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Odors and volatile organic compounds released from ventilation filters
AbstractUsed supply air filters were studied by sensory and chemical methods. In addition, filter dust was examined by thermodesorption/cold trap (TCT) and headspace (HS) devices connected to a GC–MS. The prefilter was the main odor source in the ventilation unit, but when humidifier was turned on odor was released mainly from the fine filter. However, the effect of the relative humidity (RH) was only temporary. At the same time, there was an increase in the concentration of aldehydes after the filters. Aldehydes, carboxylic acids, and nitrogen-containing organic compounds were the main emission products in the thermodesorption analyses of the filter dust. Many of these compounds have low odor threshold values and, therefore, contribute to the odor released from the filters. Especially, the role of aldehydes seems to be important in the odor formation.
Odors and volatile organic compounds released from ventilation filters
AbstractUsed supply air filters were studied by sensory and chemical methods. In addition, filter dust was examined by thermodesorption/cold trap (TCT) and headspace (HS) devices connected to a GC–MS. The prefilter was the main odor source in the ventilation unit, but when humidifier was turned on odor was released mainly from the fine filter. However, the effect of the relative humidity (RH) was only temporary. At the same time, there was an increase in the concentration of aldehydes after the filters. Aldehydes, carboxylic acids, and nitrogen-containing organic compounds were the main emission products in the thermodesorption analyses of the filter dust. Many of these compounds have low odor threshold values and, therefore, contribute to the odor released from the filters. Especially, the role of aldehydes seems to be important in the odor formation.
Odors and volatile organic compounds released from ventilation filters
Hyttinen, Marko (author) / Pasanen, Pertti (author) / Björkroth, Marko (author) / Kalliokoski, Pentti (author)
Atmospheric Environment ; 41 ; 4029-4039
2007-01-11
11 pages
Article (Journal)
Electronic Resource
English
An Investigation of Odors and Volatile Organic Compounds Released during Composting
| Taylor & Francis Verlag | 1999
Threshold Odors of Organic Chemicals
| Wiley | 1963
| British Library Online Contents | 2009