This document specifies a method for the sampling and analysis of NH3 in ambient air using diffusive sampling. It can be used for NH3 measurements at ambient levels@ but the concentration range and exposure time are sampler dependent@ and the end user is therefore advised to comply with the operating instructions provided by the manufacturer. NOTE Denuders may be used as a surrogate reference method until there are improvements in the continuous optical methods.
PREN 17346-2019 history
2019PREN 17346-2019 Ambient Air Quality - Standard method for the determination of the concentration of ammonia by diffusive sampling