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Summarize recent advances in understanding the mechanisms, kinetic scaling relationships, and multiscale modeling of heterogeneous sulfur dioxide oxidation at aerosol air-water interfaces.

November 12, 2025Annual Review of Physical Chemistry

Sulfur Chemistry at the Air-Water Interface

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PLPai LiuBeijing Institute of Technology QHQishen HuangBeijing Institute of Technology TLTing LeiShanghai University

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Overview

Review reveals rapid sulfur dioxide oxidation occurs primarily at aerosol air-water interfaces during urban pollution, highlighting a fundamental shift in atmospheric sulfur chemistry.

Key Points

Summarize recent advances in understanding the mechanisms, kinetic scaling relationships, and multiscale modeling of heterogeneous sulfur dioxide oxidation at aerosol air-water interfaces.
Reviewed recent theoretical and experimental literature addressing interfacial versus bulk aqueous oxidation of S(IV).
Evaluated scaling relationships of apparent reaction kinetics used to locate reaction zones experimentally.
Examined multiscale modeling approaches developed to predict and retrieve localized surface reaction kinetics.
Sulfate aerosol formation in severe urban air pollution is driven predominantly by heterogeneous sulfur dioxide conversion at aerosol surfaces rather than in bulk droplet water.
Oxidation rates of S(IV) are substantially elevated at the air-water interface compared to traditional condensed-phase aqueous reactions.
Multiscale models integrated with kinetic scaling laws provide quantitative frameworks to retrieve interfacial reaction kinetics and refine atmospheric sulfur models.

Cite This Study

Liu et al. (2025) studied this question.

synapsesocial.com/papers/6a6f4bf36ceb2bbd16dfa482 https://doi.org/10.1146/annurev-physchem-082324-095359

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November 12, 2025Annual Review of Physical Chemistry

Sulfur Chemistry at the Air-Water Interface

View Full Paper

Ask AI

Bookmark

Authors

PLPai LiuBeijing Institute of Technology QHQishen HuangBeijing Institute of Technology TLTing LeiShanghai University

Discussion

Member takes

Overview

Review reveals rapid sulfur dioxide oxidation occurs primarily at aerosol air-water interfaces during urban pollution, highlighting a fundamental shift in atmospheric sulfur chemistry.

Key Points

Summarize recent advances in understanding the mechanisms, kinetic scaling relationships, and multiscale modeling of heterogeneous sulfur dioxide oxidation at aerosol air-water interfaces.
Reviewed recent theoretical and experimental literature addressing interfacial versus bulk aqueous oxidation of S(IV).
Evaluated scaling relationships of apparent reaction kinetics used to locate reaction zones experimentally.
Examined multiscale modeling approaches developed to predict and retrieve localized surface reaction kinetics.
Sulfate aerosol formation in severe urban air pollution is driven predominantly by heterogeneous sulfur dioxide conversion at aerosol surfaces rather than in bulk droplet water.
Oxidation rates of S(IV) are substantially elevated at the air-water interface compared to traditional condensed-phase aqueous reactions.
Multiscale models integrated with kinetic scaling laws provide quantitative frameworks to retrieve interfacial reaction kinetics and refine atmospheric sulfur models.

Cite This Study

Liu et al. (2025) studied this question.

synapsesocial.com/papers/6a6f4bf36ceb2bbd16dfa482 https://doi.org/10.1146/annurev-physchem-082324-095359

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