การกระจายตัวตามแนวตั้งของฝุ่นละอองขนาดไม่เกิน 10 ไมครอนบริเวณอาคารสูง ประเภทสำนักงาน และที่พักอาศัย

• المؤلف الرئيسي: ฌัฏฐนีฌา เนตร์นรินทร์
• مؤلفون آخرون: ทรรศนีย์ พฤกษาสิทธิ์
• التنسيق: Senior Project
• اللغة: Thai
• منشور في: จุฬาลงกรณ์มหาวิทยาลัย 2019
• الموضوعات: ฝุ่น > การวัด; Dust > Measurement
• الوصول للمادة أونلاين: https://digiverse.chula.ac.th/Info/item/dc:10504
• المؤسسة: Chulalongkorn University

This research aims to study the vertical distribution of particulate matter less than 10 microns at high-rise office building and residential building. PM₁₀ was measured by a real-time monitor, i.e. Aeroqual series 500. The samples were measured at each building for 14 days. At office building, the instruments were placed at 4.5 and 138.5 m during 13 – 27 January 2020, while the measurement at residential building was taken place at 12.8 and 124.9 m during 30 January – 11 February 2020. As a result of this study, the 24-h average outdoor concentration at both height levels of the office building were 43.09±17.28 μg/m³ for ground level and 46.96±26.20 μg/m³ for upper level, and those of residential building at ground and upper levels were 42.65±16.84 μg/m³ and 37.61±14.21 μg/m³, respectively. Also, those of the indoor concentration at both height levels of the office building were 41.71±19.60 and 38.95±23.79 μg/m³, respectively, and the values of 34.91±12.00 and 26.11±9.19 μg/m³ were determined at ground and upper levels of the residential building respectively. The diurnal profiles of indoor and outdoor PM₁₀ were different between both buildings. The highest hourly concentration of PM₁₀ at office building was found at 10am, whereas the peak was observed at 5pm for residential building. The lowest hourly concentration was similarly observed at 2am and 1am at office building and residential building, respectively. When comparing between indoor and outdoor concentrations of each level at each building, I/O ratios of both heights at the residential building and the upper floor of the residential building were less than 1, while that of the ground level at the office building was more than 1. The concentration of PM₁₀ observed at the upper level decreased -11.36±6.23% from the ground, but a different trend was found some days (10/14 days) at the office building that the concentration increased 6.66±7.83% from the ground. At both high-rise buildings, there were two meteorological factors that gave the same relationship with the PM₁₀ concentration, air pressure could enhance an increase of PM₁₀, but wind speed gave negative association.