Abstract：Objective To investigate the current status of inhalable particle matter (PM10) pollution in central air conditioning ventilation system of public places in Zhuhai City, and to provide a basis for standardizing the hygienic management of central air conditioning ventilation system in public places. Methods Fifty-six public places with central air conditioning ventilation system in Zhuhai City were randomly selected for this survey. PM10 concentration in the air in air conditioning systems and the amount of dust on the duct surface were detected. Results Of the 56 public places, 41.1% were not regularly cleaned, 42.9% had sundries in air conditioning rooms, 21.4% had pollution sources around the fresh air outlet, and 75.0% were only equipped with primary effect air conditioning filters. The total qualified rate of PM10 concentration in the air in air conditioning systems was 67.9%, and PM10 concentration in the air in air conditioning systems in different types of public places showed statistically significant (H=152.477, P<0.001). The qualified rates of PM10 concentration in the air in clean and unclean air conditioning systems were 78.8% and 52.2% respectively, showing a statistically significant difference (χ2=4.401, P=0.036). The qualified rates of PM10 concentration in the air in air conditioning systems with primary or medium effect air conditioning filters showed a statistically significant difference (χ2=6.986, P<0.01). There was a positive correlation between the amount of dust on the duct surface and PM10 concentration in the air in air conditioning systems (r=0.696, P<0.001). Conclusions The relevant functional departments should strengthen hygienic management and inspection of air conditioning systems in public places, and the unqualified public places should be ordered to clean and disinfect their air conditioning systems so as to improve indoor air quality.
陆广智, 胡俊, 张秋平, 覃俊, 林丽玲, 杨仁东. 珠海市公共场所集中空调通风系统可吸入颗粒物污染现况调查[J]. 实用预防医学, 2019, 26(2): 163-165.
LU Guang-zhi, HU Jun, ZHANG Qiu-ping, QIN Jun, LIN Li-ling, YANG Ren-dong. Current status of inhalable particle matter pollution in central air conditioning ventilation system of public places in Zhuhai City. , 2019, 26(2): 163-165.
2019, Vol. 26 
