【摘要】 目的：系统了解青岛市公共场所室内空气质量，把握不同场所主要健康危害因素的日变化规律。方法：利用连续性在线监测设备在青岛市6类重点公共场所内对PM_2.5、PM₁₀、NO₂、O₃、NO、CO、噪声及温湿度等因素进行连续在线24小时监测。结果：酒店客房颗粒物浓度呈白天低、夜晚高的波动状态，酒店大堂则为白天高、夜晚低，夜间酒店客房内、白天酒店大堂内会出现PM_2.5浓度超标情况，占全天的8.3%～12.5%。酒店大堂、健身房及交通枢纽候车室监测点位的O₃浓度较高且日变化差异较大。NO₂浓度整体呈现出白天高于夜晚的特点，酒店大堂和交通枢纽候车室观察到明显的双峰分布。各场所噪声强度白天显著高于夜晚，酒店客房噪声合格率不足25.0%，超市则100.0%超标。结论：在线连续性监测结果显示所监测的公共场所室内健康危害因素存在明显的日变化规律，其中以噪声超标问题最为突出；室内活动或人员流动及室外环境是造成健康危害因素日变化的可能因素。更多还原

【Abstract】 OBJECTIVE To systematically learn about indoor air quality in public places in Qingdao,and to grasp the daily variation of the main hazard factors in different public places. METHODS Online continuous monitoring equipment was used to monitor PM_2.5,PM₁₀,NO₂,O₃,NO,CO,noise,temperature and relative humidity in 6 key public places in Qingdao for 24 hours. RESULTS The concentrations of particulate matter in hotel rooms fluctuated between low in the day and high in the night,while that in hotel lobbies was high in the day and low in the night. PM_2.5 exceeded the standard in the rooms at night and in the lobby during the day, accounting for 8.3% ～12.5% of the whole day. The O₃ concentrations at the monitoring points of hotel lobbies,gyms and transportation hubs were high and the daily variation were large,NO₂ as a whole presents a higher daytime than night feature,with distinct double peaks observed in the hotel lobby and transportation hub waiting room. The noise in each public place was higher in the day than at night,the qualified rate of hotel rooms was less than 25.0%,and 100.0% of supermarkets exceed the standard. CONCLUSION The online continuous monitoring shows that the indoor health hazard factors in public places have obvious daily changes,among which the problem of excessive noise is the most prominent,Indoor activities or movement of people and outdoor environment are the possible factors causing diurnal variation.更多还原