Document Type : Articles

Authors

Department of Soil Science and Water Resources, College of Agriculture, Tikrit University, Tikrit, Iraq

Abstract

Organic matter content in soils is highly variable and includes dead and living organisms and their decomposition products. plant residue and humic substances. Thermodynamically, organic matter is unstable in soils and later will oxidize to Co2, and H2O. The effective substances of organic matter decomposition are fulvic and humic acids (FA+Hu) which contain Several functional groups that release electrons or protons during their decomposition leaving behind several radical groups that act as electron donner to ward heavy metal ions forming FA and Hu-metal soluble and insoluble complexes. Those metallic-organic Complexes are variable by their Stability constant (SC) which is absolutely pH-dependent. The less stable the metal complex, the higher mobility in soil, In contrast, a highly stable metal complex is less soluble and mobility. So, organic matter plays an important role in the accumulation, leaching, and transportation of heavy metal Cations present in water and soils as chelates of different Stability and supplying plant roots by these ions and behavior as a buffering substance to heavy metal mobility.

Keywords

  1. Abdelrady, A., Bachwenkizi, J., Sharma, S., Sefelnasr, A., & Kennedy, M. (2020). The fate of heavy metals during bank filtration: Effect of dissolved organic matter. Journal of Water Process Engineering, 38, 101563.‏
  2. Al-Hamandi, H. M. N. (2018). Comparison of Chemical Conversion of Humus Compounds in Some Soils of Aqra District. Tikrit Journal for Agricultural Sciences , 18(2), 129-134.‏ ‏
  3. ‏Andrzejewski, M., & Rosikiewicz, D. (1975). Ability of some trace elements to form complexes with humic acids. Studies about Humus; Transaction of the Internationalsymposium Humus et Planta.‏
  4. Augustyn, D., & Urbaniak, H. (1979). Retention of cations of humic acids from Polish brown coal and some properties of metal-humic compounds. In 7th Int. Symp. Humus and Planta, Brno, Czechoslovakia (p. 26).
  5. Bloom, P. R., & McBride, M. B. (1979). Metal ion binding and exchange with hydrogen ions in acid‐washed peat. Soil Science Society of America Journal, 43(4), 687-692.‏
  6. Bolan, N. S., & Duraisamy, V. P. (2003). Role of inorganic and organic soil amendments on immobilisation and phytoavailability of heavy metals: a review involving specific case studies. Soil Research, 41(3), 533-555.‏
  7. ‏Bolton, K. A., & Evans, L. J. (1991). Elemental composition and speciation of some landfill leachates with particular reference to cadmium. Water, Air, and Soil Pollution, 60(1), 43-53.
  8. ‏Boyle, M., & Fuller, W. H. (1987). Effect of municipal solid waste leachate composition on zinc migration through soils (Vol. 16, No. 4, pp. 357-360). American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.
  9. Chen, J., Zhang, H., Wei, Q., Farooq, U., Zhang, Q., Lu, T., ... & Qi, Z. (2022). Mobility of water-soluble aerosol organic matters (WSAOMs) and their effects on soil colloid-mediated transport of heavy metal ions in saturated porous media. Journal of Hazardous Materials, 129733.‏
  10. ‏Escrig, I., & Morell, I. (1998). Effect of calcium on the soil adsorption of cadmium and zinc in some Spanish sandy soils. Water, Air, and Soil Pollution, 105(3), 507-520.
  11. Evans, L. J., Sengdy, B., Lumsdon, D. G., & Stanbury, D. A. (2003). Cadmium adsorption by an organic soil: a comparison of some humic–metal complexation models. Chemical Speciation & Bioavailability, 15(4), 93-100.
  12. Förstner, U., & Müller, G. (2013). Schwermetalle in Flüssen und Seen als Ausdruck der Umweltverschmutzung. Springer-Verlag.‏
  13. Gamble, D. S. (1986). Interactions between natural organic polymers and metals in soil and freshwater systems: Equilibria. In The Importance of Chemical “Speciation” in Environmental Processes (pp. 217-236). Springer, Berlin, Heidelberg.
  14. Gluskoter, H. J. (1977). Trace elements in coal: occurrence and distribution. Circular no. 499.
  15. ‏Halder, D., Saha, J. K., & Biswas, A. (2020). Accumulation of essential and non-essential trace elements in rice grain: Possible health impacts on rice consumers in West Bengal, India. Science of The Total Environment, 706, 135944.‏
  16. Herencia, J. F., Ruiz, J. C., Morillo, E., Melero, S., Villaverde, J., & Maqueda, C. (2008). The effect of organic and mineral fertilization on micronutrient availability in soil. Soil science, 173(1), 69-80.‏
  17. Kabata-Pendias, A. (2000). Trace elements in soils and plants. CRC press. Taylor and Francis group London .
  18. Killops, V. J., & Killops, S. D. (2013). Introduction to organic geochemistry. John Wiley & Sons.‏
  19. ‏Kitagishi, K., & Yamane, I. (1981). Heavy metal pollution in soils of Japan. Science society press. Tokyo. 302.
  20. Kodama, H., & Schnitzer, M. (1980). Effect of fulvic acid on the crystallization of aluminum hydroxides. Geoderma, 24(3), 195-205.
