Abstract
A long-term fumigation trial was set up on some foliage trees and conifers, as indicators, to see if there was synergistic effect of SO/sub 2/ and O/sub 3/. Three trees were fumigated from June until October in long term fumigation chambers. The following volume fractions were used: O/sub 3/ 50 ppb and SO/sub 2/ 100 ppb. To measure the O/sub 3/ concentration, two McMillan O/sub 3/ monitors and a standard gas generator were acquired. On seven of eleven plant species used, visible differences between fumigated and control plants were observed (chlorosis, necrosis and leaf drop). The plants fumigated with SO/sub 2/ were analysed for total SO/sub 4//sup 2 -/. The tree species showed very great differences in mass fraction (1.20-4.85% SO/sub 4//sup 2 -/), while the control plants had 0.54-2.53%. Mass fraction in wood varied very little in fumigated plants, 0.20-0.64%, in control plants 0.16-0.36%. The conclusion that, if the sulfate contents in healthy plant and a damaged plant are almost equal, the damage of a plant could not be caused by SO/sub 2/, is wrong. Short-term fumigations with a high concentration of SO/sub 2/ caused injury, but SO/sub 4//sup 2 -/ content was not or nearly not affected.
Citation Formats
Mooi, J.
Investigation of the sensitivity of trees and shrubs to air pollution.
Netherlands: N. p.,
1975.
Web.
Mooi, J.
Investigation of the sensitivity of trees and shrubs to air pollution.
Netherlands.
Mooi, J.
1975.
"Investigation of the sensitivity of trees and shrubs to air pollution."
Netherlands.
@misc{etde_6179212,
title = {Investigation of the sensitivity of trees and shrubs to air pollution}
author = {Mooi, J}
abstractNote = {A long-term fumigation trial was set up on some foliage trees and conifers, as indicators, to see if there was synergistic effect of SO/sub 2/ and O/sub 3/. Three trees were fumigated from June until October in long term fumigation chambers. The following volume fractions were used: O/sub 3/ 50 ppb and SO/sub 2/ 100 ppb. To measure the O/sub 3/ concentration, two McMillan O/sub 3/ monitors and a standard gas generator were acquired. On seven of eleven plant species used, visible differences between fumigated and control plants were observed (chlorosis, necrosis and leaf drop). The plants fumigated with SO/sub 2/ were analysed for total SO/sub 4//sup 2 -/. The tree species showed very great differences in mass fraction (1.20-4.85% SO/sub 4//sup 2 -/), while the control plants had 0.54-2.53%. Mass fraction in wood varied very little in fumigated plants, 0.20-0.64%, in control plants 0.16-0.36%. The conclusion that, if the sulfate contents in healthy plant and a damaged plant are almost equal, the damage of a plant could not be caused by SO/sub 2/, is wrong. Short-term fumigations with a high concentration of SO/sub 2/ caused injury, but SO/sub 4//sup 2 -/ content was not or nearly not affected.}
journal = []
journal type = {AC}
place = {Netherlands}
year = {1975}
month = {Jan}
}
title = {Investigation of the sensitivity of trees and shrubs to air pollution}
author = {Mooi, J}
abstractNote = {A long-term fumigation trial was set up on some foliage trees and conifers, as indicators, to see if there was synergistic effect of SO/sub 2/ and O/sub 3/. Three trees were fumigated from June until October in long term fumigation chambers. The following volume fractions were used: O/sub 3/ 50 ppb and SO/sub 2/ 100 ppb. To measure the O/sub 3/ concentration, two McMillan O/sub 3/ monitors and a standard gas generator were acquired. On seven of eleven plant species used, visible differences between fumigated and control plants were observed (chlorosis, necrosis and leaf drop). The plants fumigated with SO/sub 2/ were analysed for total SO/sub 4//sup 2 -/. The tree species showed very great differences in mass fraction (1.20-4.85% SO/sub 4//sup 2 -/), while the control plants had 0.54-2.53%. Mass fraction in wood varied very little in fumigated plants, 0.20-0.64%, in control plants 0.16-0.36%. The conclusion that, if the sulfate contents in healthy plant and a damaged plant are almost equal, the damage of a plant could not be caused by SO/sub 2/, is wrong. Short-term fumigations with a high concentration of SO/sub 2/ caused injury, but SO/sub 4//sup 2 -/ content was not or nearly not affected.}
journal = []
journal type = {AC}
place = {Netherlands}
year = {1975}
month = {Jan}
}