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Table 2 Correlation matrix coefficient of 18 soil samples

From: Assessment of soil quality for agricultural purposes around the Barapukuria coal mining industrial area, Bangladesh: insights from chemical and multivariate statistical analysis

Variables pH Total nitrogen OM K P S Fe As Cu Ni Total alkalinity as CaCO3
pH 1.0           
Total Nitrogen − 0.313 1.0          
OM − 0.496 0.631 1.0         
K 0.001 0.441 0.42 1.0        
P 0.21 0.124 0.351 0.436 1.0       
S 0.136 0.278 0.037 0.213 0.431 1.0      
Fe 0.018 0.047 − 0.086 − 0.034 0.002 − 0.016 1.0     
As − 0.178 − 0.052 − 0.116 − 0.342 − 0.438 0.124 − 0.236 1.0    
Cu − 0.1 − 0.215 0.043 − 0.108 − 0.192 − 0.363 − 0.182 0.142 1.0   
Ni 0.146 0.126 − 0.04 0.449 0.018 0.112 0.147 − 0.09 0.120 1.0  
Total Alkalinity(as CaCO3) 0.969 − 0.347 − 0.552 − 0.02 0.214 0.13 − 0.059 − 0.202 − 0.081 0.192 1.0
  1. Italic values indicate the significant correlation between the various chemical parameters