A Novel Technique to Determine the Rate Constants for the Gas-phase Reactions of Low-volatile Compounds with OH Radical Using a Relative-rate Method in CCl_4 Liquid Phase-system

摘要

For low-volatile aromatic compounds,a good linear relationship was found between the rate-constant ratio for the liquid-phase reaction with NO_3 radical in CCl_4 and that for the gas-phase reaction with OH radical when naphthalene was employed as a reference compound.Based on the relationship,the rate constants for the OH radical reaction have been successfully determined for fluoranthene and pyrene,which are important airborne polycyclic aromatic compounds.