(CEB 4032) ANALYTICAL CHEMISTRY: Atomic Spectroscopy

When talking about energy levels in an atom, what is an "excited state"?

• The highest energy state of an atom.

• Any level higher than the ground state.

• The lowest energy state of an atom.

What is the temperature range at which samples are vaporized in atomic spectroscopy?

• 1000 - 1500 K

• 10 - 1000 K

• 2000 - 6000 K

• 500 - 800 K

Which of the following are benefits of the AAS process?

• The detection of mercury ions in soil samples.

• The detection of oxygen ions in water samples.

• The detection of lead ions in water samples.

• The detection of nitrogen ions in soil samples.

Which of the following elements is best analyzed by atomic absorption spectroscopy?

• Oxygen

• Nitrogen

• Lead

• Xenon

Which one shows illustration for Atomic Emission Spectroscopy?

• 
• 
• 
• 

What are the advantages of AES?

• Energetic ion source

• Good emission spectra

• Lower susceptibility to spectral interferences

• Lower susceptibility to chemical interferences

Atomic Fluorescence Spectroscopy (AFS) is combination of AAS and AES.
What is the part from AES that is also applied in AFS?

• excitation from ground state to upper state

• 
  measurement by detection of radiation emitted by flame

• 
  measurement by detection of radiation emitted by atoms

In AFS, atoms are primarily excited by radiation from light source, which is the same as....

• AAS

• AES

Below are the applications of atomic spectroscopy, EXCEPT....

• laboratories

• education

• sampling for heavy-metal contaminations

• 
  pharmaceutical

Is atomic spectroscopy highly sensitive?

• Yes

• No