Sensory and chemical characterization of VOC emissions from building products : impact of concentration and air velocity.
The emissions from five commonly used building products were studied in small-scale test chambers over a period of 50 days.
The odor intensity was assessed by a sensory panel and the concentrations of selected volatile organic compounds (VOCs) of concern for the indoor air quality were measured.
The building products were three floor coverings : PVC, floor varnish on beechwood parquet and nylon carpet on a latex foam backing ; an acrylic sealant, and a waterborne wall paint on gypsum board.
The impacts of the VOC concentration in the air and the air velocity over the building products on the odor intensity and on the emission rate of VOCs were studied.
The emission from each building product was studied under two or three different area-specific ventilation rates, i.e. different ratios of ventilation rate of the test chamber and building product area in the test chamber.
The air velocity over the building product samples was adjusted to different levels between 0.1 and 0.3 m/s. The origin of the emitted VOCs was assessed in order to distinguish between primary and secondary emissions.
The results show that it is reasonable after an initial period of up to 14 days to consider the emission rate of VOCs of primary origin from most building products as being independent of the concentration and of the air velocity.
However, if the building product surface is sensitive to oxidative degradation, increased air velocity may result in increased secondary emissions. (...)
Mots-clés Pascal : Produit bâtiment, Revêtement sol, Revêtement mural, Vinylique chlorure polymère, Tapis moquette, Matériau étanchéité, Peinture, Vernis, Pollution intérieur, Emission polluant, Composé organique volatil, Qualité air, Teneur émission, Mesure émission, Odeur, Perception sensorielle, Toxicité, Analyse risque
Mots-clés Pascal anglais : Building product, Floor covering, Wall covering, Polyvinyl chloride, Moquette carpet, Sealing material, Paint, Varnish, Indoor pollution, Pollutant emission, Volatile organic compound, Air quality, Emission content, Emission measure, Odor, Sensorial perception, Toxicity, Risk analysis
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0153473
Code Inist : 001D16C06. Création : 16/11/1999.