不同气温条件下室内甲醛污染特性的探讨

用酚试剂分光光度法（GB／F18204．26—2000）对装修后室内空气中的甲醛进行测定。通过一年多的实测表明：气温在13.0℃-24．0℃范围内，测试结果的超标率为27．8％，测试结果均值为0．077mg／m^3，气温在25．0℃-30．0℃范围内，测试结果的超标率为78．1％，测试结果均值为0．270mg／m^3，两个温度段超标率相差2．8倍多，测试结果均值相差3．5倍多。室内空气中甲醛浓度与室内温度呈线性关系，表明气温对室内空气中甲醛的释放量有明显的影响。

Study of Characteristics of Indoor Formaldehyde Pollution under Different Air Temperature

Formaldehyde of indoor air in decorated rooms was determined by spectrophotometry with MBTH. For the study of more than one year,the results indicated that the exceeding rate of the result was 27.8% in the range of 13.024.0, the average of the result was 0.077mg/m~3; the exceeding rate of the result was 78.1% in the range of 25.030.0, the average of the result was 0.270 mg/m~3, the exceeding rates of two temperature ranges differ more 2.8 times, the averages of the result differ more 3.5 times. The concentration of formaldehyde in indoor air has a linear relation to the indoor temperature. It makes clear that the emitting quantity of formaldehyde is obviously affected by indoor temperature.