Predicting the emission rate of volatile organic compounds fromvinyl flooring

Journal Article · Thu Mar 01 04:00:00 EST 2001 · Environmental Science & Technology

OSTI ID:862003

Cox, Steven S; Little, John C; Hodgson, Alfred T

A model for predicting the rate at which a volatile organic compound (VOC) is emitted from a diffusion-controlled material is validated for three contaminants (n-pentadecane, n-tetradecane, and phenol) found in vinyl flooring (VF). Model parameters are the initial VOC concentration in the material-phase (C{sub 0}), the material/air partition coefficient (K), and the material-phase diffusion coefficient (D). The model was verified by comparing predicted gas-phase concentrations to data obtained during small-scale chamber tests, and by comparing predicted material-phase concentrations to those measured at the conclusion of the chamber tests. Chamber tests were conducted with the VF placed top side up and bottom side up. With the exception of phenol, and within the limits of experimental precision, the mass of VOCs recovered in the gas phase balances the mass emitted from the material phase. The model parameters (C{sub 0}, K, and D) were measured using procedures that were completely independent of the chamber test. Gas- and material-phase predictions compare well to the bottom-side-up chamber data. The lower emission rates for the top-side-up orientation may be explained by the presence of a low-permeability surface layer. The sink effect of the stainless steel chamber surface was shown to be negligible.

• Research Organization: Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
• Sponsoring Organization: USDOE Assistant Secretary for Energy Efficiency andRenewable Energy; National Science Foundation
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 862003
• Report Number(s): LBNL--47094
• Journal Information: Environmental Science & Technology, Journal Name: Environmental Science & Technology Journal Issue: 4 Vol. 36
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
54 ENVIRONMENTAL SCIENCES
ACCURACY
DIFFUSION
ORGANIC COMPOUNDS
ORIENTATION
PHENOL
STAINLESS STEELS
VOLATILE MATTER
indoor air diffusion model material emissions vinyl flooringvolatile organic compounds