Li W M, Lee S C, Chan L Y
Research Centre for Urban Environmental Technology and Management, Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong Special Administrative Region, PR China.
Sci Total Environ. 2001 Jun 12;273(1-3):27-40. doi: 10.1016/s0048-9697(00)00833-0.
Hong Kong is one of the most attractive shopping paradises in the world. Many local people and international tourists favor to spend their time in shopping malls in Hong Kong. Good indoor air quality is, therefore, very essential to shoppers. In order to characterize the indoor air quality in shopping malls, nine shopping malls in Hong Kong were selected for this study. The indoor air pollutants included carbon dioxide (CO2), carbon monoxide (CO), total hydrocarbons (THC), formaldehyde (HCHO), respirable particulate matter (PM10) and total bacteria count (TBC). More than 40% of the shopping malls had 1-h average CO2 levels above the 1000 ppm of the ASHRAE standard on both weekdays and weekends. Also, they had average weekday PM10 concentrations that exceeded the Hong Kong Indoor Air Quality Objective (HKIAQO). The highest indoor PM10 level at a mall was 380 microg/m3. Of the malls surveyed, 30% had indoor airborne bacteria levels above 1000 cfu/m3 set by the HKIAQO. The elevated indoor CO2 and bacteria levels could result from high occupancy combined with insufficient ventilation. The increased PM10 levels could be probably attributed to illegal smoking inside these establishments. In comparison, the shopping malls that contained internal public transport drop-off areas, where vehicles were parked with idling engines and had major entry doors close to heavy traffic roads had higher CO and PM10 indoor levels. In addition, the extensive use of cooking stoves without adequate ventilation inside food courts could increase indoor CO2, CO and PM10 levels.
香港是世界上最具吸引力的购物天堂之一。许多当地人和国际游客都喜欢在香港的购物中心消磨时光。因此，良好的室内空气质量对购物者来说非常重要。为了描述购物中心的室内空气质量，本研究选取了香港的九个购物中心。室内空气污染物包括二氧化碳（CO₂）、一氧化碳（CO）、总碳氢化合物（THC）、甲醛（HCHO）、可吸入颗粒物（PM₁₀）和细菌总数（TBC）。超过40%的购物中心在工作日和周末的1小时平均CO₂水平都高于美国采暖、制冷与空调工程师协会（ASHRAE）标准的1000 ppm。此外，它们的工作日平均PM₁₀浓度超过了香港室内空气质量指标（HKIAQO）。一个购物中心的室内PM₁₀最高水平为380微克/立方米。在接受调查的购物中心中，30%的室内空气细菌水平高于HKIAQO设定的1000 cfu/立方米。室内CO₂和细菌水平升高可能是由于高客流量和通风不足所致。PM₁₀水平的增加可能归因于这些场所内的非法吸烟。相比之下，设有内部公共交通下车区的购物中心，车辆在那里怠速停放且主要入口靠近繁忙交通道路，其室内CO和PM₁₀水平较高。此外，美食广场内大量使用烹饪炉灶且通风不足，可能会增加室内CO₂、CO和PM₁₀水平。
