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Apr 7
1. Electrochemical cell: The main component of an electrochemical detector is the electrochemical cell, which consists of an anode and a cathode separated by an electrolyte solution. The analyte is oxidized or reduced at the electrode surface, generating a current that is proportional to the concentration of the analyte.
2. Working electrode: The working electrode is where the electrochemical reaction takes place. It is typically made of a conductive material such as glassy carbon, platinum, or gold.
3. Reference electrode: The reference electrode provides a stable potential against which the working electrode potential can be measured. Common reference electrodes include Ag/AgCl and saturated calomel electrodes.
4. Counter electrode: The counter electrode completes the electrical circuit in the electrochemical cell and helps to maintain a constant current flow during the electrochemical reaction.
5. Electrolyte solution: The electrolyte solution is a conductive medium that allows ions to move between the electrodes during the electrochemical reaction. It also helps to maintain a stable potential at the electrodes.
6. Detector electronics: The detector electronics are responsible for measuring the current generated by the electrochemical reaction and converting it into a signal that can be displayed or recorded.
7. Flow cell: In liquid chromatography, the ECD is often integrated into a flow cell, which allows the analyte to be continuously introduced into the electrochemical cell for detection. The flow cell may also contain a reference electrode and a counter electrode.
2. Working electrode: The working electrode is where the electrochemical reaction takes place. It is typically made of a conductive material such as glassy carbon, platinum, or gold.
3. Reference electrode: The reference electrode provides a stable potential against which the working electrode potential can be measured. Common reference electrodes include Ag/AgCl and saturated calomel electrodes.
4. Counter electrode: The counter electrode completes the electrical circuit in the electrochemical cell and helps to maintain a constant current flow during the electrochemical reaction.
5. Electrolyte solution: The electrolyte solution is a conductive medium that allows ions to move between the electrodes during the electrochemical reaction. It also helps to maintain a stable potential at the electrodes.
6. Detector electronics: The detector electronics are responsible for measuring the current generated by the electrochemical reaction and converting it into a signal that can be displayed or recorded.
7. Flow cell: In liquid chromatography, the ECD is often integrated into a flow cell, which allows the analyte to be continuously introduced into the electrochemical cell for detection. The flow cell may also contain a reference electrode and a counter electrode.
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