Bulletin of the National Research Centre

Table 5 The rotated component matrix, eigenvalues, and loadings of PAH concentrations

From: Ecological risk assessment of the levels of polycyclic aromatic hydrocarbons in soils of the abandoned sections of Orji Mechanic Village, Owerri, Imo State, Nigeria

Parameters	Components
Parameters	1	2	3
Eigenvalues	5.352	3.483	3.114
Variance %	36.560	26.332	22.457
Cumulative %	36.560	62.892	85.349
Nap	0.921	− 0.151	− 0.117
Apt	− 0.039	0.555	− 0.147
Aph	− 0.007	− 0.394	0.903
Flu	0.310	− 0.230	0.830
Phe	0.082	0.725	0.644
Ant	0.421	− 0.575	0.411
Fla	0.405	0.863	0.061
Pyr	0.816	0.285	0.375
Ban	0.886	− 0.318	0.052
Chy	0.562	0.780	− 0.099
Bbf	0.870	0.384	− 0.280
Bkf	0.956	− 0.240	− 0.127
Indp	0.168	− 0.328	− 0.823
Dbh	0.768	− 0.491	− 0.250

Extraction method: principal component analysis
^a3 components extracted

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