Results for the determination of oxalic acid in real samples (n = 6).
| Samples | Found (mg g−1) | Added (mg g−1) | Total found (mg g−1) | Recovery (%) | RSD (%) |
|---|---|---|---|---|---|
| Tomato 1 | 1.316 | 4.000 | 5.222 | 97.65 | 0.34 |
| 1.000 | 2.369 | 105.3 | 0.29 | ||
| Tomato 2 | 1.351 | 1.000 | 2.351 | 100.0 | 0.32 |
| 0.2500 | 1.613 | 104.8 | 0.14 | ||
| Cherry tomato 1 | 1.633 | 0.7500 | 2.316 | 91.07 | 0.22 |
| 0.3333 | 1.971 | 101.4 | 0.16 |