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Table 2 Loadings of variables on VARIMAX rotated factors of the variables and factor scores for sites

From: Risk assessment of eight metals and their mixtures to aquatic biota in sediments with diffusive gradients in thin films (DGT): a case study in Pearl River intertidal zone

Loadings Factor scores
Metal F1 F2 F3 F4 Site F1 F2 F3 F4
Cd 0.12 0.77  − 0.12 0.54 S1 0.97 0.43 0.17  − 2.33
Pb  − 0.02 0.86 0.17  − 0.12 S2  − 0.16 3.11  − 0.55 0.55
Ni 0.63 0.62  − 0.17 0.19 S3 0.92 1.09  − 1.56  − 0.18
Cu 0.09 0.05 0.01 0.97 S4 1.61 0.21  − 0.51  − 1.37
Zn 0.27 0.82  − 0.27  − 0.01 S5  − 0.70  − 0.91  − 1.10  − 0.67
Co 0.75 0.54  − 0.08 0.14 S6  − 0.92  − 0.61  − 1.48  − 0.14
Fe 0.85 0.26  − 0.03  − 0.16 S7 1.33  − 0.13 0.76 0.17
Mn 0.82  − 0.07 0.37 0.22 S8 0.53  − 0.31 0.33 0.63
OM 0.68  − 0.13 0.52 0.39 S9  − 1.37  − 0.93  − 1.49  − 0.45
CaCO3  − 0.07 0.04 0.90  − 0.07 S10 0.47  − 0.31  − 0.42 1.30
MZ 0.25  − 0.15 0.88 0.04 S11 0.04  − 0.50 0.41 1.29
      S12 1.16  − 0.52 0.58  − 0.52
      S13  − 1.12 0.27  − 0.69 0.27
      S14 0.06  − 0.42 0.65  − 0.25
      S15  − 0.90 0.43  − 0.33  − 0.06
      S16 0.93  − 1.07  − 0.14 2.45
      S17 0.18  − 0.65  − 0.41  − 0.07
      S18  − 0.43 1.83 1.19 0.88
      S19  − 1.83  − 0.36 1.24  − 0.43
      S20 0.61  − 0.78 1.33  − 0.49
      S21  − 1.38 0.12 2.01  − 0.58
  1. OM: organic matter; MZ: median grain size