Question

1. Define the terms “Releasing Agent” and “Ionization Suppressor” as it relates to atomic absorption spectroscopy. Make sure to indicate their application in the definition.

Answer 1

Releasing agent - A substance that react preferentially with chemical interference, thus prevent its interaction with analyte.

There are some chemical interferences, caused by some compounds in atomic absorption spectroscopy. Releasing agents are used to get rid off these interferences. Releasing agents react with these interferences and thus prevents its interaction with analyte.

Ionization supressor - It is easily ionized metal that provides a high concentration of electrons in flame, thus lessens the ionization of analyte.

During AAS, ionization of metal ions occur when analyte samples come under high temperature which affects atomic absorption and emission lines intensity. The sensitivity of instrument increases owing to high concentration of electrons that get added by ionization supressor.