VDI 2267 Blatt 4
Determination of suspended matter in ambient air - Measurement of the concentration of total gaseous mercury after manual sampling
Auf einen Blick
- Englischer Titel
-
Stoffbestimmung an Partikeln in der Außenluft - Messen der Konzentration des gesamten gasförmigen Quecksilbers nach manueller Probenahme
- Erscheinungsdatum
- 2023-02
- Herausgeber
- Engl. VDI/DIN-Kommission Reinhaltung der Luft (KRdL) - Normenausschuss
- Autor
- Technical Division Environmental Measurement Technologies
- Zugehörige Handbücher
- Seitenanzahl
- 37
- Erhältlich in
- Deutsch, Englisch
- Kurzreferat
-
This standard describes a manual method for determining the mass concentration of total gaseous mercury (TGM). The method does not distinguish between elemental, inorganic or organic mercury. Because of the low mass concentrations of TGM, an enrichment sampling method is used. For the determination of TGM the air is sucked through glass tubes with an amalgamation trap or a glass tube containing a mix catalysator as a sorbent. The particle-bound mercury is retained by an upstream filter. The analytical determination is performed by thermal desorption of the mercury, amalgamation and subsequent analysis by atomic absorption spectrometry (AAS) or atomic fluorescence spectrometry (AFS). The method is suitable for the determination of weekly to monthly mean values. In addition, a manual procedure for the determination of particle-bound mercury after filter sampling in ambient air is described in the Annex. The standard is aimed at: public authorities, industry, commerce, universities.
