great lakes moment chemical contaminant in st lawrence river herring gull eggs traced to detroit river
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Great Lakes Moment: Chemical contaminant in St. Lawrence River herring gull eggs traced to Detroit River

Great Lakes Moment is a monthly column written by Great Lakes Now Contributor John Hartig. Publishing the author’s views and assertions does not represent endorsement by Great Lakes Now or Detroit Public Television.

A class of chemical compounds that are no longer produced in significant quantities nor being used in the manufacture of new products, called polychlorinated naphthalenes, or PCNs, has been found in herring gull eggs in the St.

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