The HO2 uptake coefficients (γ) for organic submicron aerosol particles were measured using an aerosol flow tube coupled with a chemical conversion/laser-induced fluorescence technique under ambient conditions (760 Torr and 296 ± 2 K) and different values of relative humidity (RH) (28% and 68%). Determined uptake coefficients for succinic, glutaric, adipic, and pimelic acid aerosol particles at 28% RH were 0.07 ± 0.02, 0.07 ± 0.03, 0.02 ± 0.01, and 0.06 ± 0.03, respectively, whereas the γ values for those particles at 68% RH were 0.18 ± 0.07, 0.15 ± 0.04, 0.06 ± 0.01, and 0.13 ± 0.04, respectively. An increase in γ with increasing RH was observed for all the dicarboxylic acids, suggesting a contribution by water amount in the particle, aqueous phase chemistry, and uptake of HO2–H2O. The anomalously low γ values for adipic acid are likely related to its high crystallization RH and thus provide a new clue that the water amount and/or RH have a significant influence on HO2 uptake.

Fumiakzu Taketani

Yugo Kanaya

Hajime Akimoto

International Journal of Chemical Kinetics

作为专门致力于化学动力学的领先档案期刊，国际化学动力学杂志发表气相、凝聚相和聚合物反应动力学以及生化和表面动力学方面的原创研究。该杂志力求成为对简单和复杂系统中的反应动力学进行仔细实验测量的主要档案。该杂志还介绍了应用理论动力学的新进展，并发表了大型动力学模型，以及这些模型中使用的算法和估计。这些包括处理在生物化学、催化和自由基化学中重要的大型反应网络的方法。此外，该杂志还探讨了分子结构与化学反应性之间的定量关系、有机/无机化学与反应机制以及界面反应性化学等主题。

The International Journal of Chemical Kinetics is a leading academic journal dedicated to the field of chemical kinetics, publishing original research on gas-phase, condensed-phase, and polymer reaction kinetics, as well as biochemical and surface kinetics. The journal aims to serve as a key platform for careful experimental measurements of reaction kinetics in both simple and complex systems. Additionally, it presents new advancements in applied theoretical kinetics and publishes large kinetic models along with the algorithms and estimations used in these models. This includes methods for handling significant large reaction networks important in biochemistry, catalysis, and radical chemistry. Furthermore, the journal explores quantitative relationships between molecular structure and chemical reactivity, organic/inorganic chemistry and reaction mechanisms, as well as interfacial reactive chemistry.

国际化学动力学杂志是专注于化学动力学领域的领先学术期刊，发表气相、凝聚相、聚合物反应动力学以及生化和表面动力学方面的原创研究。该杂志致力于成为简单和复杂系统中反应动力学实验测量的重要平台。此外，杂志还介绍了应用理论动力学的新进展，发表大型动力学模型及其相关算法和估计方法。这些研究包括在生物化学、催化和自由基化学中重要的大型反应网络的处理方法。此外，杂志还探讨了分子结构与化学反应性之间的定量关系、有机/无机化学与反应机制，以及界面反应性化学等主题。

Category	Quartile
化学	4
化学, 物理化学	4

Kinetic Studies of Heterogeneous Reaction of HO₂ Radical by Dicarboxylic Acid Particles

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Category	Quartile
CHEMISTRY, PHYSICAL	4

Kinetic Studies of Heterogeneous Reaction of HO2 Radical by Dicarboxylic Acid Particles

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Kinetic Studies of Heterogeneous Reaction of HO₂ Radical by Dicarboxylic Acid Particles