QUIZ CHAPTER 25. Instruments for optical spectrometry

Spectroscopic instruments in the UV/visible and IR regions consist of how many key components?

• 3

• 4

• 5

• 6

Which of the following is NOT a type of optical spectroscopic measurement?

• Absorption measurements

• Diffraction measurements

• Fluorescence measurements

• Emission spectroscopy

What are the three types of optical spectroscopic measurements based on their configuration?

• Absorption, Transmission, Reflection

• Absorption, Fluorescence, Emission

• Absorption, Refraction, Dispersion

• Absorption, Reflection, Dispersion

Which material is required for UV region optical instruments due to glass absorption?

• Silicate glass

• Plastic

• Fused silica or quartz

• Crystalline sodium chloride

What is the purpose of a stable source of radiant energy in spectroscopic instruments?

• To measure the sample temperature

• To create a reference signal

• To generate the radiation beam for analysis

• To detect radiation interference

What are the two main types of spectroscopic sources?

• Primary and secondary sources

• Continuous and line sources

• Static and dynamic sources

• Atomic and molecular sources

Which of the following is a continuum source for UV/visible radiation?

• Tungsten filament lamp

• Deuterium lamp

• Globar source

• Nernst glower

What is the primary function of a monochromator or filter in spectroscopic instruments?

• To amplify the radiation signal

• To disperse radiation into component wavelengths

• To restrict measured radiation to a narrow band

• To detect stray radiation

Which type of transducer converts electromagnetic radiation into electrical signals?

• Photoconductive cells

• Thermocouples

• Photodiode arrays

• Photomultiplier tubes

What is the purpose of sample containers in spectroscopic measurements?

• To store calibration standards

• To hold samples during analysis

• To generate radiation beams

• To amplify electrical signals