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室内空气中挥发性有机物的释放特征分析 被引量:8

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摘要 房屋装修后1周、1个月、3个月、6个月、12个月采集其室内空气样品进行甲醛、苯系物浓度的测定,分析释放规律;另选某处新居于装修后24h、1周、1个月且密闭状态下采集室内空气中总挥发性有机化合物(TVOC)样品分析研究。结果表明,房屋装修后12个月内甲醛浓度随时间呈非线性递减,多项式回归方程为:y=0.27713-0.19972x+0.07974x2-0.01167x3+0.00052561x4,其中y为甲醛质量浓度,mg/m3;x为时间,月;各苯系物浓度也随时间呈逐渐下降趋势,且通过SPSS13.0软件进行Spearman相关性分析,发现各苯系物间显著相关;装修后不同时间段室内空气中TVOC组分发生变化,随着房屋封闭时间延长,TVOC浓度超标严重;TVOC组分的增多或减少是由于室内装修材料TVOC释放的增强或减弱,以及门窗缝隙所带来的微弱通风造成,无二次污染物的生成。
出处 《环境污染与防治》 CAS CSCD 北大核心 2008年第12期102-105,共4页 Environmental Pollution & Control
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