VDI 3869 Blatt 3-2008 Measurement of ammonia in ambient air - Sampling with diffusion separators (denuders) - Photometric or ion chromatographic analysis
2010VDI 3869 Blatt 3-2010 Measurement of ammonia in ambient air - Sampling with diffusion separators (denuders) - Photometric or ion chromatographic analysis
2008VDI 3869 Blatt 3-2008 Measurement of ammonia in ambient air - Sampling with diffusion separators (denuders) - Photometric or ion chromatographic analysis
1996VDI 3869 Blatt 3-1996 Measurement of acids and bases in ambient air - Measurement of ammonia; sampling in diffusion separators coated with phosphoric acid - Determination by flow injection analysis