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- W3025052647 abstract "The chemistry of trace sulfur gases in planetary organic haze formation is poorly understood, though both are ubiquitous in planetary atmospheres. Here, we perform laboratory studies to explore how the addition of trace amounts of H2S (0.5–5 ppmv) affects organic aerosol produced from ultraviolet photochemistry of CH4 in N2. We analyze the aerosol product composition and size in real time. Inclusion of trace amounts of H2S in the precursor mixture significantly enhances the formation of organic aerosol mass and the particle effective density, both of which increase as a function of initial H2S concentration and in the absence of an additional carbon source. We further present evidence that the addition of trace H2S to the precursor mixtures leads to the formation of organosulfur compounds. Their inclusion in the aerosol-phase contributes to the organic aerosol mass enhancement. Thiyl-alkene chemistry is proposed as a possible organosulfur formation mechanism. In contrast to previous assumptions that sulfur and carbon chemistry occur largely independently of each other, these results suggest a coupling between the two chemistries. This coupling has potential impacts on organic haze and atmospheric sulfur chemistry in planetary atmospheres." @default.
- W3025052647 created "2020-05-21" @default.
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- W3025052647 date "2020-05-11" @default.
- W3025052647 modified "2023-10-01" @default.
- W3025052647 title "Impact of Hydrogen Sulfide on Photochemical Haze Formation in Methane/Nitrogen Atmospheres" @default.
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- W3025052647 doi "https://doi.org/10.1021/acsearthspacechem.0c00086" @default.
- W3025052647 hasPublicationYear "2020" @default.
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