VDI 3794 Blatt 3-2007 Determination of deposition fluxes of ambient air pollutants - Determination of the deposition flux of nitrogen oxides (NOy) by means of the IRMA-method
2009VDI 3794 Blatt 3-2009 Determination of deposition fluxes of ambient air pollutants - Determination of the deposition flux of atmospheric nitrogen oxides (NOy) using the IRMA method
2007VDI 3794 Blatt 3-2007 Determination of deposition fluxes of ambient air pollutants - Determination of the deposition flux of nitrogen oxides (NOy) by means of the IRMA-method