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本文分析了冬季一所小学五间教室空气污染状况。测定结果:教室CO_2浓度和空气细菌含量均是随课时延长逐渐增高。第二节课后CO_2含量(1030ppm)和细菌总数(35825.9个/m~3)达到高峰,在不同的时间里有三间教室CO_2浓度超过1000ppm。表明,教室空气污染严重;开窗通气前后空气清洁有非常显著性差异(P<0.001)。
This paper analyzes the air pollution in five classrooms in a primary school in winter. Determination results: classroom CO 2 concentration and air bacteria content are gradually increased with the class extension. After the second class, the CO 2 content (1030ppm) and the total number of bacteria (35825.9 个 / m ~ 3) reached the peak, with three classroom CO 2 concentrations exceeding 1000ppm at different times. The air pollution in the classroom was very serious. There was a significant difference (P <0.001) in air cleaning before and after the window ventilation.