--- Content provided by FirstRanker.com ---current enters or leaves a nonmetallic portion of a circuit.
Indicator electrode: Used in potentiometry that produces
a potential representative of the species being measured.
Reference electrode: Is an electrode at which no
appropriate current is allowed to flow and which is used
working electrode, respectively.
Potentiometry: An electrochemical process where the
electrode and reference electrode when no current is
allowed to flow in the electrochemical cell.
Membrane potentials are caused by the permeability of
certain types of membranes to selected anions or cations.
Such membranes are used to fabricate ion-selective
electrodes that selectively interact with a single ionic
The potential produced at membrane-sample solution
interface is proportional to the logarithm of the ionic
activity or concentration of the ion in question
Measurements with ISEs are simple, often rapid,
concentrations.
The ion-selective membrane is the "heart" of an ISE
Ion-selective membranes typically consist of glass,
crystalline, polymeric materials.
used clinically for the measurement of
pH, PCO2 and electrolytes in whole
blood, serum, plasma and urine.
Indicator electrode: Used in potentiometry that produces
a potential representative of the species being measured.
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Reference electrode: Is an electrode at which no
appropriate current is allowed to flow and which is used
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to observe or control the potential of the indicator orworking electrode, respectively.
Potentiometry: An electrochemical process where the
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potential difference is measured between an indicatorelectrode and reference electrode when no current is
allowed to flow in the electrochemical cell.
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WORKING PRINCIPLEMembrane potentials are caused by the permeability of
certain types of membranes to selected anions or cations.
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Such membranes are used to fabricate ion-selective
electrodes that selectively interact with a single ionic
--- Content provided by FirstRanker.com ---
species.The potential produced at membrane-sample solution
interface is proportional to the logarithm of the ionic
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activity or concentration of the ion in question
Measurements with ISEs are simple, often rapid,
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nondestructive, and applicable to a wide range ofconcentrations.
The ion-selective membrane is the "heart" of an ISE
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as it controls the selectivity of the electrode.Ion-selective membranes typically consist of glass,
crystalline, polymeric materials.
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Ionic-selective electrodes are widelyused clinically for the measurement of
pH, PCO2 and electrolytes in whole
--- Content provided by FirstRanker.com ---
blood, serum, plasma and urine.