Evaluation of the biocide diffusion from treated wood in indoor air. Bibliographic study

IRG/WP 3584

A Pichard

Within the frame of the risk assessment of the wood preservation products for the Health, the treated wood risk particularly when it is installed in dwellings becomes most important. The European directive "Building materials" (89/106/CEE) mentions the basic requirements with the buildings must comply. Annexe l states in particular that "the building must be conceived and built in order not to become a threat to the Hygiene or the health of the inhabitants. Thus, the treated wood installed in dwellings is concerned. Due to the lack of the official standardized methods, it has appeared interesting to study through literature: -- the well-known methods concerning Formaldehyde diffusion from glue of particle boards, -- the existing works on biocides diffusion from treated wood, -- the parameter entering in the evaluation of quantities diffused in the air, -- the assessment of actual results. This study concludes that the evaluation of biocides diffusion in the indoor air is made by the following process: -- a definition of the experimental protocols adapted for the claims, -- an estimation of the concentrations in the indoor air, from the experimental results, -- an assessment of the human health risk. Some of the existing works already give a better understanding of the factors and parameters which must be taken account. They will make easier the approach of the various experts who will have to cooperate to set up the standard.


Keywords: AIR; BIBLIOGRAPHY; DIFFUSION; ENVIRONMENT; FORMALDEHYDE; GLUE; HEALTH; INDOOR AIR; PARTICLEBOARDS; RISK ASSESSMENT; METHODS

Conference: 90-02-19/20 Cannes, France


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