天津市新装修住宅室内空气中甲醛污染特征分析

2010年2月至2011年3月期间对天津市25户新装修住宅不同功能房间的室内空气中甲醛污染情况进行了调查，并对其中8个点位进行了为期1年的跟踪监测．结果显示，所调查的新装修住宅在刚装修竣工后，室内空气中甲醛的检出率为100％，超标率68％，最大超标倍数为2_3倍．不同功能房间的甲醛质量浓度均值为卧室〉书房〉客厅．在不同季节，室内甲醛质量浓度均值为冬季〉春季〉秋季〉夏季．并建立了甲醛质量浓度随时间衰减的非线性模型，对室内甲醛的污染控制和浓度预测具有科学的指导意义．

Analysis of the Pollution Characteristics of Formaldehyde in Indoor Air of Newly Decorated Apartments in Tianjin

The pollution of formaldehyde in the indoor air of 25 newly decorated apartments in Tianjin was investigated from Feb. 2010 to Mar. 2011, and 8 representative apartments were tracked and monitored for about one year. The detection rate of formaldehyde in the 25 apartments was 100% immediately after decoration. In 68% of the apartments, the concentra- tion of formaldehyde exceeded 0.10 mg/m^3, and the maximum concentration was 2.3 times more than standard value. The results showed that the concentration of formaldehyde was in bedroom 〉 study〉 living room. In different seasons, the mean of formaldehyde concentration was winter〉spring〉autumn〉summer. A nonlinear model about the decay of formaldehyde concentration with time was established, which can be used to control and forecast the formaldehyde pollution and concen- tration.