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中文摘要：
使用DRIFTS实验装置模拟SO2在α-Fe2O3等矿质铁氧化物表面的多相化学反应过程及其对粒子光学特性的影响.结果表明,在一定氧气浓度(5%～40%)条件下,SO2与α-Fe2O3的反应随氧气浓度的升高导致8.7μm波段粒子后向散射系数和吸收系数均呈现出先增加后减小的趋势;反应120min后,氧气浓度5%,10%,21%和40%多相反应过程中的粒子吸收系数分别达到0.288,2142,4669,67km-1,后向散射系数分别为0,59685,76043,19184km-1.在一定O2和SO2条件下,多种铁氧化物的多相化学反应对8.7μm波长粒子吸收和后向散射系数表现出不同的影响,其相对大小顺序为α-Fe2O3】γ-Fe2O3】α-FeOOH】Fe3O4】β-FeOOH.此研究结果将有益于深入了解大气中SO2与矿尘多相反应对气溶胶辐射强迫的作用.
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