Table 2 Elemental analysis of heteroatoms of resin and asphlatene fractions.

From: Ionic liquids adsorption and interfacial tension reduction for synthetic resinous and asphaltenic oils: salinity and pH effects

H/C ratio

wt % of heteroatoms of resin and asphaltene fractions

Fractions

Total acid number

S, O and N

S

O

N

1.12

11.01

3.71

7.30

0.00

Asphaltene

0.56

1.44

10.35

6.59

3.76

0.00

Resin

0.67

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