Skip to main content

Table 8 Pearson correlation coefficients between natural radionuclides and elemental concentrations in clay soil samples

From: Determination of radionuclides and elemental composition of clay soils by gamma- and X-ray spectrometry

Variable

K(%)

U(ppm)

Th(ppm)

Fe

Ti

Ca

K

Cu

Zn

Mn

Zr

Ni

Se

Rb

Sr

Nb

Pb

As

K(%)

1

                 

U(ppm)

.499*

1

                

Th(ppm)

.299

.426*

1

               

Fe

-.022

.079

.161

1

              

Ti

-.292

-.296

.001

.574**

1

             

Ca

.170

-.194

-.019

.406*

.215

1

            

K

-.472*

-.366

.103

.157

.244

.486*

1

           

Cu

-.020

.030

.173

.910**

.592**

.229

-.007

1

          

Zn

-.165

-.075

.105

.864**

.499*

.113

.001

.906**

1

         

Mn

-.176

-.071

.014

.913**

.577**

.272

.184

.866**

.858**

1

        

Zr

-.100

-.085

.015

-.198

-.096

.406*

.389

-.263

-.292

-.139

1

       

Ni

-.056

.074

.291

.550**

.239

-.172

-.264

.762**

.775**

.501*

-.369

1

      

Se

.121

.186

.342

.590**

.153

-.140

-.116

.639**

.651**

.616**

-.496*

.534**

1

     

Rb

-.252

-.113

.084

.765**

.446*

-.016

.104

.758**

.823**

.796**

-.305

.546**

.753**

1

    

Sr

-.446*

-.452*

-.194

.216

.454*

.503*

.695**

.062

.077

.317

.417*

-.258

-.149

.165

1

   

Nb

.065

.059

.139

.806**

.328

.204

-.192

.835**

.827**

.779**

-.297

.677**

.671**

.717**

-.104

1

  

Pb

.161

.248

.383

.839**

.397*

.333

-.049

.843**

.783**

.741**

-.149

.678**

.622**

.600**

.031

.816**

1

 

As

.570**

.224

.147

.414*

.067

.591**

-.310

.343

.215

.223

.075

.145

.062

-.016

-.099

.430*

.564**

1

  1. *Significant at the 0.05 level.
  2. ** Significant at the 0.01 level.