PC1 explained 78.03% of the total variance and had positive loadings for similar magnitude with As (0.35), Pb (0.35), Cd (0.33), Co (0.34), Mn (0.35), and Ni (0.35), alongside moderately significant contributions from Cr (0.31), Se (0.31), and Cu (0.30) (Fig. 5 ).
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Baseline assessment of sedimentary heavy metals and ecological risks in the high-siltation Gorai River, Bangladesh.
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