| Title | Impacts of Household Coal Combustion on Indoor Ultrafine Particles-A Preliminary Case Study and Implication on Exposure Reduction |
| Authors | Luo, Zhihan Xing, Ran Huang, Wenxuan Xiong, Rui Qin, Lifan Ren, Yuxuan Li, Yaojie Liu, Xinlei Men, Yatai Jiang, Ke Tian, Yanlin Shen, Guofeng |
| Affiliation | Peking Univ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Atmospher Environm & Equip, Jiangsu Key Lab Atmospher Environm Monitoring & P, Nanjing 210044, Peoples R China |
| Keywords | BIOMASS COOKSTOVES SIZE DISTRIBUTION AIR-POLLUTION EMISSION FACTORS TERM EXPOSURE WOOD HEALTH PM2.5 DISTRIBUTIONS PENETRATION |
| Issue Date | May-2022 |
| Publisher | INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH |
| Abstract | Ultrafine particles (UFPs) significantly affect human health and climate. UFPs can be produced largely from the incomplete burning of solid fuels in stoves; however, indoor UFPs are less studied compared to outdoor UFPs, especially in coal-combustion homes. In this study, indoor and outdoor UFP concentrations were measured simultaneously by using a portable instrument, and internal and outdoor source contributions to indoor UFPs were estimated using a statistical approach based on highly temporally resolved data. The total concentrations of indoor UFPs in a rural household with the presence of coal burning were as high as 1.64 x 10(5) (1.32 x 10(5)-2.09 x 10(5) as interquartile range) #/cm(3), which was nearly one order of magnitude higher than that of outdoor UFPs. Indoor UFPs were unimodal, with the greatest abundance of particles in the size range of 31.6-100 nm. The indoor-to-outdoor ratio of UFPs in a rural household was about 6.4 (2.7-16.0), while it was 0.89 (0.88-0.91) in a home without strong internal sources. A dynamic process illustrated that the particle number concentration increased by similar to 5 times during the coal ignition period. Indoor coal combustion made up to over 80% of indoor UFPs, while in an urban home without coal combustion sources indoors, the outdoor sources may contribute to nearly 90% of indoor UFPs. A high number concentration and a greater number of finer particles in homes with the presence of coal combustion indicated serious health hazards associated with UFP exposure and the necessity for future controls on indoor UFPs. |
| URI | http://hdl.handle.net/20.500.11897/643418 |
| DOI | 10.3390/ijerph19095161 |
| Indexed | SCI(E) SSCI |
| Appears in Collections: | 城市与环境学院 |
