Top topic this week
Back to FAQs
Related FAQs
Frequently Asked Question
Questions asked by users might not always be phrased in the clearest way.
Explain the working of hydride generation system in Atomic absorption spectroscopy
Accepted Answer
A hydride generation system is used in atomic absorption spectroscopy (AAS) to convert metal ions in a sample into volatile metal hydrides, which are then transported to the flame or plasma for atomization and measurement. The system typically consists of a reaction vessel, a gas bubbler, and a drying tube. The reaction vessel contains the sample and a reducing agent, such as sodium borohydride or potassium borohydride. The gas bubbler introduces an inert gas, such as argon or nitrogen, into the reaction vessel to help purge the volatile metal hydrides from the solution. The drying tube removes any moisture from the gas stream before it enters the flame or plasma. The working principle of the hydride generation system is based on the reaction of the metal ions with the reducing agent to form metal hydrides. The metal hydrides are then transported to the flame or plasma, where they are atomized and excited. The excited atoms then emit photons of light at a characteristic wavelength, which is measured by the AAS detector.
Articles you might like