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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
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
  1. Extraction method: principal component analysis
  2. a3 components extracted
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