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Table 14 Pearson’s correlation matrix

From: Estimation of pollution indices and hazard evaluation from trace elements concentration in coastal sediments of Kerala, Southwest Coast of India

  As Cd Cu Cr Mn Zn Ni Pb Ti Fe MC pH EC (µS/m) OM Silt + clay (%) Sand (%)
As 1.0                
Cd − 0.236 1.0               
Cu 0.231 0.578* 1.0              
Cr 0.049 0.515* 0.699** 1.0             
Mn 0.170 0.567* 0.889** 0.718** 1.0            
Zn 0.156 0.185 0.447 0.694** 0.598** 1.0           
Ni 0.187 0.588* 0.963** 0.738** 0.922** 0.552* 1.0          
Pb − 0.062 0.410 0.573* 0.760** 0.679** 0.295 0.555* 1.0         
Ti 0.053 0.385 0.570* 0.818** 0.633** 0.736** 0.632** 0.484* 1.0        
Fe 0.264 0.444 0.898** 0.745** 0.925** 0.597** 0.886** 0.647** 0.717** 1.0       
MC 0.269 − 0.079 0.102 0.072 .086 0.016 0.129 0.107 − 0.083 0.212 1.0      
pH 0.110 − 0.064 − 0.268 0.073 − 0.085 0.090 − 0.206 0.075 0.015 − 0.005 0.110 1.0     
EC (µS/m) 0.301 0.175 0.513* 0.238 0.346 0.051 0.467 0.121 0.109 0.496 0.705** − 0.072 1.0    
OM − 0.119 0.280 0.489 0.209 0.410 0.004 0.431 0.310 0.305 0.529* 0.035 0.037 0.244 1.0   
Silt + Clay (%) 0.032 0.230 0.574* 0.362 0.477 0.221 0.460 0.374 0.342 0.604** 0.190 − 0.249 0.522* 0.577* 1.0  
Sand (%) 0.134 0.133 0.125 0.006 0.114 0.078 0.184 − 0.111 0.093 0.069 − 0.154 0.084 0.056 − 0.056 − 0.184 1.0
  1. MC: moisture content; EC: electrical conductivity; OM: organic matter content
  2. *Correlation is significant at the 0.05 level (two-tailed)
  3. **Correlation is significant at the 0.01 level (two-tailed)