The Scientific World Journal / 2013 / Article / Tab 7

Research Article

Assessing the Ecological Risk of Polycyclic Aromatic Hydrocarbons in Sediments at Langkawi Island, Malaysia

Table 7

Rotated component loadings of the principal components (PCs) for PAH composition in the sediment of Langkawi Island.

PAHsPC1PC2PC3PC4PC5

Naphthalene0.87
1-Methylnaphthalene0.550.35
2-Methylnaphthalene0.330.490.49
Acenaphthylene0.97
Acenaphthene0.82
Fluorene0.87
Phenanthrene0.90
Anthracene0.62
Fluoranthene0.77
Pyrene0.96
Benzo[a]anthracene0.610.39
Chrysene0.89
Benzo[b]fluoranthene0.91
Benzo[k]fluoranthene0.86
Benzo[a]pyrene0.90
Indeno[123-cd]pyrene0.87
Dibenzo[ah]anthracene0.86
Benzo[ghi]perylene0.86
Explained variance (%)21.819.517.411.811.7

Rotation method: Varimax with Kaiser Normalization.
—: PCA loading values lower than 0.3 are not presented.

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