Abstract

In predicting oxidants concentration, the most important fact is to select a suitable photochemical reaction mechanism. Sensitivity analysis of and other important photochemical oxidants concentrations was conducted by using CBM-IV model. The predicted oxidants concentration was considerably related with the initial concentration of formaldehyde, , RH and RCHO. As the initial concentration of formaldehyde increased, concentration of increased. concentration was proportional to the ratio. When the initial concentrations of RH and RCHO were high, photochemical reaction was more reactive, including more rapid conversion of NO to and increased oxidants. Also, the sensitivities of ozone formation to rate constants, in the photolysis were studied.

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