A Long-Path Fourier Transform Infrared Study of the Kinetics and Mechanism for the HO-Radical Initiated Oxidation of Dimethylmercury

Article abstract of DOI:10.1021/j150642a041

Gaseous and aerosol products formed in the HO-radical initiated reaction of CH3HgCH3 were studied by the long-path FT IR method in the photolysis of CH3HgCH3-C2H5ONO-NO mixtures typically at 10, 10, and 20 ppm each in 700 torr of air at ca. 300 K.The results were consistent with the predominant occurence of the displacement reaction of HO + CH3HgCH3 -> CH3HgOH + CH3 as the primary process.The relative rate constant for the HO-radical reactions of CH3HgCH3 and C2H4 was determined to be k(C3H4)/k(CH3HgCH3) = 0.43 +/- 0.03(?).This value combined with the literature value of k(C2H4) = (8.48 +/- 0.39) X 10^-12 cm³ molecule^-1 s^-1.