Kinetics of HO2 Uptake in Levoglucosan and Polystyrene Latex Particles
Kinetics of HO2 Uptake in Levoglucosan and Polystyrene Latex Particles
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DOI：
10.1021/jz100478s
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发表时间：
2010-05
影响因子：
5.7
通讯作者：
F. Taketani;Y. Kanaya;H. Akimoto
中科院分区：
文献类型：
--
作者：
F. Taketani;Y. Kanaya;H. Akimoto
采用气溶胶流管（AFT）结合化学转换/激光诱导荧光（CC/LIF）技术，研究了常温（760 Torr，296 ± 2 K）下左旋葡聚糖和聚苯乙烯胶乳（PSL）亚微米气溶胶颗粒对HO 2的吸收系数（γ）。在20、40、55、75和92%的相对湿度（RH）下，左旋葡聚糖颗粒的测定γ值分别为<0.01、0.01 ± 0.01、0.05 ± 0.01、0.09 ± 0.02和0.13 ± 0.03，而PSL颗粒的γ值分别为0.01 ± 0.01、0.02 ± 0.01、0.05 ± 0.01、0.09 ± 0.02和0.13 ± 0.03。在相对湿度为22%、58%和92%时分别为0.03 ± 0.01。讨论了左旋葡聚糖和PSL颗粒对RH的吸收依赖性。
The uptake coefficient(γ) of HO2 for submicrometer aerosol particles of levoglucosan and polystyrene latex (PSL) under ambient conditions (760 Torr and 296 ± 2 K) have been investigated using an aerosol flow tube (AFT) coupled with a chemical conversion/laser-induced fluorescence (CC/LIF) technique. Determined γ values for levoglucosan particles were <0.01, 0.01 ± 0.01, 0.05 ± 0.01, 0.09 ± 0.02, and 0.13 ± 0.03, at relative humidities (RHs) of 20, 40, 55, 75, and 92%, respectively, while the γ values for PSL particles were 0.01 ± 0.01, 0.02 ± 0.01, and 0.03 ± 0.01 at RHs of 22, 58, and 92%, respectively. The dependence of HO2 uptake on RH by levoglucosan and PSL particles is discussed.