Peroxyacetyl Nitrate (PAN) in the Atmosphere: A Comprehensive Review of Chemistry, Measurements, and Chemical-Transport Implications

Callum Flowerday; Jaron C. Hansen

doi:10.1039/d6ea00017g

January 1, 2026Environmental Science AtmospheresOpen Access

Peroxyacetyl Nitrate (PAN) in the Atmosphere: A Comprehensive Review of Chemistry, Measurements, and Chemical-Transport Implications

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Key Points

This review seeks to summarize the chemistry of peroxyacetyl nitrate and its impact on atmospheric conditions.
Reviewed literature on peroxyacetyl nitrate formation and measurements.
Analyzed the role of volatile organic compounds and nitrogen dioxide in photochemical reactions.
Explored the chemical-transport implications of peroxyacetyl nitrate in the atmosphere.
Identified significant pathways for peroxyacetyl nitrate formation through the oxidation of VOCs.
Highlighted the challenges in measuring ambient levels of peroxyacetyl nitrate.
Discussed implications for air quality and climate models due to its role as a secondary pollutant.

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Implication

Comprehensive review examines peroxyacetyl nitrate chemistry and transport implications in the atmosphere.

Abstract

Peroxyacetyl nitrate (PAN) is a secondary pollutant formed through the photochemical oxidation of volatile organic compounds (VOCs) in the presence of nitrogen dioxide (NO 2 ). Since its identification in 1956, PAN...

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Flowerday et al. (2026) studied this question.

synapsesocial.com/papers/6a056824a550a87e60a20904 https://doi.org/10.1039/d6ea00017g

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Peroxyacetyl Nitrate (PAN) in the Atmosphere: A Comprehensive Review of Chemistry, Measurements, and Chemical-Transport Implications

Key Points

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Abstract

Discussion

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Peroxyacetyl Nitrate (PAN) in the Atmosphere: A Comprehensive Review of Chemistry, Measurements, and Chemical-Transport Implications

Key Points

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Abstract

Discussion

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