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Real sample analysis of SO32− trace in wine samples by DPV technique using CuO/GCE.
| Analysed product | SO32− concentration (mg/100 ml) wine sample | SO32− concentration after addition of 100 mg/100 ml wine solution | Degree of recovery (%) | RSD (%) |
|---|---|---|---|---|
| Wine sample 1 | 37.3 | 136.4 | 100.9 | 3.2 |
| Wine Sample 2 | 34.1 | 135.1 | 99.0 | 4.1 |
