Slide 1

UVVis Molecular Absorption Spectrometry Chapter 13

Slide 2

Slide 3

Measurement of Transmittance and Absorbance

Slide 4

Absorption Cell

Slide 5

Effect of Polychromatic Radiation

Slide 6

Instrument Noise Effect on Transmittance and Absorbance

Slide 7

Molecular Absorption Measurements Components

Slide 8

Output from a Deuterium Lamp

Slide 9

Typical Sourses of Light Deuterium Lamp Tungsten Lamp

Slide 10

Blackbody Radiation Curves

Slide 11

Spectral Bandwidth

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Slide 13

Effect of Slit Width

Slide 14

Slit Width and Resolution

Slide 15

Resolution

Slide 16

Interference Filter

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Transmission Characteristics of Transmission Filter

Slide 18

Absorption vs. Interference Filter

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Prism Monochromator

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Grating Monochromator

Slide 21

Echellette Grating

Slide 22

Dispersion for Three Types of Monochromator

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Combination Absorption Filter

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Photon Transducers

Slide 25

Phototube

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Photomultiplier

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Single-Beam Instrument

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Double-Beam Instrument beams separated in space

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Double-Beam Instrument beams separated in time

Slide 30

Single- and Double-Beam Photometer

Slide 31

Spectronic 20

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Double-Beam Spectrophotometer UV-Vis

Slide 33

Double-Beam Recording Spectrophotometer UV-Vis

Slide 34

Double-Dispersing Spectrophotometer

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Multichannel Spectrophotometer grating and photodiode array transducer

Slide 36

Multichannel Diode Array Spectrometer

Slide 37

End