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Influence of CTAB, HA, and FA on the Cd(II) voltammetric signal using the procedure with and without preliminary mixing with Amberlite XAD-7 resin. Concentration of Cd(II) was 5 × 10−8 M.
| Organic Substance | Maximum Allowable Concentration of Organic Substances That Does Not Interfere with the Cd(II) Signal (ppm) | |
|---|---|---|
| Without Mixing with Resin | With Mixing with Resin | |
| CTAB | 1 | 20 |
| HA | 1 | 10 |
| FA | 1 | 20 |
