{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["8(12)"],"submitter":["De Haan DO"],"pubmed_abstract":["Hydroxyacetone (HA) is an atmospheric oxidation product of isoprene and other organic precursors that can form brown carbon (BrC). Measured bulk aqueous-phase reaction rates of HA with ammonium sulfate, methylamine, and glycine suggest that these reactions cannot compete with aqueous-phase hydroxyl radical oxidation. In cloud chamber photooxidation experiments with either gaseous or particulate HA in the presence of the same N-containing species, BrC formation was minor, with similar mass absorption coefficients at 365 nm (<0.05 m<sup>2</sup> g<sup>-1</sup>). However, rapid changes observed in aerosol volume and gas-phase species concentrations suggest that the lack of BrC was not due to slow reactivity. Filter-based UHPLC/(+)ESI-HR-QTOFMS analysis revealed that the SOA became heavily olig"],"journal":["ACS earth & space chemistry"],"pagination":["2574-2586"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC11664653"],"repository":["biostudies-literature"],"pubmed_title":["Kinetics and Oligomer Products of the Multiphase Reactions of Hydroxyacetone with Atmospheric Amines, Ammonium Sulfate, and Cloud Processing."],"pmcid":["PMC11664653"],"pubmed_authors":["Rafla MA","Pennington EA","Welsh HG","De Haan AC","Cazaunau M","Hawkins LN","Cui T","De Haan DO","Pangui E","Andretta AD","Symons MA","Doussin JF","Le C","Rodriguez AA","Surratt JD"],"additional_accession":[]},"is_claimable":false,"name":"Kinetics and Oligomer Products of the Multiphase Reactions of Hydroxyacetone with Atmospheric Amines, Ammonium Sulfate, and Cloud Processing.","description":"Hydroxyacetone (HA) is an atmospheric oxidation product of isoprene and other organic precursors that can form brown carbon (BrC). Measured bulk aqueous-phase reaction rates of HA with ammonium sulfate, methylamine, and glycine suggest that these reactions cannot compete with aqueous-phase hydroxyl radical oxidation. In cloud chamber photooxidation experiments with either gaseous or particulate HA in the presence of the same N-containing species, BrC formation was minor, with similar mass absorption coefficients at 365 nm (<0.05 m<sup>2</sup> g<sup>-1</sup>). However, rapid changes observed in aerosol volume and gas-phase species concentrations suggest that the lack of BrC was not due to slow reactivity. Filter-based UHPLC/(+)ESI-HR-QTOFMS analysis revealed that the SOA became heavily olig","dates":{"release":"2024-01-01T00:00:00Z","publication":"2024 Dec","modification":"2025-04-04T20:28:54.118Z","creation":"2025-04-04T20:28:54.118Z"},"accession":"S-EPMC11664653","cross_references":{"pubmed":["39720219"],"doi":["10.1021/acsearthspacechem.4c00237"]}}