Podcast
Questions and Answers
What is the function of a light source in a spectroscopy system?
What is the function of a light source in a spectroscopy system?
- To generate a beam of polychromatic radiation (correct)
- To convert transmitted light energy into electrical energy
- To display the spectrum
- To separate polychromatic radiation into individual wavelengths
What is the purpose of a monochromator in a spectroscopy system?
What is the purpose of a monochromator in a spectroscopy system?
- To display the spectrum
- To convert transmitted light energy into electrical energy
- To separate polychromatic radiation into individual wavelengths (correct)
- To hold the sample in the form of a solution or as is
What type of cuvettes are typically used in UV spectroscopy?
What type of cuvettes are typically used in UV spectroscopy?
- Quartz cuvettes (correct)
- Plastic cuvettes
- Glass cuvettes
- Metal cuvettes
What is the characteristic of the output current of a photo detector?
What is the characteristic of the output current of a photo detector?
What is the function of a recorder in a spectroscopy system?
What is the function of a recorder in a spectroscopy system?
What is the purpose of a hydrogen discharge lamp in a spectroscopy system?
What is the purpose of a hydrogen discharge lamp in a spectroscopy system?
What type of monochromator is commonly used to separate polychromatic radiation into individual wavelengths?
What type of monochromator is commonly used to separate polychromatic radiation into individual wavelengths?
What is the function of a sample cell in a spectroscopy system?
What is the function of a sample cell in a spectroscopy system?
What is the relationship between the output current of a photo detector and the intensity of light falling on it?
What is the relationship between the output current of a photo detector and the intensity of light falling on it?
What is the function of a photomultiplier tube in a spectroscopy system?
What is the function of a photomultiplier tube in a spectroscopy system?
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.
