| Title: | A review on characteristics and mitigation strategies of indoor air quality in underground subway stations |
| Author(s): | Yang J; Fan X; Zhang H; Zheng W; Ye T; |
| Address: | "School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China. School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China; Key Laboratory of Efficient Utilization of Low and Medium Grade Energy (Tianjin University), Ministry of Education of China, Tianjin 300350, PR China; National Engineering Laboratory for Digital Construction and Evaluation Technology of Urban Rail Transit, Tianjin 300000, PR China. School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China; Key Laboratory of Efficient Utilization of Low and Medium Grade Energy (Tianjin University), Ministry of Education of China, Tianjin 300350, PR China; National Engineering Laboratory for Digital Construction and Evaluation Technology of Urban Rail Transit, Tianjin 300000, PR China. Electronic address: wdzheng@tju.edu.cn" |
| DOI: | 10.1016/j.scitotenv.2023.161781 |
| ISSN/ISBN: | 1879-1026 (Electronic) 0048-9697 (Linking) |
| Abstract: | "Due to the rapidly increasing ridership and the relatively enclosed underground space, the indoor air quality (IAQ) in underground subway stations (USSs) has attracted more public attention. The air pollutants in USSs, such as particulate matter (PM), CO(2) and volatile organic compounds (VOCs), are hazardous to the health of passengers and staves. Firstly, this paper presents a systematic review on the characteristics and sources of air pollutants in USSs. According to the review work, the concentrations of PM, CO(2), VOCs, bacteria and fungi in USSs are 1.1-13.2 times higher than the permissible concentration limits specified by WHO, ASHRAE and US EPA. The PM and VOCs are mainly derived from the internal and outdoor sources. CO(2) concentrations are highly correlated with the passenger density and the ventilation rate while the exposure levels of bacteria and fungi depend on the thermal conditions and the settled dust. Then, the online monitoring, fault detection and prediction methods of IAQ are summarized and the advantages and disadvantages of these methods are also discussed. In addition, the available control strategies for improving IAQ in USSs are reviewed, and these strategies are classified and compared from different viewpoints. Lastly, challenges of the IAQ management in the context of the COVID-19 epidemic and several suggestions for underground stations' IAQ management in the future are put forward. This paper is expected to provide a comprehensive guidance for further research and design of the effective prevention measures on air pollutants in USSs so as to achieve more sustainable and healthy underground environment" |
| Keywords: | "*Air Pollution, Indoor/analysis *Railroads Carbon Dioxide Environmental Monitoring/methods *covid-19 Particulate Matter/analysis *Air Pollutants/analysis *Volatile Organic Compounds/analysis Bacteria Fungi Air pollutant COVID-19 pandemic Control strategie;" |
| Notes: | "MedlineYang, Junbin Fan, Xianwang Zhang, Huan Zheng, Wandong Ye, Tianzhen eng Review Systematic Review Netherlands 2023/01/29 Sci Total Environ. 2023 Apr 15; 869:161781. doi: 10.1016/j.scitotenv.2023.161781. Epub 2023 Jan 25" |
