“…As shown in Tables S1 and S2, 0.23, 0.14, 0.28, and 0.32 mL of KOH solution are consumed by the titration solvents of methylbenzene, isopropanol, and water ( V methylbenzene / V isopropanol / V water = 100:99:1), absolute ethanol and water ( V absolute ethanol / V water = 99:1), isopropanol and water ( V isopropanol / V water = 99:1), and cyclohexane, isopropanol, and water ( V cyclohexane / V isopropanol / V water = 100:99:1), respectively. Note that in the titration solvents, the organic solvents are used to extract the organic acids in the jet fuel, such as naphthenic acids, and the water is used to extract the water-soluble acids. − Meanwhile, the organic solvents can also improve the solubility of water in the jet fuel because the hydrocarbon chains of organic solvents interact with the fuel physicochemically, and the hydroxyl group forms hydrogen bonds with water molecules. , …”