Re: humus, humic acid and natural organic chelation agents

• To: Stephen.Pushak at saudan_hac.com
• Subject: Re: humus, humic acid and natural organic chelation agents
• From: Bill Warner <lww at ictech_com>
• Date: Sat, 01 Jun 1996 15:14:22 -0500
• cc: Aquatic Plants Digest <Aquatic-Plants at actwin_com>
• In-reply-to: Your message of "Fri, 31 May 1996 15:03:07 PDT."

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.

Bill

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