The limit values recommended in section 2 are proposed with the primary aim of
protecting human health. However, by reducing ambient air concentration of NO2
other benefits will be achieved such as reductions in material damage and
improvements in ecosystems. In urban areas the number of people exposed to high
peak concentrations and to high average exposures will decrease. Information on
health benefits are to expected to be estimated by WHO.
As seen from the risk assessment, there is no exposure - effect relationship for NO2
and materials available today. Consequently, there is insufficient evidence to quantify
the magnitude of damage (e.g. of cultural heritage) and thus the benefit of reductions
(as discussed by Mohr et al., 1997) .
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castellano: DISPER CUSTIC DESCAR RADIA italiano:
deutsch: DIS CUS DES RAD
castellano: DIS CUS DES RAD english: DIS CUS DES RAD
português: DIS CUS DES RAD italiano: DIS CUS DES RAD
français: DIS CUS DES RAD