Fig. 2: Elemental composition of LS-HFO and MGO and its dependency of photochemical age.
From: The impact of photochemical aging on secondary aerosol formation from a marine engine
A, B show a triangle plot as first published by Ng et al.35 illustrating the f43 and f44 of the organic aerosol (OA). A Shows the impact of aging on these two fractions for LS-HFO and B shows the same for MGO. The photochemical age of the aerosol is illustrated by color as seen on the right. C, D illustrate a Van Krevelen plot36,38 with hydrogen to carbon ratio on the y axis and oxygen to carbon ratio on the x axis, showing the chemical composition of the OA: the OA regression line is shown with dotted lines, and the dashed lines highlight the area where ambient aerosol typically fall within.
