荆门市装修后居室空气质量的调查

目的了解荆门市装修后居室污染情况。方法选择2006-2008年装修时间在12个月以内的70户装修家庭，检测室内空气中的甲醛、氨浓度，并进行分析。结果氨均未检出，甲醛超标率为72．56％。卧室、书房、客厅超标率分别为85．91％、80．00％、48．57％，经χ2检验，三者间差异有统计学意义（P〈0．01）。装修后3个月以内、3～6个月、7—12个月甲醛超标率分别为89．01％、66．67％,49．12％，经χ2检验，三者间差异有统计学意义（P〈0.05）。结论居室装修导致的室内空气污染：以甲醛最严重，甲醛的浓度超标率因房间功能不同差异有统计学意义，并随着装修后时间的间隔延长而呈下降趋势。

Investigation on Indoor Air Quality after Decoration in Jingmen City

Objective ] To understand the indoor air pollution after decoration in Jingmen City Methods ] Totally 70 houses which were decorated within 12 months during 2006--2008 were selected, the formaldehyde and ammonia concentration of indoor air were detected. Results]Ammonia were not detected in all air samples, the over standard rate of formaldehyde was 72.56%. The over 2 standard rate of formaldehyde in bedroom, study room and living room was 85.91%, 80.00%, 48.57%, respectively, proved by χ2 test, the differences were significant between them（ P 〈 0.01）. We also collected air samples within 3 months after decoration, 89.01% of them exceed the recommended concentration of formaldehyde. And samples from 3 months to 6 months and from 6 months to 12 months,66. 67% and 49. 12% of them exceeded the recommended concentration respectively,the differences were significant between them { P 〈 0. 05 }. Conclusion ] House decoration causes indoor air pollution, especially for formaldehyde. The difference of formaldehyde over standard rate between different rooms was significant in terms of room function; and the formaldehyde concentration decreased with time lapse.