【摘要】 利用长光路ＦＴＩＲ测定甲苯、三甲苯等芳香烃化合物在烟雾箱中光化学反应衰减，确定了ＮＯｘＨ２ＯＡｉｒ、ＨＯＮＯＨ２ＯＡｉｒ和ＣＨ３ＯＮＯＮＯＡｉｒ ３种体系在黑光灯照射下的ＯＨ 浓度，结果表明三者ＯＨ浓度范围分别为：～１０５～１０６、～１０７、～１０７～１０８ｍ ｏｌｅｃｕｌｅｓ·ｃｍ － ３，并进一步讨论了反应前体物对生成ＯＨ 浓度的影响更多还原

【Abstract】 The concentration of hydroxyl radical in three different OH generating systems was measured from the decay of some aromatic hydrocarbons such as toluene and mesitylene using long path FTIR.These three systems were NO x H 2O Air,HONO H 2O Air and CH 3ONO NO Air,irradiated by four black lamps.Under the experimental conditions employed,the ranges of OH concentration were ～10 5 ～10 6,～10 7 and ～10 7～10 8molecules·cm -3 ,respectively.The factors influencing the concentration of the generated OH were discussed.更多还原