Volatile organic compounds (VOCs) are important precursors for secondary organic aerosol (SOA) formation. As a significant aromatic compound of VOC, 1,3,5-trimethylbenzene (1,3,5-TMB, C9H12) mainly comes from vehicle exhaust, solvent use and industrial emissions. The oxidation reaction of 1,3, 5-trimethylbenzene is mainly initiated by hydroxyl radical (OH) in atmosphere.
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Source: Phys.org