Research Article
Comparative Study of Heavy Metals in Dried and Fluid Milk in Peshawar by Atomic Absorption Spectrophotometry
Table 3
Correlation coefficients of the mineral elements.
| | | Ca | Mg | Cu | Zn | Fe | Mn | Pb | Cd | Cr | Ni |
| Ca | Pearson’s correlation | 1 |
0.684** | 0.502** | 0.732** | 0.729** | 0.466** | 0.767** | 0.373* | 0.771** | 0.798** | Sig. (2-tailed) | | 0.000 | 0.000 | 0.000 | 0.000 | 0.001 | 0.000 | 0.011 | 0.000 | 0.000 |
| Mg | Pearson’s correlation | 0.684** | 1 | 0.214 | 0.693** | 0.485** | 0.266 | 0.657** | 0.173 | 0.722** | 0.550** | Sig. (2-tailed) | 0.000 | | 0.153 | 0.000 | 0.001 | 0.074 | 0.000 | 0.250 | 0.000 | 0.000 |
| Cu | Pearson’s correlation | 0.502** | 0.214 | 1 | 0.423** | 0.521** | 0.547** | 0.469** | 0.194 | 0.512** | 0.460** | Sig. (2-tailed) | 0.000 | 0.153 | | 0.003 | 0.000 | 0.000 | 0.001 | 0.195 | 0.000 | 0.001 |
| Zn | Pearson’s correlation | 0.732** | 0.693** | 0.423** | 1 | 0.639** | 0.267 | 0.670** | 0.460** | 0.821** | 0.570** | Sig. (2-tailed) | 0.000 | 0.000 | 0.003 | | 0.000 | 0.073 | 0.000 | 0.001 | 0.000 | 0.000 |
| Fe | Pearson’s correlation | 0.729** | 0.485** | 0.521** | 0.639** | 1 | 0.303* | 0.480** | 0.492** | 0.681** | 0.730** | Sig. (2-tailed) | 0.000 | 0.001 | 0.000 | 0.000 | | 0.041 | 0.001 | 0.001 | 0.000 | 0.000 |
| Mn | Pearson’s correlation | 0.466** | 0.266 | 0.547** | 0.267 | 0.303* | 1 | 0.516** | 0.064 | 0.326* | 0.378** | Sig. (2-tailed) | 0.001 | 0.074 | 0.000 | 0.073 | 0.041 | | 0.000 | 0.672 | 0.027 | 0.010 |
| Pb | Pearson’s correlation | 0.767** | 0.657** | 0.469** | 0.670** | 0.480** | 0.516** | 1 | 0.257 | 0.729** | 0.735** | Sig. (2-tailed) | 0.000 | 0.000 | 0.001 | 0.000 | 0.001 | 0.000 | | 0.085 | 0.000 | 0.000 |
| Cd | Pearson’s correlation | 0.373* | 0.173 | 0.194 | 0.460** | 0.492** | 0.064 | 0.257 | 1 | 0.488** | 0.433** | Sig. (2-tailed) | 0.011 | 0.250 | 0.195 | 0.001 | 0.001 | 0.672 | 0.085 | | 0.001 | 0.003 |
| Cr | Pearson’s correlation | 0.771** | 0.722** | 0.512** | 0.821** | 0.681** | 0.326* | 0.729** | 0.488** | 1 | 0.746** | Sig. (2-tailed) | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.027 | 0.000 | 0.001 | | 0.000 |
| Ni | Pearson’s correlation | 0.798** | 0.550** | 0.460** | 0.570** | 0.730** | 0.378** | 0.735** | 0.433** | 0.746** | 1 | Sig. (2-tailed) | 0.000 | 0.000 | 0.001 | 0.000 | 0.000 | 0.010 | 0.000 | 0.003 | 0.000 | |
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Correlation significant at the 0.01 level.
*Correlation significant at the 0.05 level.
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