Identification of Indoor Air Quality (IAQ) Sources in Libraries through Principal Component Analysis (PCA)

作     者：A Abu Mansor S Shamsul S Abdullah N C Dom N N L Mohd Napi A N Ahmed M Ismail 

作者机构：Faculty of Science and Marine Environment Universiti Malaysia Terengganu 21030 Kuala Nerus Terengganu Malaysia Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia Terengganu 21030 Kuala Nerus Terengganu Malaysia Institute of Tropical Biodiversity and Sustainable Development Universiti Malaysia Terengganu 21030 Kuala Nerus Terengganu Malaysia Centre of Environmental Health & Safety Faculty of Health Sciences Universiti Teknologi MARA UiTM Cawangan Selangor 42300 Puncak Alam Selangor Malaysia Institute of Energy Infrastructure (IEI) Department of Civil Engineering College of Engineering Universiti Tenaga Nasional (UNITEN) Kajang Selangor Darul Ehsan 43000 Malaysia 

出 版 物：《IOP Conference Series: Materials Science and Engineering》 

年 卷 期：2021年第1144卷第1期

摘      要：Indoor air quality (IAQ) is an important role in affecting visitors and staffs health in library. However, good ventilation and suitable types of furniture materials in the indoor environment were important to preserve better indoor air quality for the occupants. In this study, the status of indoor air pollution using in-situ measurement for chemical and physical parameters had been examined. The chemical parameters measured were formaldehyde (CH2O, ppm), carbon monoxide (CO, ppm), carbon dioxide (CO2), fine particulate matter (PM2.5, mg/m3) and coarse particulate matter (PM10, mg/m3). The physical parameters such as relative humidity (RH, %), temperature (T, °C) and air movement (AM, m/s) were also measured. The dominant sources of IAQ had been determined by using Principal Component Analysis (PCA). Principle Component (PC-2, S1) and PC-1 (S2) (CO, CO2 and CH2O) have become the indicator for chemical contaminants and the number of occupants that present in the library. The main contributor of indoor air quality at both areas was thermal comfort, which contributed 56.146% (PC-3, S1) and 60.76% (PC-4, S2). In conclusion, air quality in the libraries was affected by surrounding activities, ventilation performance and physical parameters.