Humic Substances. Structural Aspects, and Photophysical, Photochemical and Free Radical Characteristics

Part of the The Handbook of Environmental Chemistry book series (HEC, volume 1 / 1C)


The organic matter of soils, peats and waters consists of a mixture of plant and animal products in various stages of decomposition together with substances synthesized biologically and/or chemically from the breakdown products as well as microorganisms and small animals [3,50]. This organic matter is usually divided into two groups:
  1. (i)

    Nonhumic substances, and

  2. (ii)

    humic substances.



Humic Substance Humic Acid Fulvic Acid Humic Fraction Spin Concentration 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 1984

Authors and Affiliations

  1. 1.Laboratory of Environmental and Toxicological ChemistryUniversity of AmsterdamAmsterdamThe Netherlands

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