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Table 5 Factor analysis with varimax rotation for 14 trace metals in stream sediments from the lower Lom Basin (N = 55)

From: Regional geochemical baseline concentration of potentially toxic trace metals in the mineralized Lom Basin, East Cameroon: a tool for contamination assessment

Variable Factor 1 Factor 2 Factor 3 Communality
Ni 0.983 0.117 0.018 0.981
Cr 0.982 0.091 0.022 0.974
V 0.965 0.206 0.021 0.974
Co 0.958 − 0.041 0.019 0.920
As 0.749 0.319 − 0.064 0.668
Se 0.705 0.269 0.240 0.627
pH − 0.529 − 0.244 0.138 0.358
Cu 0.154 0.928 − 0.173 0.914
Zn 0.151 0.904 − 0.178 0.871
Hg 0.029 0.897 0.205 0.846
Sc 0.095 0.879 0.080 0.788
Pb 0.487 0.790 − 0.162 0.888
Cd 0.245 0.537 0.092 0.357
Mn 0.060 0.066 0.919 0.853
Fe − 0.025 − 0.085 0.892 0.803
Variance 5.477 4.478 1.868 11.823
% Variance 36.515 29.851 12.451 78.817
  1. The geochemical data was log transformed prior to factor analysis. Three factors were extracted
  2. Factor loadings ≥ ± 0.500 are in italics
  3. N number of sampling sites