VDI 3799 Blatt 2
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Withdrawn
Measurement of immission effects; measurement and evaluation of phytotoxic effects of ambient air pollutants (immissions) with lichens; method of standardized lichen exposure
At a glance
- German title
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Messung von Immissions-Wirkungen; Ermittlung und Beurteilung phytotoxischer Wirkungen von Immissionen mit Flechten; Verfahren der standardisierten Flechtenexposition
- Publication date
- 1991-10
- Withdrawal date
- 2017-02
- Replacement document
- Publisher
- Engl. VDI/DIN-Kommission Reinhaltung der Luft (KRdL) - Normenausschuss
- Related manuals
- Number of pages
- 14
- Available in
- German, English
- Abstract
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Pollutant induced thallus injury of the exposed lichen is determined. Dead lichen parts are free of green or bluish green pigments. They can be recognized by their white to greyish discoloration. The degree of injury, i.e. the percentage of injured thallus in comparison to the total thallus, is determined at the end of the exposure period.