Formaldehyde
Measurements conducted in Germany and considered
to be representative for the air in the rural areas of Central Europe ranged from 0.1 to 4.5 g/m³,
with a mean value of about 1.5 g/m³. Measurements in a highly industrialised area with also heavy
traffic conducted in Germany (1979 1984) gave annual mean values of 7 12 g/m³ (WHO IPCS,
1989). Additional measurements conducted in recent years in different locations indicate mean
outdoor concentrations ranging from 2.5 g/m³ to 15.7 g/m³ (Jurvelin, 2001).
Indoor (non-workplace)
Indoor air levels, measured in various countries, ranged between <10 g/m³ and a maximum of 5260
g/m³. The highest levels were measured in trailers in Germany. The concentrations are mainly
dependent on the age of the building, building materials, type of construction and ventilation (WHO
IPCS, 1989). In more recent monitoring campaigns conducted in various countries, mean indoor
concentrations of formaldehyde in a range between 20.2 g/m³ (0
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