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Table 3 Correlation matrix of heavy metal in the vegetables

From: Health risk assessment and heavy metal contamination levels in vegetables from Tamale Metropolis, Ghana

Metal

Cd

Cr

Pb

Mn

Fe

Zn

Cu

Cd

1

0.23

0.18

−0.45a

0.17

−0.05

0.11

Cr

 

1

0.33

−0.01

0.46a

0.08

0.27

Pb

  

1

0.07

0.53b

0.08

0.54b

Mn

   

1

0.11

0.01

−0.15

Fe

    

1

0.20

0.42a

Zn

     

1

0.06

Cu

      

1

  1. aCorrelation is significant at the 0.05 level (2-tailed)
  2. bCorrelation is significant at the 0.01 level (2-tailed)