A study by a Japanese public
health researcher found that
it took three years for the level
in cars to fall below the limit set for vehicles
by the Japanese health ministry in response
to an increase in the number of car owners suffering
from sick building syndrome.
The chief researcher at the
Osaka Institute of Public Health, analysed the air inside a new minivan every
week for the
first two months and every month after
that. The van was driven 3,500 miles a year.
On the day after delivery, the
van was found to contain 113
kinds of volatile organic chemicals, mostly
hydrocarbons. It took four months
to fall below the safe limit set by
the state but shot above it again in the hot
summer months even after two years.
The researcher recommends thorough ventilation (windows open whenever possible, even when parked) and expressed the hope that manufacturers would develop materials that did not give off such large amounts of chemicals.
The sorts of chemicals found
in this research are generally
not found in the external environment
and include some well-known toxins.
So leaving the new car at home, or driving
with the windows open, is not only good for
the environment and the pocket book,
but is apparently good for
your health, too.