VDI 2468 Blatt 8
Ambient air measurement - Measurement of peroxyacetyl nitrate (PAN) - Preparation of PAN calibration gas
Auf einen Blick
- Erscheinungsdatum
- 2006-03
- Englischer Titel
-
Messen gasförmiger Immissionen - Messen von Peroxiacetylnitrat (PAN) - Herstellen von PAN Prüfgas
- Seitenanzahl
- 11
- Erhältlich in
- Deutsch, Englisch
- Zugehörige Handbücher
Kurzreferat
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.