2008～2009年溧阳市部分住宅室内空气甲醛污染状况调查

Survey on the Status of Indoor Air Formaldehyde Contamination among Residential Apartments in Liyang City,2008-2009

[目的]探讨住宅装修后室内空气甲醛污染状况及变化规律。[方法]2008年3月至2009年6月,在溧阳市选取10户新装修居民住宅,对室内空气甲醛浓度进行为期12个月的连续检测。[结果]10户住宅室内空气甲醛平均浓度(mg/m3),装修前为0.004,完工当日、装修后第2个月、第4个月、第6个月、第8个月、第10个月、第12个月分别为0.196、0.200、0.155、0.115、0.089、0.078、0.072,装修后6次检测甲醛浓度的差异有统计学意义(P<0.05);完工当日、装修后第2个月、第4个月、第6个月、第8个月、第10个月、第12个月甲醛合格率分别为5.00%、12.50%、32.50%、52.50%、72.50%、90.00%、95.00%(P<0.01)。居室室内空气甲醛浓度合格率,装修后的客厅、卧室、书房、厨房分别为50.00%、48.71%、42.86%、58.57%(P>0.05)。[结论]溧阳市住宅装修后8个月时室内空气中甲醛平均浓度达到《室内空气质量标准》的要求,甲醛浓度随着时间延长呈下降趋势。

[Objective] To study the status of indoor air formaldehyde contamination among residential apartments after decoration and the law of change.[Methods]From March 2008 to June 2009,10 newly decorated residential apartments were sampled in Liyang city to conduct indoor air formaldehyde concentration test for 12 consecutive months.[Results]The average indoor air formaldehyde concentration（mg/m3） in 10 residential apartments was 0.004 before decoration,and 0.196,0.200,0.155,0.115,0.089,0.078,and 0.072,respectively on the day upon completion,2 months after completion,4 months,6 months,8 months,10 months,12 months,with statistical difference in formaldehyde concentration testing（P0.05）;the passing rate of formaldehyde was 5.00%,12.50%,32.50%,52.50%,72.50%,90.00%,and 95.00%（P0.01） on the day upon completion,2 months after completion,4 months,6 months,8 months,10 months,12 months.The passing rate of indoor air formaldehyde concentration was 50.00%,48.71%,42.86%,and 58.57% respectively（P0.05） for the living room,bedroom,study,kitchen.[Conclusion]The average indoor air formaldehyde concentration in Liyang city reach the indoor air quality standards requirements,and the formaldehyde concentration is decreasing with time.