RT Report
T1 Photochemical Oxidants: Environmental Health Criteria 7
A1 United Nations Environment Programme, 
A1 World Health Organization, 
K1 chemical
K1 photochemical oxidant
K1 environmental health
K1 ozone
K1 respiratory disease
K1 carcinogen
SN 92 4 154067 2
YR 1979
FD 1979
LK https://wedocs.unep.org/handle/20.500.11822/29271
UL https://wedocs.unep.org/handle/20.500.11822/29271
NO In the context of this report, photochemical oxidants are understood to include ozone, nitrogen dioxide, and peroxyacylnitrates. Many other compounds have been proposed as components of photochemical air pollution but, as little information is available concerning their biological significance, these substances have not been discussed in this document. As nitrogen dioxide is an important air pollutant in its own right, it is the subject of a separate document (World Health Organization, 1977). Thus this report deals mainly with ozone and "oxidants" as measured by the neutral buffered potassium iodide method (NBKI).
DS UN Environment Document Repository
RD Sep 17, 2026