MEASUREMENTS OF EMISSION AND SINK EFFECTS FOR WALL COVERING MATERIALS BY USING A SMALL CHAMBER ADPAC

摘要

In this study, aldehydes and VOCs emission rates and sink effects for wall covering materials were investigated by using a small-scale chamber ADPAC (Advanced Pollution and Air quality Chamber). First, the measurements of emission rates were carried out for nine types of wall covering materials. Measurements were repeated after 1, 7 and 14 days. Emission rate of formaldehyde form a PVC wall covering was 42μg/m~2h after one day. Emission rates of wall coverings were equally decreased after 7 days, but they were increased again after 14 days. It may be supposed that some chemical substances were adsorbed on the wall coverings. Therefore, sink effects of wall covering materials were investigated for formaldehyde and toluene. Polluted air with given concentration was used. Span gas was used for experiments. By comparing the inlet and outlet concentration of the chamber, effect of adsorption on wall covering was investigated for formaldehyde and toluene.