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Effects of the fuels on total mass concentrations of diesel aerosols in diluted exhaust (dilution ratio of 30): (a) gravimetric DPM, total carbon (TC), and elemental carbon (EC) for Engine 1, (b) gravimetric DPM, TC, and EC for Engine 2, (c) changes in total mass concentrations for Engine 1, and (d) changes in total mass concentrations for Engine 2.
