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VDI 2468 Blatt 8

Ambient air measurement - Measurement of peroxyacetyl nitrate (PAN) - Preparation of PAN calibration gas

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German title

Messen gasförmiger Immissionen - Messen von Peroxiacetylnitrat (PAN) - Herstellen von PAN Prüfgas

Publication date
2006-03
Publisher
Engl. VDI/DIN-Kommission Reinhaltung der Luft (KRdL) - Normenausschuss
Author
Technical Division Environmental Measurement Technologies
Related manuals
Number of pages
11
Available in
German, English
Abstract

This guideline specifies a dynamic method for the preparation of PAN calibration gases with concentrations in the range of a few ppb (1 ppb = 10<(hoch)-9>), i.e., the relevant range for ambient air measurements. The method is based on the permeation of acetone into a carrier gas flow, followed by photolytic cleavage of the acetone molecules to yield peroxyacetyl radicals and the reaction of these radicals with nitrogen monoxide (NO) to form PAN.

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