Research Article
Physico-Chemical Characteristics and Level of Some Selected Metal in Edible Oils
Table 3
Instrument calibration standard solution and their correlation coefficients.
| | Metals | Stock solution (mg/L) | Intermediates solution (mg/L) | Calibration solution (mg/L) | Correlation coefficient () |
| | Na | 1000 | 100 | 1, 2, 4, 8, 16 | 0.9999 | | K | 1000 | 100 | 1, 2, 4, 8, 16 | 0.9977 | | Cu | 1000 | 100 | 0.5, 1, 2, 4, 8 | 0.9989 | | Zn | 1000 | 100 | 0.5, 1, 2, 4, 8 | 0.9999 | | Fe | 1000 | 100 | 1, 2, 4, 8, 16 | 0.9998 |
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