Modelling uptake rates
A non-steady state model with diffusion inside a porous medium has been developed for the estimation of uptake rates in diffusive sampling. The model response has been checked for benzene and toluene adsorbed on Chromosorb 106 in a PE tube at different concentration levels for periods between 1 to 4 weeks. A good agreement has been found between experimental and model results. The model was able to foresee back diffusion for both compounds. Furthermore, the potential of the model for the optimisation of sampler design and/or the understanding of the sampler�s response to a particular sampling condition as, for instance, changes in concentration was also demonstrated. Errors due to the random variation of concentration were also evaluated.
Bibliographic Reference: An oral report given at: The International Conference Measuring Air Pollutants by Diffusive Sampling. Held in: Montpellier (FR), 26-28 September 2001
Record Number: 200114072 / Last updated on: 2001-11-23
Original language: en
Available languages: en