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  2. Humic substance - Wikipedia

    en.wikipedia.org/wiki/Humic_substance

    "Humic substances" is an umbrella term covering humic acid, fulvic acid and humin, which differ in solubility. By definition, humic acid (HA) is soluble in water at neutral and alkaline pH, but insoluble at acidic pH < 2. Fulvic acid (FA) is soluble in water at any pH. Humin is not soluble in water at any pH.

  3. Disinfection by-product - Wikipedia

    en.wikipedia.org/wiki/Disinfection_by-product

    These disinfectants may react with naturally present fulvic and humic acids, amino acids, and other natural organic matter, as well as iodide and bromide ions, to produce a range of DBPs such as the trihalomethanes (THMs), haloacetic acids (HAAs), bromate, and chlorite (which are regulated in the US), and so-called "emerging" DBPs such as ...

  4. International Humic Substances Society - Wikipedia

    en.wikipedia.org/wiki/International_Humic...

    The International Humic Substances Society maintains a collection of standard and reference samples of humic and fulvic acids extracted and fractionated from leonardite, river water, a mineral soil, and peat, plus natural organic matter isolated from river water by reverse osmosis, [4] without fractionation. [5]

  5. Shilajit - Wikipedia

    en.wikipedia.org/wiki/Shilajit

    Shilajit or mumijo, Mohave lava tube, 2018. Shilajit (Sanskrit: शिलाजीत; lit. ' conqueror of mountain ', 'conqueror of the rocks'), salajeet (Urdu: سلاجیت), mumijo or mumlayi or mumie [1] is an organic-mineral product of predominantly biological origin, formed at high altitudes of stony mountains, in sheltered crevices and cave.

  6. Talk:Fulvic acid - Wikipedia

    en.wikipedia.org/wiki/Talk:Fulvic_acid

    Fulvic acid (The product, only exists in lab) – (The more common use of the term). Industrial chemical. Use in article: ...This is the only method that the California departments of agriculture will accept when registering a product. Fulvic acid in soil (only exists in nature) – (Most of this article content. Content needs to be moved to ...

  7. Acid–base extraction - Wikipedia

    en.wikipedia.org/wiki/Acid–base_extraction

    Acid–base extraction is a subclass of liquid–liquid extractions and involves the separation of chemical species from other acidic or basic compounds. [1] It is typically performed during the work-up step following a chemical synthesis to purify crude compounds [2] and results in the product being largely free of acidic or basic impurities.

  8. Total organic carbon - Wikipedia

    en.wikipedia.org/wiki/Total_organic_carbon

    Humic acid, fulvic acid, amines, and urea are examples of NOM. Some detergents, pesticides, fertilizers, herbicides, industrial chemicals, and chlorinated organics are examples of synthetic sources. [14] Before source water is treated for disinfection, TOC provides an estimate of the amount of NOM in the water source.

  9. Dystrophic lake - Wikipedia

    en.wikipedia.org/wiki/Dystrophic_lake

    Dystrophic lakes, also known as humic lakes, are lakes that contain high amounts of humic substances and organic acids. [1] The presence of these substances causes the water to be brown in colour and have a generally low pH of around 4.0-6.0. [ 2 ]