装修后室内空气甲醛污染研究

目的　了解装修后住宅室内空气中甲醛的污染情况。方法　选择装修结束后不同时间的住宅 ,分别测定空气中甲醛的含量 ;同时选定装修 10年以上的 4家住宅作为对照检测 ,并分析其影响因素。结果　装修后3个月 ,室内空气中甲醛平均浓度 ,超出我国规定的室内卫生标准 7 75倍 ,样品超标率为 10 0 % ;装修后 1年 ,空气中甲醛平均浓度超出室内卫生标准 2 75倍 ,样品超标率为 91 7% ;装修后 1年 ,空气中甲醛浓度明显低于装修后 3个月住宅。人造板材的使用量对室内甲醛浓度具有明显影响。通风可大大降低室内甲醛的浓度。结论　室内通风情况、装修后时间、板材装载量等是影响室内空气中甲醛浓度的主要因素

Investigation on the Housing Decoration Pollution from Formaldehyde

Objective To undestand the housing deciration pollution from the formaldehyde Methods The house they selected had been decorated in deferent period They detected formaldehyde in all of them After analying the relative factors,the average concentration of formaldehyde in indoor air exceeded 7 75 times as high that of the sanitary standard of indoor places(0 08mg/m 3),and the over stanard rate of the air samples was 100% in the groud of 3 months after decoration The conrresponding data in the group of 1 year after decration was 2 75 and 91 7% respectively The concentration of formaldehyde in the 1 year after decoration is lower than that in the 3 months after decoration And ventilation can lower the concentration ofindoor formaldehyde obviously Conclrsion The main factors effecting the sanitary quality of indoor formaldehyde were defined as follows:the indoor ventilaion,period after decoration and the density of plywood