Emission of volatile organic compounds (VOC) from building materials is a complex process of mass transfer.To have a clear picture of mass transfer characteristics

this paper first established an explicitly fully analytical model describing VOC emission behavior from dry building materials

which is applicable to emission simulation in static chamber that is most unfavorable to human health.The VOC concentration in the chamber predicted based on the mass transfer parameters in literature is in good agreement with corresponding experimental data and numerical calculation in literature.Based on this model

an experimental method is proposed for convenient

rapid and simultaneous measurement of four important mass transfer parameters for VOC emission prediction(emittable concentration C0

diffusion coefficient D

partition coefficient K and convection mass transfer coefficient hm) by making use of emission equilibrium or process concentration in a static chamber at a series of background concentrations. With the values of C0

D

K and hm for formaldehyde emission mass transfer obtained experimentally from two different medium density fiberboards

the numerically predicted results of VOC concentration in either static or dynamic chamber are coincident with experimental data.The model and method are accurate enough for emission simulation of building materials.