| Abstract = Long-term
emission testing of VOCs (months) of new and conditioned building products
(carpets, paints, and sealants) using the Field and Laboratory Emission
Cell (FLEC) has revealed discontinuous decay behaviour and secondary emission
processes. The key VOC from the carpets was 4-phenylcyclohexene which exhibited
a marked discontinuous decrease after approximately four months. Other
VOCs also showed discontinuous profiles and one which started increasing
after several months. The paints showed normal declining emission profiles,
however, one emitted Texanol at a nearly constant emission rate over a
period of several months. The sealants exhibited emission profiles which
after some time increased. Time values measured by long-term testing and
calculated time values based on short term emission data and determined
from emission constants were in good agreement for the sealants. |