新装修住宅室内空气甲醛污染调查分析

Investigation on Indoor Air Contamination by Formaldehyde in Newly Decorated Apartments

[目的 ]了解新装修住宅室内空气甲醛污染情况及其变化规律。 [方法 ]对 4套新装修住宅用变色酸比色法 ,对卧室和客厅门窗的开、关及门窗关、闭 ,橱门开、关等不同状态进行甲醛浓度分析。 [结果 ]室内空气的甲醛浓度是室外的 6 .6 5倍 ,为 0 .492 mg/ m3;在门窗关闭时甲醛 10 0 %超标 ;门窗开与关之间甲醛浓度有非常显著差别 ;甲醛浓度与测定日期成负相关 ,与室温成正相关 ;橱门开与关之间甲醛浓度的差别亦有非常显著性意义。 [结论 ]用人工胶合板制作的家具是室内空气甲醛的主要污染源 ,常开门窗 ,加强通风 ,是降低甲醛浓度的主要办法。

Objective] To study indoor air contamination by formaldehyde (FM) and its variation regularity in newly decorated apartments. [Methods] To detect the concentration of FM in the room of newly decorated apartment with colorimetry of color variable acid under different conditions. [Results] The indoor concentration of FM was 0.492 mg/m 3 and 6.65 times higher than outdoor. There was very significant difference in FM concentration between opening and closing windows of room and doors of cabinet. The concentration was negatively correlated with the date finishing decoration and positively with the air temperature. [Conclusions] The furniture made of plywood is the main contamination source of FM. Opening the windows frequently can reduce FM concentration of indoor air.