What is Ion Selective Electrode in chemistry?

What is Ion Selective Electrode in chemistry?

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 ion-selective electrodes used for?

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.

What is the principle of ion-selective electrodes?

Principle of ion-selective electrode (I.S.E.) consists of a thin membrane across which only the intended ion can be transported. The transport of ions from a high conc. to a low one through a selective binding with some sites within the membrane creates a potential difference.

What is an ion-selective electrode give examples?

The most important ion-selective electrodes for pH determination are glass electrodes, liquid membrane electrodes, and ion-sensitive field-effect transistors (ISFETs). Glass pH electrode. The glass pH electrode used to measure water acidity is the most common example of an ion-selective electrode.

Is ion-selective electrode accurate?

Ion selective electrodes (ISEs) can provide very accurate results, but care must be taken when using an ISE, as accurate results are dependent on proper calibration and use.

Who invented the ion-selective electrode?

Cremer
Ion-selective electrodes have a history of over one century, noting that the best and most widely utilized ISE based on the glass pH electrode was invented in 1906 by Cremer, and that the pH electrode was quickly adapted as a routine analytical tool by the 1930s.

Who invented the ion selective electrode?

What creates the signal in an ion selective electrode?

Ion- selective electrode (ISE) is a broad sub- category of potentiometry including pH electrodes made of glass. The section of the membrane in contact with the sam- ple is the source of the signal generated by the ISE. The part or chemical that can interact with the analyte is termed the ionophore.

What does ion selective electrode mean?

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 is ion measurement?

Ion concentration measurement or ion-specific (ISE) measurements can be performed in every laboratory for a variety of sample types including water, food and beverage, pharmaceuticals, and biological samples. To evaluate a sample’s ion-specific performance, the best resource is slope S, also known from pH measurement.

What is a specific electrode?

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.