室内装修装饰产生的苯系物污染及其影响因素调查

Study on Benzene Compounds Pollution from Indoor Decoration and Factors

[目的]了解装修装饰后室内空气中苯系物污染状况,探讨其影响因素,为控制苯系物污染提供依据.[方法]2004年1～6月,我们对北京市近郊区装修装饰后(家具已进入)的53户家庭和39所学校进行调查.[结果]检测53户居室,5户苯浓度超标,16户甲苯浓度超标,4户二甲苯浓度超标;检测39间教室,1间苯浓度超标,2间甲苯浓度超标.随着装修后时间延长苯系物的超标率均有所下降;室内空气容积越大,苯系物超标率越小.超标的5户家庭中,4户每天通风至少1 h,持续0.5～1个月,苯系物浓度均明显下降;1户间断通风2个月,苯系物浓度下降不明显.[结论]目前居室装修装饰后苯系物污染物以甲苯为主.装饰装修后要每天至少通风1 h,连续1个月后才能入住.

Objective]To investigate benzene compounds from indoor decoration,analyze the factors that impact on this kind of indoor pollution,and supply data for pollution control [Methods]The indoor air of 53 houses and 39 schools in Beijing after decoration was detectcd between January,2004 and June,2004 [Results]Among 53 houses, benzene concentration in 5 houses, toluene concentration in 16 houses and xylene concentration in 4 houses are over the standard Also, among 39 schools,benzene concentration in one school and toluene concentration in 2 schools are over the standard With time going on, the rate over standard of benzene compounds will descend And also benzene compounds concentration in bigger houses are lower than in small houses in general For the five houses in which benzene compounds are over standard, we split them into two groups: group one consists of 4 houses, and group two one house For group one, we ventilate each house one hour every day and keep doing this for half a month to one month It shows that the concentration of benzene compounds decrease greatly For group two, we ventilate the house for two months,but we do not do so every day The concentration of benzene compounds in group two reduce only a little [Conclusions]In current indoor decoration, toluene is the main pollutant,thus the newly decorated house had better be ventilated at least one hour every day for one month before living in