Investigations into the Relations between Respiratory Illness in Children, Gas Cooking and Nitrogen Dioxide in the U. K.

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In 1977 an association was reported between the prevalence of respiratory illness and use of gas for cooking at home in a national sample of six to 11 year olds living in England and Scotland (p<.10). Other variables such as social class and number of cigarette smokers at home did not seem to explain the association. As the gas cooker is an unflued appliance emiting a variety of pollutants during gas combustion it was suggested that indoor air pollution might explain the finding. Nitrogen dioxide (NO_2) was suspected so a series of studies was conducted to investigate the distribution of levels of NO_2 in the home, the relative contribution of sources of NO_2 to indoor exposure and the relation between respiratory illness in six to 11 year olds and levels of NO_2 in the home. The gas cooker was found to be one of the main sources of NO_2 in the home. Winter weekly averages in kitchens with gas cookers had a mean of 112.2ppb (n=428, range 5-317ppb). Levels in electric cooking kitchens were significantly lower (n=87, mean 18ppb, range 6-188ppb). Studies of health indicated a relation between respiratory illness and bedroom levels of NO_2 over the range 4-169ppb (p≒.10). Results for living room levels of NO_2 suggested a similar but non-significant relationship (p>.10). No relation was found for kitchen levels of NO_2. For schoolchildren any effect on health from indoor NO_2 is likely to be weak. However other sections of the population such as infants and the elderly who may spend more time indoors and are particularly susceptible to respiratory illness need to be studied to assess fully the impact that NO_2 may be having on health.
東海大学の論文
1984-01-26

Investigations into the Relations between Respiratory Illness in Children, Gas Cooking and Nitrogen Dioxide in the U. K.

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