新乡市新装修住房室内空气中甲醛浓度的调查

目的了解新乡市新装修住房室内空气中甲醛的污染现状，为室内空气污染控制提供理论依据。方法依据GB／T18883--2002《室内空气质量标准》测定某新装修（装修结束不超过9个月）的无中央空调系统的民用住房，测定其室内空气中的甲醛浓度。结果居室甲醛超标较为严重，室内甲醛浓度为0．022—0．169mg／m3，户合格率仅为40．91％；随着装修结束后通风时间的延长，室内空气中甲醛的浓度呈下降趋势（P〈0．05）。结论新装修住房室内空气中甲醛污染比较严重，装修后应加强通风换气有利于降低甲醛浓度。

Investigation on concentration of formaldehyde in indoor air of new decorated housing in Xinxiang

Objective] To understand the pollution situation of formaldehyde in indoor air of new decorated housing in Xinxiang, provide scientific evidences for the control of indoor air pollution. Methods] According to GB/T 18883-2002 ＂Indoor Air Quality Standards＂, the formaldehyde content was detected in indoor air of new decorated housing （ within 9 months ） which were not in- stalled air condition. Results] The formaldehyde in house exceeding the standard was serious. The formaldehyde content was 0. 022- 0. 169 mg/m3 and the qualified rate was only 40.91%. As the extension of ventilation time after decoration, the formalde- hyde content appeared a downward trend （P 〈 0.05 ）. Conclusion] The indoor air pollution by formaldehyde was significant. En- hancing ventilation after decoration is conducive to reduce the content of formaldehyde.