Electrochemical Measurement Systems: Difference between revisions
MedLabWIki>Admin Created page with "Types of Electrodes * Glass Electrodes ** H+, Na+, K+, Li+, Ag+ NH4+ * pH Combination Electrodes * Solid State Electrodes ** Cl- * Liquid Ion-Exchange ** K+ (valinomycin binds K+ in centre ring) ** Ca2+ (organo-phosphate salt in PVC) * Compound Gas Electrodes ** pCO2 (Severinghaus CO2 electrode) *** CO2 diffuses past first membrane and alters pH of internal bicarbonate buffer → lowers pH ** pO2 (Clark electrode) *** o2 reduced at platinum cathode, releasing electrons..." |
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Revision as of 12:12, 20 February 2024
Types of Electrodes
- Glass Electrodes
- H+, Na+, K+, Li+, Ag+ NH4+
- pH Combination Electrodes
- Solid State Electrodes
- Cl-
- Liquid Ion-Exchange
- K+ (valinomycin binds K+ in centre ring)
- Ca2+ (organo-phosphate salt in PVC)
- Compound Gas Electrodes
- pCO2 (Severinghaus CO2 electrode)
- CO2 diffuses past first membrane and alters pH of internal bicarbonate buffer → lowers pH
- pO2 (Clark electrode)
- o2 reduced at platinum cathode, releasing electrons
- pCO2 (Severinghaus CO2 electrode)
- Enzyme Electrodes
- Non-ionic compounds
- Glucose, urea, etc.
- Measure ions generated from enzymatic reactions