- General – Senesi, N. (1990). Analytica Chimica Acts, 232, 51-75. Amsterdam, The Netherlands: Elsevier.
- Electrolytes – Baker, W.E. (1973). Geochimilen at Casmochtulon Acts, 37, 269-281.
- Trace elements – Gamble, D.S., & Schnitzer, M. (1974). Trace Metals and Metal-Organic Interactions in Natural Waters. Ann Arbor, Mi: Ann Arbor Science.
- Electrolytes – Crile, G. (1926). A bipolar theory of living processes. New York: McMillen.
- Electrical potential – Crile, G. (1926). A bipolar theory of living processes. New York: McMillen.
- Electrolytes – Jackson, William R. (1993). Humic, Fulvic and Microbial Balance: Organic Soil Conditioning 329. Evergreen, Colorado: Jackson Research Center.
- Electrolytes – New Electronic Encyclopedia. (1991). Photosynthesis. Grolier Electronic Publishing.
- Donor and acceptor – Jackson, William R. (1993). Humic, Fulvic and Microbial Balance: Organic Soil Conditioning. Evergreen, Colorado: Jackson Research Center.
- Donor and acceptor – Rashid, M.A. (1985). Geochemistry of marine humic substances. New York: Springer-Verlag.
- Donor and acceptor – Sposito, G., Holtaclaw, K.M., LeVesque, C.S., & Johnston, C.T. (1982). Trace metal chemistry in arid-zone filed soils amended with sewage sludge. II. Comparative study of the fulvic and fraction. Soil Science Society America Journal, 45, 265-270.
- Electrolytes – Mineral complexes in fulvic may serve as electrodes – Rashid, M.A. (1985). Geochemistry of marine humic substances. New York: Springer-Verlag.
- Free-radicals scavenging – Senesi N. (1990) Analytion Chimica Acts, 232, 51-75. Amsterdam, The Netherlands: Elaevier.
- Free-radicals scavenging – Senesi, N., Chen, Y., & Schnitzer, M. (1977b). The role of humic acids in extracellular electron transport and chemical determination of pH in natural waters. Soil Biology and Biochemistry, 9, 397-403.
- Anti-oxidant – Senesi, N., Chen, Y., & Schnitzer, M. (1977b). The role of humic acids in extracellular electron transport and chemical determination of pH in natural waters. Soil Biology and Biochemistry, 9, 397-403.
- Dissolves metals and minerals – Ong, H.L., Swanson, V.D., & Bisque, R.E. (1970) Natural organic acids as agents of chemical weathering (130-170). U.S. Geological Survey Professional Paper 700 C. Washington, DC: U.S. Geological Survey.
- Enhances and transports nutrients – Christman, R.F., & Gjessing, E.T. (1983). Aquatic and terrestrial humic materials. The Butterworth Grove, Kent, England: Ann Arbor Science. Also: Prakish, A. (1971). Terrigenous organic matter and coastal phytoplankton fertility. In J.D. Costlow (Ed.), Fertility of the sea, 2, 351-368. (Proceedings of an International Symposium on Fertility of the Sea, Seo Paulo, Brazil, London, and New York: Gordon and Breach Science).
- Enhances and transports nutrients – Prakash, A. (1971). Fertility of the Sea, 2, 351-368.
- Anti-biotic – Williams, S.T. (1963). Are antibiotics produced in soil? Pedobiologia, 23, 426, 435.
- Stimulate growth – Kanonova, M.M. (1966). Soil organic matter. Elmsford, NY: Pergamon.
- Vitamins – Kanonova, M.M. (1966). Soil organic matter. Elmsford, NY: Pergamon.
- Chelator – Deb, B.C. (1949). The movement and precipitation of iron oxides in podzol soils. Journal of Soil Sciences, 1, 112-122.
- Catalyzes enzyme reactions – Khristeva, L.A., Luk’Yaneko, M.V. (1962). Role of physiologically active substances in soil-humic acids, bitumens and vitamins B, C, P-PA and D in the life of plants and their replenishment. Soviet Soil Sciences, 10, 1137-1141.
- Catalyzes enzyme reactions – Pardoe, H.L., Townshend, A., Clerc, J.T., VenderLinden (Eds.), 1990, May 1). Analytica Chimica Acts, Special Issue, Humic and Fulvic Compounds, 232 (1), 1-235. (Amsterdam, Netherlands: Elsevier Science Publishers).
- Increases assimilation – Buffle, J. (1988). Complexation Reactions in Aquatic Systems: An Analytical Approach. Chickester: Horwood.
- Low molecular weight – Aiken, G.R, McKnight, D.M., & VacCarthy, P. 1985). Humic substances of soil, sediment and water, New York: Wiley-Interscience.
- Sensitizes cell membranes – Rashid, M.A. (1985). Geochemistry of Marine Humic Substances. New York: Springer-Verlag.
- Stimulates metabolism – Rashid, M.A. (1985). Geochemistry of Marine Humic Substances. New York: Springer-Verlag.
- Genetics and growth – Jackson, William R. (1993). Humic, Fulvic and Microbial Balance: Organic Soil Conditioning, 538. Evergreen, Colorado: Jackson Research Center.
- Oxygen absorption – Kononova, M.M. (1966). Soil organic matter. Elmsford, NY: Pergamon.
