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Table 4 Correlation matrix of trace metals in stream sediments from the lower Lom basin at p < 0.05 (N = 55)

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

  Sc V Cr Mn Fe Co Ni Cu Zn As Se Cd Hg Pb pH
Sc 1.00               
V 0.28 1.00              
Cr 0.19 0.98 1.00             
Mn 0.12 0.09 0.09 1.00            
Fe − 0.05 − 0.02 − 0.02 0.69 1.00           
Co 0.08 0.91 0.94 0.06 − 0.03 1.00          
Ni 0.20 0.98 0.99 0.09 − 0.02 0.93 1.00         
Cu 0.76 0.34 0.24 − 0.08 − 0.18 0.10 0.26 1.00        
Zn 0.70 0.32 0.23 − 0.05 − 0.21 0.08 0.26 0.96 1.00       
As 0.33 0.79 0.74 0.04 − 0.07 0.68 0.76 0.40 0.38 1.00      
Se 0.30 0.71 0.70 0.22 0.14 0.65 0.70 0.32 0.32 0.35 1.00     
Cd 0.52 0.33 0.27 0.15 − 0.05 0.25 0.27 0.38 0.41 0.44 0.16 1.00    
Hg 0.81 0.21 0.10 0.21 0.07 0.02 0.13 0.77 0.71 0.27 0.37 0.42 1.00   
Pb 0.65 0.65 0.54 − 0.08 − 0.16 0.39 0.57 0.85 0.82 0.63 0.51 0.47 0.67 1.00  
pH − 0.22 − 0.46 − 0.46 0.08 0.06 − 0.41 − 0.50 − 0.31 − 0.34 − 0.40 − 0.48 − 0.18 − 0.18 − 0.42 1.00
  1. N number of sampling sites