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首页> 外文期刊>Environmental Science & Technology >PTR-MS Assessment of Photocatalytic and Sorption-Based Purification of Recirculated Cabin Air during Simulated 7-h Flights with High Passenger Density
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PTR-MS Assessment of Photocatalytic and Sorption-Based Purification of Recirculated Cabin Air during Simulated 7-h Flights with High Passenger Density

机译：PTR-MS在高客运密度的模拟7小时飞行中对光催化和基于吸附的循环机舱空气净化的评估

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Four different air purification conditions were established in a simulated 3-row 21-seat section of an aircraft cabin: no air purifier; a photocatalytic oxidation unit with an adsorptive prefilter; a second photocatalytic unit with an adsorptive prefilter; and a two-stage sorption-based air filter (gas-phase absorption and adsorption). The air purifiers placed in the cabin air recirculation system were commercial prototypes developed for use in aircraft cabin systems. The four conditions were established in balanced order on 4 successive days of each of 4 successive weeks during simulated 7-h flights with 17 occupants. Proton-transfer reaction mass spectrometry was used to assess organic gas-phase pollutants and the performance of each air purifier. The concentration of most organic pollutants present in aircraft cabin air was efficiently reduced by all three units. The photocatalytic units were found to incompletely oxidize ethanol released by the wet wipes commonly supplied with airline meals to produce unacceptably high levels of acetaldehyde and formaldehyde.
机译：在飞机机舱的模拟3排21座区域中建立了四种不同的空气净化条件。具有吸附性预过滤器的光催化氧化单元；具有吸附预过滤器的第二光催化单元；和两级吸附式空气过滤器（气相吸附和吸附）。放置在机舱空气再循环系统中的空气净化器是开发用于飞机机舱系统的商业原型。在模拟的17小时乘员飞行7小时的过程中，每4个连续周中的每个连续4天以平衡的顺序确定这四个条件。质子转移反应质谱法用于评估有机气相污染物和每个空气净化器的性能。所有这三个单元都有效地降低了机舱空气中存在的大多数有机污染物的浓度。发现光催化单元不能完全氧化通常由飞机餐提供的湿纸巾释放的乙醇，从而产生不可接受的高水平的乙醛和甲醛。

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