Production of the radicals in the ozonolysis of ethene: A chamber study by FT-IR and PERCA

The ozonolysis of ethene in dry synthetic air at atmospheric pressure and room temperature (298 ± 2) K was investigated in a 6065-L reaction chamber by in situ analysis of stable species by FTIR and of total peroxy radicals PO2 (PO2 = HO2 + RO2) by a chemical amplifier instrument. The yields of radical production were determined based on steady state concentrations of the peroxy radicals and the partitioning between HO2 and RO2 derived from model simulations. The radical yield is 0.38 ± 0.02 for HO2 and 0.45 ± 0.03 for PO2.