The Uptake of SO2 and NO2 by Plants

Abstract

Foliar removal of sulfur dioxide and nitrogen dioxide was measured in a closed exposure system. The purpose was to identify local plant species capable of removing appreciable amounts of these gases from the air. Seedlings of twenty-one plants were exposed to known concentrations of the pollutant. The difference in pollutant concentration before and after exposure period was taken as the amount absorbed by the plant.