室内空气中甲醛和苯与温湿度及大气压关系的统计分析

采用国家标准分析方法,对室内空气中由装修材料和家居用品释放出的甲醛和苯含量进行了检测。通过对一年内在北京地区采集的1000余个室内空气检测数据的统计分析,发现甲醛和苯浓度的超标现象比较普遍,尤其在6~8月份达到全年的最高值。室内空气中甲醛的浓度随相对应环境的温度和湿度的增大而增加,与大气压力的关系变化不明显,其中湿度对室内甲醛释放能力的影响显著;苯的浓度与其相对应环境的温度、湿度及大气压力的关系不具有明显的相关性。

Statistic Analysis of the Release Characteristics of Formaldehyde and Benzene in Indoor Air

Contents of formaldehyde and benzene in indoor air(released from fitment materials and furniture) were determined by national standard methods.Statistics of the analytical data from more than 1000 samples collected from Beijing area in one year indicated that formaldehyde and benzene contents in most samples exceeded the critical values.The maximum values appeared usually in June,July and August and the contents of formaldehyde of indoor air increased with room temperature,humidity,but had little correlation with atmospheric pressure.Humidity greatly affected the release of formaldehyde.The release of benzene had no obvious correlation with temperature,humidity and atmospheric pressure.