The potential effects of ozone formation which would result if the 1985 vehicle fleet were converted from gasoline to ethanol/gasoiine blends were investigated using the EKMA approach. Changes In vehicular emissions were used to calculate changes in ambient HC reactivities and ambient levels of HC, NO x and CO for a number of scenarios. Ozone formation was then modeled for each scenario. Effects on ozone formation were not significant unless the usage of ethanol/gasoline blends resulted in deterioration of the emissions control systems. Ambient NO x /HC ratios were shown to have a significant effect on ozone formation.
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Bailey et al. (1986) studied this question.
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