Investigation on formaldehyde pollution in indoor air of new decorated house

Objective To investigate the status of formaldehyde pollution in indoor air of the decorated houses,and to explore its effect factors.Methods 66 apartments decorated from one month to almost one year and 28 roughcast apartments were selected and the concentration of formaldehyde were determined by portable readability Digital formaldehyde analyzing machine.Results In the same period after decorating,there was significant difference of formaldehyde concentration between bigh temperature period and low temperature period(P0.05).Formaldehyde concentration of high temperature period was 5times as much as that of the low temperature conditions.Furniture was also the source of formaldehyde pollution.Conclusion The main factors influencing formaldehyde content in indoor air included the quality and the amount of decorating material,time after decoration and indoor temperature.Good airiness was in favor of formaldehyde releasing.