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Definition of Aminomethylphosphonic acid (AMPA):
Aminomethylphosphonic acid is mainly produced by environmental biodegradation reactions of the herbicide glyphosate[1].
This is the common definition for Aminomethylphosphonic acid (AMPA), other definitions can be discussed in the article



Currently very little is known about AMPA. It is formed by biodegradation of the herbicide glyohosate. Compared to glyohosate; present at lower concentrations in the environment, although it's more stable, it adsorbs more strongly to soils and might have a higher tendency towards bioaccumulation. Glysphosate itself however is not expected to bioaccumulate much because of its higher water solubility[2].

Measured concentrations of AMPA in surface waters range between 6 and 35 µg/l [3].

Environmental standards and legislation

Included in the water framework list of priority substances


  1. Canadian Department of Pesticide Regulation 1998 ENVIRONMENTAL FATE OF GLYPHOSATE
  2. August 20 2009
  3. August 25 2009.
The main author of this article is Daphnis De Pooter
Please note that others may also have edited the contents of this article.

Citation: Daphnis De Pooter (2013): AMPA. Available from [accessed on 27-11-2015]