上海市居民住宅室内空气中典型VOCs浓度水平与污染特征
Study on concentration levels and pollution characteristics of typical VOCs in indoor air of residential buildings in Shanghai
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摘要: 为了解上海市居民住宅室内环境中VOCs的污染情况，于2019年对上海市内114户居民住宅进行研究，分析甲醛和TVOC的浓度水平与污染特征.结果表明，上海市居民住宅室内空气中甲醛的平均浓度和超标率分别为0.09 mg·m-3和25.8%；TVOC的平均浓度和超标率分别为0.51 mg·m-3和24.2%.两种污染物质的浓度均处于国内较低水平.不同季节中甲醛的浓度排序为：夏季 > 春季 > 秋季 > 冬季（P<0.05）；TVOC的浓度排序为：春季 > 夏季 > 秋季 > 冬季（P<0.05）.甲醛浓度在一年中的变化与季节有关，随着温度的上升，甲醛的浓度会随之升高；TVOC的浓度变化则与季节交替的关系不大.不同功能区域之间甲醛的浓度无显著性差异（P>0.05），TVOC的浓度由高到低依次为：娱乐室 > 厨卫 > 衣帽间 > 客厅 > 卧室、书房（P<0.05）.不同楼层甲醛和TVOC的浓度均无显著性差异（P>0.05）.甲醛的浓度与楼层高度基本不相关，TVOC的浓度随着楼层的升高呈现出下降的趋势.Abstract: In order to understand the pollution of VOCs in the indoor environment of residential buildings in Shanghai, 114 residential houses in Shanghai were studied in 2019 to analyze the concentration levels and pollution characteristics of HCHO and TVOC. The main results are showed as follows, the average concentration and exceeded rate of HCHO in the indoor air of residential buildings in Shanghai were 0.09 mg·m-3 and 25.8%, respectively. These two parameters of TVOC were 0.51 mg·m-3 and 24.2%, respectively. The concentrations of both pollutants were relatively low in China. The concentration of HCHO in different seasons was ranked as follows:summer > spring > autumn > winter (P<0.05). The concentration sequence of TVOC was exhibited as follows:spring > summer > autumn > winter (P<0.05). The change of HCHO concentration in a year was related to the season. However, the change of TVOC concentration had little relationship with the change of seasons. No significant difference of HCHO concentration was found between different functional areas (P>0.05), and the concentration of TVOC was ranked as follows:entertainment room > kitchen and bathroom > cloakroom > living room > bedroom and study room (P<0.05). No significant difference of HCHO concentration and TVOC concentration were found between different floors (P>0.05). The concentration of HCHO was basically unrelated to the floor height, and the concentration of TVOC tended to decrease with the rise of the floor.
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Key words:
- indoor air /
- VOCs /
- concentration level /
- pollution characteristic /
- Shanghai
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