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- W2340481115 abstract "Oxygenated fuels are used in some western mountain valley communities to help in the control of CO during winter inversions. However, it is possible that oxygenated fuel use will increase PM{sub 2.5} concentrations. The oxygen in these fuels may lead to increased concentrations of oxidants. In turn, the concentrations of atmospheric oxidants involved in SO{sub 2} and NO{sub 2} chemistry may increase. This may lead to increased conversion of SO{sub 2} and NO{sub x} to particulate sulfate and nitrate. To explore the possible presence of this enhanced atmospheric chemistry, samples of gas and particulate sulfur and nitrogen oxides were collected in 5/day sample sets during four 3-day inversion episodes at two locations in the urban areas of Utah Valley. Two of the episodes occurred during December 1995 when oxygenated fuels were used in the valley. The last two episodes occurred in February 1996 after the end of oxygenated fuel use on January 15. Fogs were absent during all four episodes. The results indicate that the conversion of SO{sub 2} to sulfate and NO{sub 2} to nitrate are both increased about two-fold during the use of oxygenated fuels, as compared to the non-oxygenated fuel periods. The results, possible chemistry which maymore » be related to the observed differences and implications for attainment of both the present and proposed new PM standard will be presented.« less" @default.
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- W2340481115 date "1997-12-31" @default.
- W2340481115 modified "2023-09-24" @default.
- W2340481115 title "Enhanced formation of sulfate and nitrate associated with the use of oxygenated Fuels" @default.
- W2340481115 hasPublicationYear "1997" @default.
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