Arctic Pollutants Come From U.S., Mexico

Of the 23 classes of dioxin sources identified in the study, only six accounted for 90 percent of all dioxin emissions in North America, the report’s summary stated. Those were municipal solid waste incinerators, backyard trash burning, cement kilns burning hazardous waste, medical waste incinerators, secondary copper smelters and iron sintering plants.

The report said of 44,000 emission sources identified in North America as causing pollution in Nunavut, the United States accounted for 62 percent, Mexico accounted for 30 percent and Canada for 8 percent. Dioxin sources within Nunavut accounted for less than 0.02 percent of the total.

The study said an estimated two to 20 percent of dioxin pollution in Nunavut areas originated outside North America, mainly in Japan, France, Belgium and Britain.

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