枣庄市15户新装修家庭居室空气中甲醛污染状况

目的了解枣庄市新装修家庭居室内空气中甲醛的污染状况及其影响因素。方法分不同地点、不同时间测定15户居室装修后空气中甲醛浓度,同时设立对照房间。结果在15户居室装修后1、3、6、9、12个月室内空气中甲醛浓度均超过国家卫生标准(GB/T 18883~2002)规定的0.10 mg/m3,并明显高于对照房浓度(F=1 771.84,P<0.001);装修后不同时间测定的甲醛浓度有显著性不同(F=818.47,P<0.001);居室装修后12个月客厅与卧室内甲醛浓度差异有统计学意义(t=8.76,P<0.001),卧室内浓度显著高于客厅浓度;不同楼层甲醛浓度随楼层的增高有下降的趋势(F=19.102,P<0.001)。结论新装修居室空气中甲醛污染状况严重,甲醛浓度随时间的延长而缓慢降低,开窗通风是最有效、最直接降低甲醛浓度的方法。

Formaldehyde Contamination Status in the Air of 15 Newly- Decorated Family Rooms in Zaozhuang

Objective]To learn the formaldehyde contamination status in the air of 15 newly-decorated family rooms in Zaozhuang.Methods]Formaldehyde concentration in the air of 15 newly-decorated rooms were detected according to different places and times,meanwhile,a control room was also set up and detected.Results]Formaldehyde concentrations in the 15 rooms 1,3,6,9 and 12 months after decoration all exceeded the national hygienic standard(0.10mg/m~3) and also significantly higher than that in the control room(P<0.001);significant difference was found in the formaldehyde concentration between different times after decoration(P<0.01);the formaldehyde concentration in the bedrooms was significantly higher than that in the living rooms(P<0.001);the formaldehyde concentration in the higher floors was lower than that in the lower floors(P<0.001).Conclusion]Formaldehyde contamination in the newly-decorated rooms is quite serious but decreases as time goes by;ventilation is the most direct and effective method to reduce the concentration of formaldehyde.