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Measurement of Barium by Ion Selective Electrode (CAT#: STEM-ACT-0104-WXH)

Introduction

Barium is a chemical element with symbol Ba.It is found in various salts like barium nitrate, barium sulphate and barium carbonate as Ba2+ion. Barium(2+) is a barium cation, a divalent metal cation and a monoatomic dication. It has a role as a cofactor. In group V,barium ions are precipitated as their carbonates by adding ammonium carbonate to their solution. Barium is a dense alkaline earth metal that occurs in nature as a divalent cation in combination with other elements.




Principle

An ideal 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.

Applications

• Used for the potentiometric determination of several anions (fluoride, chloride, bromide, iodide ion) and cations (sodium, potassium, calcium ion).
• Used for endpoint detection in potentiometric titration.
• In biochemistry, ion selective electrodes are used for the determination of enzymes and substances which interact with enzymes.

Procedure

1. Preparation of Standards
2. Instrument Setup and Operation
3. Analysis of sample

Materials

Ion Selective Electrode