Research Article

High-Field (3.4 T) ENDOR Investigation of Asphaltenes in Native Oil and Vanadyl Complexes by Asphaltene Adsorption on Alumina Surface

Table 3

Concentrations (C) оf FR and VP in asphaltenes and the adsorbed samples from the X-band measurements.

Sample, spin/g, spin/g

Asphaltenes1.4·10191.4·101810.0
Q14·10178·10165.0
Q101·10172.6·10163.8