出版社：Thai Society of Higher Eduction Institutes on Environment
摘要：Bangkok, one of mega-cities, has faced environmental problems from high density of populationsand traffic for many years. This study aims to quantify roadside fine particulate matters (PM) in termof PM2.5 (diameter less than 2.5 μm) and PM10 (diameter less than 10 μm) in construction relatedareas and traffic congested areas. The eastern routes, Pattanakan and Srinagarindra, those are locatedbetween inbound and outbound junction were selected as the studied sites. PM2.5 was sampled usingmini-volume air sampler, while PM10 was sampled using cyclone air sampler. The PM was collectedfor 12 hours/day, continued 5 days for each sites, during November to December 2018. Then the dustsamples were extracted by acidified microwave digestion. Five heavy metals (Fe, Cu, Zn, Cd, and Pb)were analyzed by Graphite Furnace Atomic Absorption Spectroscopy (GFAAS). The traffic conditionsmonitored from video-camera were found more crowded in construction related area than traffic relatedarea. The average PM2.5 and PM10 concentrations in construction related area (39.38 μg/m3 and 55.08μg/m3, respectively) were higher than the control area without construction (36.15 μg/m3 and 48.87μg/m3, respectively). The lowest concentration was (17.28 μg/m3 and 27.32 μg/m3) for the backgroundsite. However, it is the matter of the benefit to provide convenience in the future after the construction,whether the environmental problems could be solved in the long terms. This will be worth wide tomonitor the trend of pollution changes and health impact in the future.
关键词：Particulate matter; Heavy metals; Construction activity; Overcrowded traffic; Graphite;Furnace Atomic Absorption Spectroscopy (GFAAS)
