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AREA 6 - QA/QC > SPECTROPHOTOMETER > Flashcards

SPECTROPHOTOMETER Flashcards

1
Q

Spectrophotometer parts

A
  1. Source of radiation
  2. Wavelength selector
  3. Sample cell
  4. Radiation detector
  5. Signal processor and readout
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2
Q

Source of radiation

A
  1. Continuum sources
  2. Line sources
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3
Q

Source of radiation

Continuum sources

A
  1. Deuterium lamp
  2. Tungsten lamp
  3. Nernst glower
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4
Q

Source of radiation

Line sources

A

Hollow cathode

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5
Q

Isolates a restricted region of the spectrum

A

Wavelength selector

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6
Q

Wavelength selector

A
  1. Filters
  2. Monochromators
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7
Q

Wavelength selector

Dedicated to a single band of wavelength

A

Filters

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8
Q

Wavelength selector

designed for spectral scanning (ex: prisms, gratings)

A

Monochromators

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9
Q

Holds the sample to be analyzed

A

Sample cell

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10
Q

Sample cell

A
  1. Quartz cuvette
  2. Silicate glass or plastic cell
  3. NaCl or KBr plates
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11
Q

Sample cell

Quartz cuvette

A

UV or Visible region

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12
Q

Sample cell

Silicate glass or plastic cell

A

Visible region

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13
Q

Sample cell

NaCl or KBr plates

A

IR region

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14
Q

Converts radiant energy into a usable electrical signal

A

Radiation detector

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15
Q

Radiation detector

A
  1. Phototubes
  2. Photomultipliers
  3. Photodiodes
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16
Q

Radiation detector

More sensitive radiation detector

A

Photodiodes

17
Q

Displays the transduced electrical signal into numbers

A

Signal processor and readout

AREA 6 - QA/QC (11 decks)

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