Chapter 2. Theoretical Considerations

  1. Prof. Dr. rer. nat. Gerhard Talsky1,2

Published Online: 23 MAR 2004

DOI: 10.1002/3527601570.ch2

Book Title

Derivative Spectrophotometry: Low and Higher Order

Derivative Spectrophotometry: Low and Higher Order

Additional Information

How to Cite

Talsky, G. (2004) Theoretical Considerations, in Derivative Spectrophotometry: Low and Higher Order, Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527601570.ch2

Author Information

  1. 1

    Technische Universität München, Institut für Technische Chemie, Lichtenbergstr. 4, D-85747 Garching, Germany

  2. 2

    Sulzemooser Str. 3a, D-81245 München, Germany

Publication History

  1. Published Online: 23 MAR 2004
  2. Published Print: 15 SEP 1994

ISBN Information

Print ISBN: 9783527282944

Online ISBN: 9783527601578

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Keywords:

  • spectra;
  • low-temperature spectroscopy;
  • Fourier analysis;
  • differentiation;
  • analytical bands;
  • derivative spectra;
  • derivative method;
  • peak areas

Summary

This chapter contains sections titled:

  • Fine Resolution of Spectra

    • Optical Methods

    • Low-Temperature Spectroscopy

    • Computation Methods

      • Curve-Fitting Method

      • Numerical Multicomponent Analysis

      • Fourier Analysis

      • Differentiation

  • Differentiation and Derivative Spectra

  • Derivatives of Analytical Bands

    • Virtual Extrema

    • Sharpening of Peaks and Shoulders

    • Overlapping of Signals

    • Shifting of Maxima

  • Loss of Information by Differentiation vs. Increase in Resolution

  • “Real” Spectra and Noise

  • Evaluation of Derivative Spectra

    • Common Methods

      • Peak–Peak Method

      • Peak–Tangent Method

      • Peak–Zero Method

      • Peak–Peak Ratio Method

    • Special Methods

      • Half-Wave Graphical Illustration

      • Extended Peak–Peak Ratio Method

      • Isosbestic Point Method

      • Side–Peak–Side Ratio Method

    • Computational Methods

      • Additive and Subtractive Methods

      • Multiplicative Method

      • Partitive Method

    • New Variants in the Derivative Method

      • log A Derivative Method

      • Differentiation–Integration Method

    • Evaluation of Peak Areas

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