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The FBRC method performed well for ascorbic acid, gallic acid and BHT.
| Antioxidant compound | Concentration range for ideal linearity (mol/L) | Molar absorptivity L.mol−1.cm−1 | r2 |
|---|---|---|---|
| Ascorbic acid | 1.0×10−6 – 5.0×10−5 | 13445.1 | 0.9979 |
| Gallic acid | 1.0×10−6 – 2.0×10−5 | 76189.4 | 0.9992 |
| BHT | 1.0×10−6 – 8.0×10−5 | 25068.5 | 0.9989 |
