Chapter_19_and_20_Lecture_Notes

Chapter_19_and_20_Lecture_Notes - a. Tungsten Lamp b....

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Chapter 19: Absorbance Measurements Involving Mixtures Chapter 20: Spectrophotometers: Instrumental Considerations I.  Absorbance Measurements Involving Mixtures A.  Analysis of Mixtures 1. Absorbance of a Mixture: Beer’s Law A mix  = A X  + A Y  + A Z  (where X, Y and Z are absorbing species)             A = b [ X ] + b [ Y ] + m i x X Y Z λ ε b Z [ ] 2. Isosbestic Point(s) B.  Absorbance Problems Involving Mixtures 1. Case I
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2. Case II Spectrophotometers A.  The Double-Beam Spectrophotometer 1.  Block Diagram and Instrumental Setup
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2.  Advantages of a Double-Beam Spectrophotometer over                            Single-Beam Spectrophotometer B.  Components of a Spectrophotometer 1. Light Sources
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Unformatted text preview: a. Tungsten Lamp b. Deuterium Arc Lamp Continuum Light Sources c. Globar and Nernst Glower d. Lasers (A Line Source) Laser: Acronym for Light Amplification by Stimulated Emission of Radiation 1. How Lasers Work/Operate 2. Properties of Laser Light a. b. c. d. e. 3. Disadvantages of Lasers a. b. c. C. Monochromators & Monochromatic Light 1. What is the role of a monochromator in the spectrophotometer? 2. Spectral Bandwidth 3. Optical Components that can be Used as a Monochromator a. b. c. 4. Resolution and how to increase resolution in monochromators....
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Chapter_19_and_20_Lecture_Notes - a. Tungsten Lamp b....

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