![]() The approval prior to the research team’s arrival was handled by the Airport Management Center. This study required an extensive approval process involving five different airport authorities. found that coarse particles generated by crustal sources might have adverse health effects as strong as those of fine particles generated from combustion sources. Brunekreef and Forsberg have discussed the epidemiological evidence for effects of coarse particles on health and emphasized the importance of studying and regulating coarse particles separately from fine particles. Yet, neither study included the coarse particles PM 2.5–10 in the assessment. demonstrated that the building failed to provide sufficient protection for passengers from PM 2.5 and UFP exposures. concluded that the building’s ventilation system appeared to be efficient in terms of filtration, Ren et al. Other air quality parameters measured in the studies include TVOC and UFP. have examined the FP concentrations in airport terminal buildings in Italy and China, respectively. It is equally important to understand the air quality inside the terminal building as opposed to other parts of the airport. However, passengers spend most of their time at the airport inside the terminal buildings. Workers who resided in the terminal buildings were considered a low exposure group or control group in these studies compared to other workers whose activities were outdoor or in closer proximity to aircraft. measured the exposure to UFP for five occupational groups at the airport. Previous studies of airport workers have shown some evidence of correlation between chronic adverse respiratory symptoms and exposure to aviation fuel or jet stream exhaust. Aircraft also generate a significant amount of particulate matter as they idle near the ramps, taxi off the runway, and land onto the taxiways, which could infiltrate the building envelope and affect the air quality inside the terminal. Studies have shown that human activities, such as walking, often lead to particle resuspension which is an important indoor source of particulate matter. The airport terminal buildings experience a high fluctuation in the number of passengers that move through various parts of the building as well as the auxiliary spaces. These hurdles often act as discouragement for researchers during site selection of indoor air quality studies. Furthermore, obtaining the pre-approval from regulatory agencies adds another layer of complexity during the preparation phase of gaining permission to access the study site. Researchers with single-use escort passes still need to be accompanied by the airport security personnel to obtain measurements. Only passengers with boarding passes can wait by the entrance. Access to terminals and gates typically requires a thorough security check. However, indoor air quality studies inside the airport terminal buildings are still limited for good reasons. Other studies have looked at particle size distributions in the ambient air near the airports, such as in Hudda et al. Stacey provided a most recent review of UFP related studies conducted at or near the airport with a focus on aircraft emission. airports to evaluate the impact of aircraft emissions on ambient air quality. monitored the UFP level near runways at two U.S. ![]() More studies can be found on ambient air quality at or near the airport. used PM 2.5 as a parameter to assess indoor air quality in airport smoking rooms. also measured the indoor PM 2.5 and PM 10 mass concentration in the control tower. For example, the TVOC and other gas pollutants were evaluated inside the control tower by Helmis et al. Typical air quality parameters include total volatile organic compounds (TVOC), ultrafine particles (UFP) (particle diameters are less than 0.1 μm), fine particles (FP) or PM 2.5 (particle diameters are less than 2.5 μm), and PM 10 (particle diameters are less than 10 μm). A number of studies on air quality have been conducted in various facilities at airports around the world. In recent years, the importance of air quality assessment at the airport has gradually been acknowledged. ![]()
0 Comments
Leave a Reply. |