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Technical rule [WITHDRAWN]

VDI 3799 Blatt 2:1991-10

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

German title
Messung von Immissions-Wirkungen; Ermittlung und Beurteilung phytotoxischer Wirkungen von Immissionen mit Flechten; Verfahren der standardisierten Flechtenexposition
Publication date
1991-10
Original language
German, English
Pages
14

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Publication date
1991-10
Original language
German, English
Pages
14

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Short description
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.
Content
ICS
13.040.01
Replacement amendments

This document has been replaced by: VDI 3957 Blatt 21:2019-07 , VDI 3957 Blatt 21:2017-02 .

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