How does a chloride ion-selective electrode work?
The Vernier Chloride Ion-Selective Electrode (ISE) is a membrane-based electrode that measures a specific ion (Cl–) in an aqueous solution. When the membrane of the electrode is in contact with a solution containing the specific ion, a voltage, dependent on the level of that ion in solution, develops at the membrane.
What is ion-selective electrode and explain its working?
An ion-selective electrode (ISE), also known as a specific ion electrode (SIE), is a transducer (or sensor) that converts the activity of a specific ion dissolved in a solution into an electrical potential. The voltage is theoretically dependent on the logarithm of the ionic activity, according to the Nernst equation.
What are the application of ion-selective electrode?
Ion-selective electrodes (ISEs) are very similar in use to pH electrodes. They are used for chloride, potassium, calcium, carbon dioxide/carbonate, oxygen, and a variety of other ions. These methods are particularly suited for field analysis and online measurements.
Which technique used for selective detection of chloride ion?
The Chloride Ion-Selective Electrode (ISE) is used to measure the concentration of Chloride (Cl–) in aqueous samples. The concentration of the Chloride ion gives a quick measurement of salinity of water samples. Use the Chloride ISE to measure chloride levels in ocean saltwater or salt in food samples.
What are the characteristics of ion selective electrodes?
Explanation: Ion selective electrodes have a wide concentration range. It is highly selective to a particular ion. 8. Ion selective electrode are unaffected by colour or turbidity of the solution.
Where did ion-selective electrodes come from?
In 1967 and 1968, in a small refurbished warehouse in the unfashionalbe part of Cambridge, new “specific ion electrodes” were being invented, developed, patented, and released for sale at such a rate that insiders talked about the “Electrode of the Month Club”.
How do you make an ion selective electrode?
Ion Exchange Process Ion-exchange process. In order to construct an ion-selective electrode, we would add an inner reference solution to the other side of the membrane. This solution would contain a fixed concentration of the ion of interest, Li+ in this example.
What is the role of chromate ions in chloride determination?
Potassium chromate can serve as an end point indicator for the argentometric determination of chloride, bromide and cyanide ions by reacting with silver ions to form a brick-red silver chromate precipitate in the equivalence point region.
Which of the following enzyme is used in the ammonia selective electrode?
Explanation: The biocatalytic membrane used in ammonia selective electrode is urease. It is used for the detection of ammonia.