【摘要】 目的研究新装修居室空气中总挥发性有机物(TVOC)的污染状况及随时间变化的规律。方法于2005年3—9月,选择贵阳市2个城区2个住宅小区57户新装修居室(完工时间均不超过20d,均值为12d)为调查对象,对居室空气中总挥发性有机物进行6个月的监测。结果装修交付使用20d内,第1次监测新装修居室的TVOC浓度范围为0.532～23.560mg/m3,中位数为2.573mg/m3。装修后147d各居室TVOC浓度均低于标准值(0.6mg/m3)。根据完工后第1次测得的TVOC结果,将室内空气中TVOC分成3个污染水平(0.5～2.0mg/m3为低浓度组,>2.0～5.0mg/m3为中浓度组,>5.0mg/m3为高浓度组)。第1次监测结果显示,高浓度组TVOC浓度范围为5.520～23.560mg/m3,中位数为10.150mg/m3;中浓度组TVOC浓度范围为2.004～4.993mg/m3,中位数为2.320mg/m3;低浓度组TVOC浓度范围为0.532～1.905mg/m3,中位数为1.074mg/m3。以上各组TVOC浓度逐渐降低,达到标准值(0.6mg/m3)的时间依次为147、147、118d。结论新装修居室空气中TVOC污染严重,装修完工147d时居室空气中总挥发性有机物均能降低到标准值(0.6mg/m3)以下。更多还原

【Abstract】 Objective To investigate the pollution condition and concentration variability of TVOC in different time after the decoration finished. Methods 57 newly decorated houses were collected in two districts in Guiyang and TVOC monitoring was conducted for 6 months. Results At the first monitoring time, the content range of TVOC was 0.532-23.560 mg/m3 and the median was 2.573 mg/m3. The content range of high, middle and low concentration after determination was 5.520-23.560 mg/m3, 2.004-4.993 mg/m3 and 0.532-1.905 mg/m3 respectively and the median was 10.150, 2.320, 1.074 mg/m3 respectively. 147 days after the decoration the concentration decreased to 0.6 mg/m3. Conclusion The pollution of TVOC in the newly decorated houses is severe. 147 days after the decoration, the concentration of TVOC may decrease and reaches to under the standard limit.更多还原