Re: humus, humic acid and natural organic chelation agents

Stephen.Pushak at saudan_HAC.COM writes:
>What's in humic acid? Is it actually a mixture of several organic
>acids? Does it contain EDTA or other chelation agents? Are there
>other organic chelation agents in humus?

Humic Acids = Allomelanins found in soils, coals, and peat, resulting from the
decomposition of organic matter, particularly dead plants.  Consists of a
mixture of complex macromolecules having polymeric phenolic structures with
the ability to chelate with metals, especially iron.*

* _The Merk Index_, 9th ed.; Windholz, M., Ed.; Merk: Rahway, NJ, 1976; p 623.