  21. Kördel, W. (1997). Fate and effects of contaminants in soils as influenced by natural organic material-status of information. Chemosphere, 35(1-2), 405-411.
  22. Lamy, I., Bourgeois, S., & Bermond, A. (1993). Soil cadmium mobility as a consequence of sewage sludge disposal (Vol. 22, No. 4, pp. 731-737). American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.
  23. ‏Laxen, D. P. (1985). Trace metal adsorption/coprecipitation on hydrous ferric oxide under realistic conditions: the role of humic substances. Water Research, 19(10), 1229-1236.‏
  24. ‏Li, Z., & Shuman, L. M. (1996). Redistribution of forms of zinc, cadmium and nickel in soils treated with EDTA. Science of the Total Environment, 191(1-2), 95-107.
  25. Liu, M., Zhu, J., Yang, X., Fu, Q., Hu, H., & Huang, Q. (2022). Mineralization of organic matter during the immobilization of heavy metals in polluted soil treated with minerals. Chemosphere, 301, 134794.‏
  26. Matthews, E. (1983). Global vegetation and land use: New high-resolution data bases for climate studies. Journal of Applied Meteorology and Climatology, 22(3), 474-487.‏
  27. McBride, M. B., Richards, B. K., Steenhuis, T., Russo, J. J., & Sauve, S. (1997). Mobility and solubility of toxic metals and nutrients in soil fifteen years after sludge application. Soil Science, 162(7), 487-500.
  28. Minkina, T. M., Motuzova, G. V., & Nazarenko, O. G. (2006). Interaction of heavy metals with the organic matter of an ordinary chernozem. Eurasian Soil Science, 39(7), 720-726.
  29. Norvell, W. A., & Lindsay, W. L. (1972). Reactions of DTPA chelates of iron, zinc, copper, and manganese with soils. Soil Science Society of America Journal, 36(5), 778-783.‏
  30. Pauli, F. W. (1975). Heavy metal humates and their behavior against hydrogen sulfide. Soil Science, 119(1), 98-105.
  31. Rashid, M. A. (1974). Absorption of metals on sedimentary and peat humic acids. Chemical Geology, 13(2), 115-123.
  32. Schnitzer, M., & Kerndorff, H. (1981). Reactions of fulvic acid with metal ions. Water, Air, and Soil Pollution, 15(1), 97-108.
  33. Sholkovitz, E. R., & Copland, D. (1981). The coagulation, solubility and adsorption properties of Fe, Mn, Cu, Ni, Cd, Co and humic acids in a river water. Geochimica et Cosmochimica Acta, 45(2), 181-189.
  34. ‏Stepanova, M. D. (1976). Microelements in the Organic Matter of Chernozems and Soddy-Podzolic Soils.
  35. ‏Stevenson, F. J. (1972). Organic matter reactions involving micronutrients in soils. Micronutrients in agriculture, 79-115.‏
  36. Takamatsu, T., & Yoshida, Y. (1978). Determination of stability constants of metal-humic acid complexes by potentiometric titration and ion-selective electrodes. Soil Science, 125(6), 377-386.
  37. ‏Tan, K. H. (2010). Principles of soil chemistry. CRC press. Taylor and Francis group London .
  38. Taylor, T. P., Ding, M., Ehler, D. S., Foreman, T. M., Kaszuba, J. P., & Sauer, N. N. (2003). Beryllium in the environment: a review. Journal of Environmental Science and Health, Part A, 38(2), 439-469.‏
  39. Trofimova, E. S., Zykova, M. V., Ligacheva, A. A., Sherstoboev, E. Y., Zhdanov, V. V., Belousov, M. V., ... & Dygai, A. M. (2017). Influence of humic acids extracted from peat by different methods on functional activity of macrophages in vitro. Bulletin of experimental biology and medicine, 162(6), 741-745.‏
  40. Tyler, G., & Olsson, T. (2002). Conditions related to solubility of rare and minor elements in forest soils. Journal of Plant Nutrition and Soil Science, 165(5), 594-601.‏
  41. ‏‏Van Dijk, H. (1971). Cation binding of humic acids. Geoderma, 5(1), 53-67.
  42. Violante, A., Cozzolino, V., Perelomov, L., Caporale, A. G., & Pigna, M. (2010). Mobility and bioavailability of heavy metals and metalloids in soil environments. Journal of soil science and plant nutrition, 10(3), 268-292.‏
  43. Vlasov, N. A., & Mikhailova, A. I. (1975). Interaction of coal humic acid fractions with some metallic cations and the effect of coal humic fertilizers on the distribution of microelements in soil and plants. Studies about Humus; Transaction of the Internationalsymposium Humus et Planta.
  44. Walker, D. J., Clemente, R., Roig, A., & Bernal, M. P. (2003). The effects of soil amendments on heavy metal bioavailability in two contaminated Mediterranean soils. Environmental Pollution, 122(2), 303-312.
  45. Weber, J. H. (1988). Binding and transport of metals by humic materials. Humic substances and their role in the environment, 165-178.
  46. Yang, H. J., Jeong, H. J., Bong, K. M., Kang, T. W., Ryu, H. S., Han, J. H., ... & Na, E. H. (2020). Organic matter and heavy metal in river sediments of southwestern coastal Korea: Spatial distributions, pollution, and ecological risk assessment. Marine pollution bulletin, 159, 111466.‏‏
  47. Zunino, H., Aguilera, M., Caiozzi, M., Peirano, P., Borie, F., & Martin, J. P. (1979). Metal-binding organic macromolecules in soil: 3. Competition of Mg (II) and Zn (II) for binding sites in humic and fulvic-type model polymers. Soil Science, 128(5), 257-266.