AAS & AES Spectroscopy

The purpose of AAS spectroscopy is:

• AAS spectroscopy is used to determine the concentration of a specific element in a sample by measuring the absorption of light at a specific wavelength.
• AAS spectroscopy is used to determine the concentration of multiple elements in a sample.
• AAS spectroscopy measures the emission of light at a specific wavelength.
• AAS spectroscopy is a technique used to analyze the crystal structure of a sample.

Hollow cathode lamp is used in which spectroscopy?

• atomic absorption spectroscopy
• mass spectrometry
• nuclear magnetic resonance spectroscopy
• atomic emission spectroscopy

Inductively Coupled Plasma is used in which spectroscopy?

• nuclear magnetic resonance spectroscopy
• atomic absorption spectroscopy

• atomic emission spectroscopy
• infrared spectroscopy

The purpose of lens in AAS & AES spectrometer is:

• To amplify the light
• To filter the light
• To focus the light
• To block the light

The working range of wavelength in AAS & AES spectrometer is:

• 190 nm to 900 nm
• 50 nm to 1000 nm
• 400 nm to 1000 nm
• 100 nm to 500 nm

The purpose of flame in AAS spectrometer is:

• To filter the sample
• To ionize the sample
• To atomize the sample
• To dissolve the sample

The purpose of ICP source in AES spectrometer is:

• To convert the sample into ions for analysis
• To heat the sample for better analysis
• To generate a magnetic field for analysis
• To measure the concentration of ions in the sample

The spectroscopy in which spectrum is produced due to de-excitation of excited electrons is:

• photoelectron spectroscopy
• Atomic absorption spectroscopy

• fluorescence spectroscopy
• Atomic emission spectroscopy

The spectrum obtained with bright background with few black line is:

• absorption spectrum
• reflection spectrum
• emission spectrum
• continuous spectrum

Which of the following is the principle of AAS?

• Absorption of light by free atoms in the gaseous state
• Reflection of light by ions in the gaseous state
• Emission of light by free atoms in the solid state
• Absorption of light by molecules in the liquid state