EPA-Modeled Impacts of Ethanol Use Show Some Ozone Decreases, Strongest Ozone Increases in Some Conventional Gasoline Areas

摘要

The U.S. EPA estimates most areas of the country will see small increases in ozone as a result of greater use of ethanol, which has been shown to raise vehicle emissions of precursors VOCs and NOx. However, under certain circumstances, ozone levels could decline slightly.