CHM260 AAS

Atoms

Molecules

Ions

Gaseous metal atoms

Its mass number

Its characteristic spectrum

Its atomic radius

Its electronegativity value

It falls to a lower energy orbital.

It forms a covalent bond with another atom.

It becomes ionized.

It is excited to a higher-energy orbital.

To form molecular ions for mass spectrometry.

To convert the sample into a solid precipitate.

To convert the sample to an atomic vapor.

To dissolve the sample in a suitable solvent.

Flame

Electrothermal vaporization (ETV)

Inductively coupled argon plasma (ICP)

Microwave-induced argon plasma (MIP)

Nebulizer, Source, sample, burner, monochromator, detector, computer readout

Burner, nebulizer, monochromator, detector, computer readout

Burner, nebulizer, monochromator, computer, detector readout

Nebulizer, burner, monochromator, detector, computer readout

Primary combustion zone

Secondary combustion zone

Interzonal region

Pre-combustion zone

To heat the sample to a high temperature.

To convert the liquid sample to a fine spray.

To detect the absorbed radiation.

To separate different elements in the sample.

Laminar flow burner

Premix burner

Total consumption burner

Slotted burner

Self-absorption

Chemical Interference

Ionization Interference

Spectral Interference