To determine the concentration of nitrate ions in environmental samples using cyclic voltammetry (CV), a technique that measures the current response of an electrochemical cell to a varying potential.

Procedure

1. Potential versus time program illustrating the forward and reversed linear potential ramp for cyclic voltammetry.
2. One milliliter (mM) of nitrite is added to a 25 or 50 milliliter (mL) PBS solution.
3. A cyclic voltammetry measurement with a scan rate of 50 mV/s will be made between 0 and 1.2 V.
4. At about 1.0 V, the nitrite oxidation peak is seen. CV was first recorded without nitrite being added to PBS. and after that, CV recorded PBS solution containing nitrite.
5. In conclusion, the distinct peak of nitrite oxidation was visible by comparison. in order to gauge the various nitrite concentrations.
6. The technique of linear sweep voltammetry was effective.