Spectrophotometry Essentials
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Questions and Answers

Which of the following is not necessary for obtaining the spectrum of a compound from 190 to 500 nm?

  • Tungsten light source
  • Photomultiplier
  • Double-beam spectrophotometer
  • Deuterium light source (correct)
  • Quartz cuvettes

    • Stray light in a spectrophotometer places limits on which of the following?

  • Photometric accuracy below 0 absorbance units (correct)
  • Use of a grating monochromator
  • Upper range of linearity
  • Ability to measure in the UV range
  • Sensitivity

    • Which light source is used in atomic absorption spectrophotometry?

  • Xenon arc lamp
  • Laser
  • Deuterium lamp
  • Tungsten light
  • Hollow-cathode lamp (correct)

    • Which of the following is true concerning fluorometry?

    <p>The detector is always placed at right angles to the excitation beam.</p> Signup and view all the answers

    Which of the following techniques is not mentioned in the text?

    <p>Gas chromatography</p> Signup and view all the answers

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