Table 4 Correlation analysis between levels of endotoxins, Al, Cr, Fe, Mn, Ni, Zn, and Pb.

From: Correlation between levels of airborne endotoxin and heavy metals in subway environments in South Korea

 

Endotoxin

Al

Cr

Fe

Mn

Ni

Zn

Pb

Endotoxin

1.000

0.246

0.479*

0.441*

0.336*

0.571**

0.113

0.228

Al

 

1.000

0.474*

0.630**

0.589**

0.691**

0.406*

0.785**

Cr

  

1.000

0.610**

0.602**

0.780**

0.504**

0.355*

Fe

   

1.000

0.843**

0.800**

0.255

0.670**

Mn

    

1.000

0.760**

0.568**

0.731**

Ni

     

1.000

0.442*

0.675**

Zn

      

1.000

0.452*

Pb

       

1.000

  1. *p < 0.05; **p < 0.001.
Back to article page