- Transport of nutrients – Kanonova, M.M. (1966). Soil organic matter. Elmsford, NY: Pergamon.
- Immune system – Syltie, P.W. (1985). Effects of very small amounts of highly active biological substances on plant growth. Biological Agriculture and Horticultures, 2, 245-269, and Research reports and studies, Appropriate Technology Ltd. Dallas, TX: Murray Sinks II of ATL (Publisher).
- Detoxification – Christman, R.F., & Gjessing. E.T. (1983). Aquatic and terrestrial humic materials. The Butterworth Grove, Kent, England: Ann Arbor Science. Also: Prakash, A. (1961). Terrigenous organic matter and coastal phytoplankton fertility. In J.D. Costlow (Ed), Fertility of the sea, 2, 351-368. (Proceedings of an International Symposium on Fertility of the Sea, Seo Paulo, Brazil, London, and New York: Gordon and Breach Science).
- Environmental – Paraquat – Fischer, A.M., Winterie, J.S., & Mill, T. (1967). Primary photochemical processes in photolysis medicated by humic substances. In R.G. Zika & W.J. Cooper (Eds). Photochemistry of environmental aquatic system (141-156). (ACS Symposium Series 327). Washington DC: American Chemical Society.
- Environmental – Aiken, G.R, McKnight, D.M., & MacCarthy, P. (1985). Humic substances of soil, sediment and water. New York: Wiley-Interscience.
- Radioactivity – Szalay, A. (1958). The significance of humus in the geochemical enrichment of uranium. Proceedings of the 2nd International Conference on the Peaceful Uses of Atomic Energy, 2, 182-186. (London: Pergamon).
- Dissolution of silica – Huang, W.H., & Delier, W.D. (1970). Dissolution of rock-forming silicate minerals in organic acids; simulated first stage weathering of fresh minerals surfaces. America Mineralogical Journal, 55, 2076-2097.
- Dissolution of silica – Kodmans, H., Schnitzer, M., & Jaakkimainen, M. (1983). Chlorite and biotite weathering by fulvic acid solutions in closed and open systems. Canadian Journal of Soil Science, 63, 619-629.
- Chelation of minerals – Schnitzer, M, & Dodama, H. (1977). Reactions of minerals with soil humic substances. In J.B. Dixon & S.B. Weed (Eds.), Minerals in soil environments (Chap. 21). Madison, WI: Soil Science Society of America.
- Dissolution of silica – “The Fulvic Acid, Vegetal Silica Miracle‚ and further documentation of Kervran, Lois C., Biological Transmutations.
- Cell elongation – Poapst , P.A., & Schnitzer, M. (1971). Fulvic acid and adventitious root formation. Soil Biology and Biochemistry, 3, 215-219.
- Enhances permeability of cell membranes – Christman, R.F., & Gjessing, E.T. (1983). Aquatic and terrestrial humic materials. The Butterworth Grove, Kent, England: Ann Arbor Science. Also: Prakash, A. (1971). Terrigenous organic matter and coastal phytoplankton fertility. In J.D. Costlow (Ed.), Fertility of the sea, 2, 351-368. (Proceedings of an International Symposium on Fertility of the Sea, Sao Paulo, Brazil, London and New York: Gordon and Breach Science) low molecular weight, Aiken, G.R., McKnight, D.M., & VacCarthy, P. 1985). Humic substances of soil, sediment and water, New York: Wiley-Interscience.
- Sensitizing agent – Prakash, A. (1971). Terrigenous organic matter and coastal phytoplankton fertility. In J.D. Costlow (Ed.), Fertility of the sea, 2, 351-368. (Proceedings of an International Symposium on Fertility of the Sea, Sao Paulo, Brazil, London, and new York: Gordon and Breach Science).
- Increases metabolism of proteins – Christman, R.F., & Gjessing, E.T. (1983). Aquatic and terrestrial humic materials. The Butterworth Grove, Kent, England: Ann Arbor Science. Also: Prakash, A. (1971). Terrigenous organic matter and coastal phytoplankton fertility. In J.D. Costlow (Ed.), Fertility of the sea, 2, 351-368. (Proceedings of an International Symposium on Fertility of the Seam, Sao Paulo, Brazil, London, and New York: Gordon and Breach Science).
- Proteins, DNA, RNA – Khristeva, L.A., Solocha, K.L., Dynkins, R.L., Kovalenko, V.E., & Gorovaya, A.I. (1967). Influence of physiologically active substances of soil humus and fertilizers on nucleic acid metabolism, plant growth and subsequent quality of the seeds. Humus at Plants, 4, 272-276.
- Proteins, DNA, RNA – Jackson, William R. (1993). Humic, Fulvic and Microbial Balance: Organic Soil Conditioning, 569-570. Evergreen, Colorado: Jackson Research Center.
- DNA, RNA – Khristeva, L.A. (1968). About the nature of physiologically active substances of the soil humus and of organic fertilizers and their agricultural importance. In F.V. Hernando (Ed.), Pontifica academec scientarium citta del vaticano (701-721). New York: John Wiley.
- Catalyst to vitamins within the cell – Williams, Dr. Roger J. (1977). The Wonderful World within You. Bio-Communications Press. Wichita, Kansas.
- Transports metal ions – Schnitzer, M., & Khan, S.U. (1972). Humic substances in the environment. New York: Dekker.