Investigation on indoor air pollution caused by indoor decoration in Erdos city

Objective To investigate the pollutional status of acteone and acetaldehyd in indoor air after the house is decorated, provide evidences for eliminating and controlling of indoor air pollution. Methods ornament group was divided into 3 groups(0~≤6 month group, 6~≤12month group, 12~≤18month group). The concentration of acteone and acetaldeyde determined with HPLC method,(the concentration of some samples' s formaldehyde and NO2was determined by spectrophotometry). Results 8 kinds of pollutants of acteone and acetaldehyde were detected in varing degrees,Formaldehyde had the highest detection rate and over standard rate, the highest concentration of Formaldehyde was 0.69 mg/m3,exceed the standard nearly seven times, the point exceeding standard rate of Formaldehyde was 59.38%. However,the NO2content of indoor air without exceeding the limits. Concentrations of formaldehyde in 18 months had no significant difference between different time periods(P0.05), but had a positive correlation trend with the room temperature(r= 0.77, P0.05). Conclution The indoor air pollution of newly decorated room existed widely, especially the early decoration room, formaldehyde is main indoor air pollutants of acteone and acetaldehyde.