Research Article
Multivariate Analysis of Metal Levels in Paddy Soil, Rice Plants, and Rice Grains: A Case Study from Shakargarh, Pakistan
Table 5
Correlation coefficient matrix for metal levels in different media ().
| | Fe(s) | Co(s) | Ni(s) | Cd(s) | Pb(s) | Cr(s) |
| | Fe(p) |
0.406
|
−0.240
|
0.342
|
−0.177
|
0.358
|
0.301
| | Co(p) |
−0.182
|
0.488
|
−0.597
|
−0.498
|
−0.602
|
−0.437
| | Ni(p) |
0.535
|
−0.507
|
0.557
|
0.412
|
0.487
|
0.604
| | Cd(p) |
−0.031
|
−0.128
|
0.063
|
0.180
|
0.080
|
−0.149
| | Pb(p) |
0.672
|
−0.799
|
0.815
|
0.696
|
0.604
|
0.889
| | Cr(p) |
0.783
|
−0.809
|
0.792
|
0.653
|
0.646
|
0.904
|
| | Fe(s) | Co(s) | Ni(s) | Cd(s) | Pb(s) | Cr(s) |
| | Fe(g) |
0.400
|
−0.209
|
0.048
|
0.565
|
−0.332
|
0.165
| | Co(g) |
−0.535
|
0.566
|
−0.599
|
−0.195
|
−0.604
|
−0.378
| | Ni(g) |
0.270
|
−0.222
|
0.348
|
0.256
|
0.596
|
0.444
| | Cd(g) |
−0.457
|
0.481
|
−0.338
|
−0.429
|
−0.427
|
−0.323
| | Pb(g) |
0.312
|
−0.407
|
0.631
|
0.059
|
0.672
|
0.463
| | Cr(g) |
−0.259
|
0.082
|
0.166
|
0.078
|
0.130
|
0.129
|
| | Fe(g) | Co(g) | Ni(g) | Cd(g) | Pb(g) | Cr(g) |
| | Fe(p) |
−0.066
|
0.076
|
0.237
|
0.221
|
0.161
|
0.013
| | Co(p) |
−0.290
|
0.072
|
−0.353
|
0.114
|
−0.318
|
−0.500
| | Ni(p) |
0.033
|
−0.030
|
0.415
|
0.170
|
0.250
|
0.242
| | Cd(p) |
−0.211
|
0.399
|
−0.517
|
−0.146
|
−0.346
|
−0.398
| | Pb(p) |
0.294
|
0.016
|
0.212
|
0.104
|
0.325
|
0.409
| | Cr(p) |
−0.252
|
0.109
|
−0.428
|
0.094
|
0.049
|
−0.303
|
|
|
r-values are significant at ±0.282 at level; s: soil, p: rice plant, and g: rice grain.
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