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. 2021 Sep 10;6(37):24256–24268. doi: 10.1021/acsomega.1c04224

Table 4. Structural Parameters of Asphaltenes According to FTIR Analysis.

  aliphatic index aromatic index sulphoxide index
As-145 0.047 1.315 0.066
As-229 0.010 1.349 0.118
As-3 0.048 0.362 0.128
As-429 0.093 0.307 0.129
As-545 0.039 0.207 0.187
As-645 0.013 0.388 0.111