COMPARING EMISSION CELLS TO SMALL CHAMBERS FOR MATERIALS EMISSIONS TESTING

摘要

Emission cells are small portable devices for the determination of surface emission rates (SERs) of volatile- and semi-volatile organic compounds ((S)VOCs) from indoor materials/products. They differ from small chambers in that the material surface effectively becomes part of the emission cell. This paper presents a comparison of emission cells and small chambers with respect to the following key performance aspects: ease-of-use, application range, repeatability (required for reliable product classification/characterisation) and usefulness of the data for prediction of product/material emissions in the indoor environment. The key issues of uniformity of surface air velocity, sample inhomogeneity and comparative testing of evaporative emissions will be discussed in detail.