|Abstract = Methods
for characterizing indoor sources and sinks are continuously being developed
and improved. Test protocols (e.g., for chamber tests) are needed to specify
equipment requirements, testing conditions, and data analysis methods.
Protocols are being published by standards-setting organizations (e.g.,
ASTM), international groups (e.g., CEC), and individual countries (e.g.,
Denmark). Both empirical models and fundamental mass transfer models are
being developed to predict the emission behavior of sources and sinks.
These models can be validated using dynamic chamber data from properly
executed experiments. Validated source emissions models can be used to
evaluate options for material selection or labelling based on chemical
emission characteristics and known human responses to these chemicals.
Another approach involves measurement of human sensory response and animal
irritation response to identify sources with potential problems. Chamber
systems that combine chemical emissions determinations with sensory response
have also been developed. Use of emissions testing to evaluate and select
indoor materials and products is expected to increase as test methods become
standardized and assessment techniques are agreed upon.