Table 3.
Limit of quantification for Fe and Zn for each of the crops
| Instrument | Crop | Fe (mg kg–1) | Zn (mg kg–1) |
|---|---|---|---|
| Oxford Instruments | Maize | 9.8 | 8.8 |
| Beans | 18.6 | 9.5 | |
| Cowpea | 18.5 | 9.7 | |
| Bruker | Maize | 11.3 | 5.9 |
| Beans | 16.3 | 8.5 | |
| Cowpea | 17.3 | 8.8 |
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