Table 7.

Principal component extractions and their loadings.

	PC 1	PC 2	PC 3	PC 4	PC 5
pH	− 0.115	0.583	0.365	− 0.340	0.166
EC	0.495	0.738	0.371	0.016	0.029
TDS	0.497	0.740	0.366	0.016	0.028
Al	0.377	− 0.515	0.150	− 0.443	0.266
Cr	0.511	− 0.149	0.203	0.429	0.494
Mn	− 0.747	0.178	0.353	− 0.022	0.250
Cu	0.301	− 0.484	0.636	0.029	− 0.115
Zn	− 0.884	− 0.017	0.236	0.138	0.123
As	0.312	0.008	-0.507	0.132	0.679
Se	0.328	− 0.232	0.320	0.698	− 0.231
Cd	− 0.726	− 0.127	0.397	0.232	0.267
Pb	0.278	− 0.547	0.498	− 0.404	0.093
Eigenvalue	3.147	2.356	1.819	1.238	1.029
% of Variance	26.226	19.632	15.160	10.320	8.577
Cumulative %	26.226	45.859	61.018	71.338	79.915

Significant values are in bold.