This study aimed to investigate the kinetics of the heterogeneous reactions of six biogenic secondary organic aerosol (BSOA) markers of atmospheric interest, i.e. the terebic, terpenylic, cis-pinonic, pinic, 3-methyl-1,2,3-butanetricarboxylic (MBTCA) and β-caryophyllinic acids. For this purpose, these compounds were individually adsorbed onto silica model particles and exposed either to solar irradiation, hydroxyl radicals, or ozone. Marker concentrations extracted from particles were subsequently analyzed by liquid chromatography coupled to quadrupole time-of-flight mass spectrometry (LC-QTOF/MS). Pseudo-first-order rate constants were derived from simulations (using either exponential functions or the tangent slope at t