Casuarina and Eucalyptus response to single and multiple gaseous air pollutants |
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| Authors: | T Elkiey D P Ormrod |
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| Institution: | 1. Department of Horticultural Science, Alexandria University, El-Shatby, Egypt
2. Department of Horticultural Science, University of Guelph, N1G 2W1, Guelph, Ontario, Canada
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| Abstract: | Casuarina cunninghamiana and Eucalyptus camadulensis (Egyptian var.) plants were exposed to 0.20 and 0.40 μL L?1 O3, SO2 or NO2 for 6 hr daily for 10 days. Eucalyptus plants were very sensitive to SO2 and NO2 and less sensitive to O3. Casuarina plants were insensitive to the 3 gases. The rate of sorption of the 3 gases was estimated over a 10 day exposure to 0.20 μL L?1 pollutant concentration singly and in a 3-gas mixture. Casuarina plants removed air pollutants more efficiently than Eucalyptus plants. Leaves of both species generally sorbed about the same volume of a given gas from the mixture and from the same single gas. The sorption rate over the 10 day exposure was almost constant after a higher sorption rate during the first day for both species. |
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