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VDI 3799 Blatt 2 - Withdrawn

Measurement of immission effects; measurement and evaluation of phytotoxic effects of ambient air pollutants (immissions) with lichens; method of standardized lichen exposure

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German title

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

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.

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