Polycyclic Aromatic Hydrocarbons in Soil and Vegetation of Niger Delta, Nigeria: Ecological Risk Assessment

Table 5

Isomeric ratio and the total index of soil from different locations in the Niger Delta, Nigeria.

Compounds	Uyo	Choba	Khana	Yenagoa	Eleme	Trans-Amadi
Flt/(Flt + Pyr)	0.43	0.54	1.00	0.74	0.70	0.44
Ant/(Ant + Phen)	0.87	0.48	0.50	0.01	0.50	0.32
Phen/Ant	0.13	1.14	1.00	11.00	1.02	2.16
LMW/HMW	1.64	1.41	0.00	0.64	0.84	0.88
BaA/(BaA + Chry)	0.27	0.37	0.50	0.62	0.21	0.89
IndP/(IndP + BghiP)	0.51	0.29	0.50	0.09	0.89	0.13
Total index	12.4	8.69	10.1	5.531	9.52	8.96