REALTIME MEASUREMENT OF (PM-10) DUST LEVELS IN A CARPETED AND NON-CARPETED SCHOOL GYM ROOM

摘要

During the snow-covered period real-time (10-min. avg.) particle data were collected in two school gyms for fifteen weeks in Kennebunk, Maine, USA. VCT (Vinyl Composition Tile) floor covering was installed in one facility and VCTT (Vinyl Cushioned Tufted Textile; floor covering, referred to as a specialty high-grade commercial "carpet", was in the other. Intensive one-minute data was also collected during three "experiments" which evaluated the measured effect of typical sweeping, vacuuming, and burnishing of VCT. From the data it can be concluded that advances to contain breathable dust during burnishing activities are needed and that modern vacuum cleaning devices likely produce the least impact on indoor air quality. In the two rooms studied,,monitored (PM-10) dust levels were similar in the hard and soft-surface floors. The data points to a need to further understand factors that affect particle exposures in schools.