Effect of natural organic acids on mobilization of macro- and microelements from rocks

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Abstract


Experimental study of leaching of the main cations (Na, K, Mg, and Ca), alkaline and alkaliearth microelements (Li, Rb, Cs, Be, Sr, and Ba), heavy metals (Mn, Fe, Co, Ni, Cu, Zn, Cd, Tl, and Pb), hydrolyzate elements (Y, RZ, Ti, Th, and U), and anionic elements (F, Si, P, and V) from rocks of different acidity with distilled water and a multicomponent solution of organic acids, having the distribution of dissociation constants corresponding to natural dissolved organic matter was carried out. It has been shown that carboxylic acids, which are part of the dissolved organic matter contained in surface waters, cause a sharp increase in the mobilization of both the main cations and trace elements from silicate rocks. The chemical properties of the elements are of secondary importance, as was shown by the general correlation between the parameter related to the mobility of the elements at the initial stage of the leaching and their content in the rocks.


About the authors

A. V. Savenko

Lomonosov Moscow State University

Author for correspondence.
Email: Alla_Savenko@rambler.ru

Russian Federation, Moscow

V. S. Savenko

Lomonosov Moscow State University

Email: Alla_Savenko@rambler.ru

Russian Federation, Moscow

References

  1. Мелькановицкая С.Г. // Водные ресурсы. 1978. № 1. С. 65-71.
  2. Thurman E.M. Organic Geochemistry of Natural Waters. Dordrecht: W. Junk Publ., 1985. 497 p.
  3. Орлов Д.С. Химия почв. М.: Изд-во МГУ, 1992. 400 с.
  4. Woolard C. D., Lznder P. W. // Sci. Total Environ. 1999. V. 226. № 1. P. 35-46.
  5. Stephens J. C. Response of Soil Mineral Weathering to Elevated Carbon Dioxide. Ph.D. Thesis. Pasadena: California Inst. Techn., 2002. 179 p.
  6. Ullman W. J., Welch S. A. Water-Rocks Interactions, Ore Deposits, and Environmental Geochemistry // Geochem. Soc. Amer. Spec. Publ. 2002. № 7. P. 3-35.
  7. Bertin C., Yang X. H., Weston L. A. // Plant and Soil. 2003. V. 256. № 1. Р. 67-83.Soil Chemistry and Biogeochemical Processes in Soil. Oslo: Univ. Oslo Depart. Chem., 2006, 58 p.
  8. Стандартные образцы состава дальневосточных магматических пород. Иркутск: НИИ прикл. физики Иркут. гос. ун-та, 2002. 24 с.
  9. Стандартные образцы химического состава природных минералов. Иркутск: Иркут. гос. ун-т, 1990. 220 с.
  10. Savenko A. V., Savenko V. S. Mobilization of Trace Elements from the Rocks under Action of Organic Acids. In: Abstr. 26th Annual V.M. Goldschmidt Conf. June 26 – July 1, 2016. Yokohama, 2016. P. 2751.

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