The C₅-Alkene Triol Conundrum: Structural Characterization and Quantitation of Isoprene-Derived C₅H₁₀O₃ Reactive Uptake Products.

ABSTRACT: 2-Methyltetrols and C₅H₁₀O₃ compounds, referred to as "C₅-alkene triols," are chemical tracers used to estimate isoprene-derived epoxydiol (IEPOX) contributions to atmospheric PM_2.5. For nearly two decades, "C₅-alkene triol" molecular structures and PM_2.5 mass contributions remain uncertain, and their origin as analytical artifacts is unclear. Thus, we synthesized C₅H₁₀O₃ reactive uptake product candidates (3-methyltetrahydrofuran-2,4-diol and 3-methylenebutane-1,2,4-triol) and investigated their behavior under conventional gas chromatography/electron impact-mass spectrometry (GC/EI-MS) with prior trimethylsilylation and, in parallel, by non-destructive hydrophilic-interaction liqu

SUBMITTER: Frauenheim M 

PROVIDER: S-EPMC11770847 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature