Electrochemical method for detection, identification, and quantification of analytes, and equipment to perform said method

An electrochemical method for detecting, identifying, and quantifying analytes consisting of inorganic nutrients rich in nitrogen in the form of ammonium/ammonia or nitrite dissolved in a water sample through voltammetry, the method comprising steps of:

• a pre-treatment step by applying a continuous potential between −1,000 mV and 1,000 mV for one or more seconds;
• an equilibrium step lasting one or more seconds;
• an electrical stimulation step of the sample by applying a sweep potential between 0 mV and 2,500 mV for one or more seconds at a frequency of 1 Hz to 20 Hz, with an amplitude range of 0 to 100 mV;
• and
• a characterization step of the analytes by measuring the signals resulting from the oxidation-reduction of the analytes within a range of 0 mV to 2,000 mV.

An electrochemical method for detecting, identifying, and quantifying analytes consisting of inorganic nutrients rich in nitrogen in the form of nitrate dissolved in a water sample through voltammetry, the method comprising steps of:

• a pre-treatment step by applying a continuous potential between −2,000 mV and 2,000 mV for one or more seconds;
• an equilibrium step lasting one or more seconds;
• an electrical stimulation step of the sample by applying a sweep potential between 2,500 mV and 0 mV for one or more seconds at a frequency of 1 Hz to 20 Hz, with an amplitude range of 0 to 100 mV;
• and
• a characterization step of the analytes by measuring the signals resulting from the oxidation-reduction of the analytes within a range of 0 mV to 2,000 mV.

An electrochemical method for detecting, identifying, and quantifying analytes consisting of inorganic nutrients rich in phosphorus such as phosphates in a sample through voltammetry, the method comprising steps of:

• a pre-treatment step by applying a continuous potential between −3,000 mV and 3,000 mV for one or more seconds;
• an equilibrium step lasting one or more seconds;
• an electrical stimulation step (potential) of the sample by applying a sweep potential between 0 mV and 2,000 mV for one or more seconds at a frequency of 1 Hz to 10 Hz, with an amplitude range of 0 to 100 mV;
• and
• a characterization step of the analytes by measuring the signals resulting from the oxidation-reduction of the analytes within a range of 0 mV to 2,000 mV.