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Humic matter
It is part of humus, and is a mixture of amorphous, polydispersed colloidal, yellow to brown-black organic substances. They are hydrophilic, and high in molecular weights, which range from a few hundreds to thousands of daltons. They have originated from the decomposed, non-humic, organic fraction by "new formation," called humification.
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- Part of Speech: noun
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- Industry/Domain: Chemistry; Weather
- Category: Atmospheric chemistry
- Educational Institution: Sam Houston State University
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