人群散发对高校教室室内TVOC浓度动态影响的实测分析*
Impact analysis of human emission on total volatile organic compound concentration in university classrooms: A field study
摘要：
随机选取南京某高校10间在室人员密集的教室,在其使用期间对室内总挥发性有机化合物（TVOC）和CO2浓度、温湿度，以及室内人员数量和典型活动状况（如开关门窗）等进行了连续监测和对比分析。研究结果表明：冬、春、夏季测试教室室内TVOC质量浓度分别为（363.1±121.7），（218.4±11.5），（583.3±38.9） μg/m3；室内TVOC浓度变化与CO2类似，总体呈现先上升后下降的趋势，并与室内人员数量变化呈强正相关性；室内TVOC浓度水平存在季节性差异。室内总源强度的估算结果表明，室内不同样本数量的人群散发强度与室内TVOC浓度变化类似，随着人数变化，呈现出先逐渐增大，然后趋于相对稳定，最后逐渐减小的趋势。
Abstract：
Randomly selects ten in-use densely populated classrooms of a university in Nanjing, continuously monitors and compares the concentrations of indoor total volatile organic compound (TVOC) and CO2, air temperature and humidity, as well as the indoor occupancy rate and human activities (such as opening doors and windows). The results show that, the indoor TVOC concentration in the test classrooms is 363.1±121.7, 218.4±11.5, 583.3±38.9 μg/m3 in winter, spring and summer, respectively. The indoor TVOC concentration increases at first and then decreases, which is similar to that of CO2, and has a significantly positive correlation with the change of the indoor occupancy rate. In addition, seasonal difference of indoor TVOC concentration is significant among those classrooms. The estimated results of indoor total emission rate indicate that both indoor TVOC concentrations and human emission rates vary with sample population size, with the trends of increasing at first, then keeping relatively stable, and finally decreasing gradually.
Keywords:indoor air quality, university building, total volatile organic compound, human emission, field measurement