Research Article
Flow Injection Photosensitized Chemiluminescence of Luminol with Cu(II)-Rose Bengal: Mechanistic Approach and Vitamin A and C Determination
Table 2
Analytical performance and analyte determination in pharmaceuticals by the proposed method (
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| Figures of merit | Vitamin A | Vitamin C | Rose Bengal |
| Calibration equation [= intensity, = concentration (μg/mL)] | | | | Linear range (μg/mL) | 0.05–15 | 0.01–20 | 0.1–50 | Limit of detection (μg/mL, / = 3) | 0.008 | 0.005 | 0.05 | Sample throughput | 70 | 70 | 30 |
| Pharmaceutical formulations | Proposed method results/ (labeled values) (μg) | Proposed method results/ (labeled values) (mg) | Proposed method results/ (labeled values) (%) |
| Capsules | 210 ± 3/(200) | — | — | Chewable dragee | 9975 ± 5/(9900) | 97 ± 6/(100) | — | Eye drops (0.6 mL) | — | — | 1 ± 0.1/(1) | Injections | 3378 ± 4/(3300) | — | — | Tablets | — | 509 ± 5 mg/(500) | — |
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