxaphene
, the industrial chemicals hexachlorobenzene and polychlorinated biphenyls (PCBs), and dioxins and furans, which are unwanted byproducts of combustion and industrial processes.
If heavily infested, shear and treat entire flock with Co-Ral, Delnav, malathion, Korlan or toxaphene
Chemical analyses of their blubber have detected PCBs, DDT, chlordane and toxaphene
-- at some of the highest levels over recorded in a living organism.
, in particular, is a pesticide likely to mimic the behaviour of HCH.
The study centered on endosulfan, dieldrin, toxaphene
and chlordane, all pesticide chemicals that are known to turn on a gene that makes estrogen in animals.
These were Aldrin, Chlordane, DDT, Dieldrin, Endrin, Heptachlor, Hexachlorobenzene, Mirex, Toxaphene
, Dioxins, Furans and PCBs.