Research Article
Flow Injection Photosensitized Chemiluminescence of Luminol with Cu(II)-Rose Bengal: Mechanistic Approach and Vitamin A and C Determination
Table 1
Selection of variables.
| | Variables | Range studied | Optimum |
| | Pyrophosphate buffer pH (0.01 M) | 8.5–11.0 | 10.25 | | Rose Bengal (M) | 1 × 10−5–2.5 × 10−4 | 1 × 10−4 | | Copper(II) (M) | 1 × 10−4–1 × 10−3 | 5 × 10−4 | | Luminol (NaOH 0.12 M) | 1 × 10−6–1 × 10−5 M | 5 × 10−5 M | | Total flow rate (mL min−1) | 2–10 | 6.0 | | Sample volume (μL) | 60–300 | 60 | | Photoreactor coil length (m) | 0.5–3.0 | 2.0 |
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