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Questions and Answers
What is the function of a light source in a spectroscopy system?
What is the purpose of a monochromator in a spectroscopy system?
What type of cuvettes are typically used in UV spectroscopy?
What is the characteristic of the output current of a photo detector?
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What is the function of a recorder in a spectroscopy system?
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What is the purpose of a hydrogen discharge lamp in a spectroscopy system?
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What type of monochromator is commonly used to separate polychromatic radiation into individual wavelengths?
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What is the function of a sample cell in a spectroscopy system?
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What is the relationship between the output current of a photo detector and the intensity of light falling on it?
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What is the function of a photomultiplier tube in a spectroscopy system?
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Study Notes
Components of a Spectrophotometer
- A light source generates a beam of polychromatic radiation, covering a desired range of wavelengths.
- Common radiation sources include:
- Hydrogen discharge lamp
- Quartz halogen lamp
- Deuterium gas discharge tube
- Mercury arc
Monochromator
- Separates polychromatic radiation into individual wavelengths using:
- Quartz prism
- Grating
- Colour filters
Sample Cell
- Holds the sample in the form of a solution or as is
- Examples of sample cells include:
- Quartz cuvettes (UV)
- Glass cuvettes (visible spectroscopy)
Detector
- Converts transmitted light energy directly into electrical energy
- The output current of the photo detector is directly proportional to the intensity of light falling on it
- Examples of detectors include:
- Photoelectric tube
- Photomultiplier tube
- Photovoltaic cell
Recorder
- A display device that automatically draws the spectrum
Components of a Spectrophotometer
- A light source generates a beam of polychromatic radiation, covering a desired range of wavelengths.
- Common radiation sources include:
- Hydrogen discharge lamp
- Quartz halogen lamp
- Deuterium gas discharge tube
- Mercury arc
Monochromator
- Separates polychromatic radiation into individual wavelengths using:
- Quartz prism
- Grating
- Colour filters
Sample Cell
- Holds the sample in the form of a solution or as is
- Examples of sample cells include:
- Quartz cuvettes (UV)
- Glass cuvettes (visible spectroscopy)
Detector
- Converts transmitted light energy directly into electrical energy
- The output current of the photo detector is directly proportional to the intensity of light falling on it
- Examples of detectors include:
- Photoelectric tube
- Photomultiplier tube
- Photovoltaic cell
Recorder
- A display device that automatically draws the spectrum
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Description
This quiz covers the components of a spectroscopy system, including light sources, monochromators, and sample cells. Learn about the different types of radiation sources and monochromators used in spectroscopy.
