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1922878 
Journal Article 
Trace metals in crude oils and beach tars from Nigerian coastline 
Asuquo, FE; Morah F, NI; Nya, AE; Ehrhardt, ME 
1995 
1 
Indian Journal of Marine Sciences
ISSN: 0379-5136 
BIOSIS/95/16252 
24 
1 
16-18 
English 
WOS:A1995QM62300004 
BIOSIS COPYRIGHT: BIOL ABS. Concentrations of six metals (Pb, V, Ni, Fe, Mn and Cu) in Nigerian crude oils and beach tars (tar balls) were studied. The metal concentrations were generally higher in tar balls than in the crude oils. Vanadium was most abundant metal in both, whereas manganese and lead were the least abundant metals in the tar and oils respectively. Application of metal ratios especially Vi and V/Ni + V ratios, for tentative source identification indicates that the beach tar originates from a reducing environment (high V/Ni) and less mature (high V/Ni + V) than the reference oil samples.