清扫对室内空气中颗粒物浓度的影响

对办公室进行干扫、湿扫和通风干扫等实验,分析清扫对室内空气中颗粒物浓度的影响。结果表明:干扫、湿扫和通风干扫实验组中PM10的质量浓度达到的最大值分别为6 527.9,305.5,3 804.8μg/m3,对应的PM2.5的质量浓度达到的最大值分别为391.5,155.3,286.3μg/m3;湿扫和通风干扫可以明显降低室内空气中各颗粒物浓度的增加和各颗粒物在空中的停留时间;干扫后的各颗粒物浓度平均值明显大于湿扫和通风干扫。为了维护室内空气质量及清扫人员的身体健康,应尽可能地在通风状态下进行湿扫。

Influences of Sweeping on the Concentration of Particulate Matter in the Indoor Air

The effects of dry sweeping, wet sweeping and ventilation dry sweeping in the office on the concentration of particulate matter in the indoor air were analyzed. Results show that maximum mass concentrations of PM~0 during dry sweeping, wet sweeping and ventilation dry sweeping are 6 527.9, 305.5, 3 804.8 gg/m3, and the corresponding values for PMz5 are 391.5, 155.3, 286.3 ixg/m3 respectively; Wet sweeping and ventilation dry sweeping can significantly decrease the increase of the particle concentration in indoor air and the particle residence time in the air. The average concentration of inhalable particulate matter of dry sweeping is significantly larger than that of wet sweeping and ventilation dry sweeping. According to the experiment results, to maintain indoor air quality and protect the health of the cleaning staff, office cleaning should ideally be implemented with wet sweeping in a ventilation state.