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UV–Vis Molecular Absorption Spectrometry Chapter 13.

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Presentation on theme: "UV–Vis Molecular Absorption Spectrometry Chapter 13."— Presentation transcript:

1 UV–Vis Molecular Absorption Spectrometry Chapter 13

2

3 Measurement of Transmittance and Absorbance

4 Absorption Cell

5 Effect of Polychromatic Radiation

6 Instrument Noise – Effect on Transmittance and Absorbance

7 Molecular Absorption Measurements Components

8 Output from a Deuterium Lamp

9 Typical Sourses of Light Deuterium Lamp Tungsten Lamp

10 Blackbody Radiation Curves

11 Spectral Bandwidth

12

13 Effect of Slit Width

14 Slit Width and Resolution

15 Resolution

16 Interference Filter

17 Transmission Characteristics of Transmission Filter

18 Absorption vs. Interference Filter

19 Prism Monochromator

20 Grating Monochromator

21 Echellette Grating

22 Dispersion for Three Types of Monochromator

23 Combination Absorption Filter

24 Photon Transducers

25 Phototube

26 Photomultiplier

27 Single-Beam Instrument

28 Double-Beam Instrument beams separated in space

29 Double-Beam Instrument beams separated in time

30 Single- and Double-Beam Photometer

31 Spectronic 20

32 Double-Beam Spectrophotometer UV-Vis

33 Double-Beam Recording Spectrophotometer UV-Vis

34 Double-Dispersing Spectrophotometer

35 Multichannel Spectrophotometer grating and photodiode array transducer

36 Multichannel Diode Array Spectrometer

37 End


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