Reproducibility of VOC emission measurements from paint films
In the development of a test chamber method for the determination of VOCs emitted from indoor materials, a second interlaboratory comparison has been undertaken, with the participation of eighteen laboratories from ten countries. In addition to the parameters usually controlled, the design included the control of the chamber air speed and of the source film thickness. Moreover, two mathematical models (dilution and sink) were adopted to derive the initial mass (M(0)) in and the emission rate (k(1)) from the material, a water-based paint. Interlaboratory agreement is not yet satisfactory. The main causes for this are the preparation of the paint film specimen and the sampling and analysis of the vapours. Significant differences result between data obtained with FID or MS detectors. Considering that widely differing chambers have been used, the influence of the chamber itself on the results is less evident, but there is a need to understand how air speed/turbulence may condition the emission rate.
Bibliographic Reference: Article: Indoor Air - International Journal of Indoor Air Quality and Climate (1995)
Record Number: 199511221 / Last updated on: 1995-10-13
Original language: en
Available languages: en