Relative rate kinetics aqueous sulfate radical reaction with some atmospherically relevant compounds

The sulfate anion radical (SO4)  is a reactive oxidant formed in
the autoxidation chain of sulfur dioxide. Recently, other formation
pathways to SO4 for have been reported. This work investigated the
second-order rate coefficients for the aqueous oxidation of some important
organic aerosol compounds by the aqueous SO4 oxidation (kSO4).
2-methyltetrol, 2-methyl-1,2,3-trihydroxy-4-sulfate,
2-methyl-1,2-dihydroxy-3-sulfate, 1,2-dihydroxyisoprene,
2-methyl-2,3-dihydroxy-1,4-dinitrate, 2-methyl-1,2,4-trihydroxy-3-nitrate,
2-methylglyceric acid and 2-methylglycerate,  lactic acid and
lactate, and pyruvic acid and pyruvate. The rate coefficients of unknowns
are determined against that of erythritol in pure water in a temperature
range of 298 – 322 K. The decays of each reagent were measured with
nuclear magnetic resonance (NMR) and high-performance liquid
chromatography-high resolution mass spectrometry
(HPLC-HRMS). Incorporations of additional SO4 reactions into
models may aid in the understanding of organosulfate formation, radical
propagation, and aerosol mass sinks.