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Table 3 Correlation matrix showing the relationship between the trace metal and surface sediment properties (number: 5, threshold value of relation coefficient at a 95% confidence level: 0.878)

From: Heavy metal accumulation during the last 30 years in the Karnaphuli River estuary, Chittagong, Bangladesh

 

Mz

TOC

Al

Cr

Cu

Ni

Pb

Zn

Mz

1.000

       

TOC

0.772

1.000

      

Al

−0.887

−0.443

1.000

     

Cr

−0.924

−0.568

0.914

1.000

    

Cu

−0.974

−0.854

0.782

0.819

1.000

   

Ni

−0.950

−0.536

0.963

0.943

0.877

1.000

  

Pb

0.008

−0.272

−0.134

−0.362

0.192

−0.100

1.000

 

Zn

−0.872

−0.650

0.784

0.962

0.778

0.830

−0.451

1.000