Ambient air measurement - Measurement of peroxyacetyl nitrate (PAN) - Preparation of PAN calibration gas
German title
Messen gasförmiger Immissionen - Messen von Peroxiacetylnitrat (PAN) - Herstellen von PAN Prüfgas
Publication date
2006-03
Original language
German,
English
Pages
11
Publication date
2006-03
Original language
German,
English
Pages
11
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Short description
This guideline specifies a dynamic method for the preparation of PAN calibration gases with concentrations in the range of a few ppb (1 ppb = 10-9), 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.