Trace Metals and Nutrients

Power plants release sulfur, present in coal, to the atmosphere and oxides of nitrogen are generated upon combustion with air. Additionally, trace elements found in coal are released to the atmosphere in elemental form or sorbed to fly ash particles. Elements and small particles may be transported long distances in the atmosphere and deposited on watersheds where they become incorporated in aquatic ecosystems. Arsenic, selenium, cadmium and mercury are among the elements of most concern because of their potential negative effects on aquatic ecosystems and human health. To find out more about the introduction of these substances into the environment from the atmosphere, use the links in the "more info" table.

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This page was updated on 4/7/2004