Abstract
Membrane filtration technique was applied to study the distribution of iodine and some other chemical elements (iron, manganese, aluminum, and silicon) in natural waters between different sized fractions (>0.45, 0.45–0.22, 0.22–0.1, and <0.1 μm). The paper presents analysis of factors able to modify the proportions of the adsorbed and dissolved species of the elements in waters. It is proved that up to 90% of the total amount of the iodine ion occurs in aquatic environments in the form of dissolved species (according to the current standard, in the fraction < 0.45 μm), with approximately 49% of the total concentration corresponding to the fraction of <0.10 μm. An increase in the acidity of the waters and their enrichment in finely divided organic and mineral material, and also an increase in Fe and Mn concentrations, may increase in the concentrations of the trace element in the particulate matter (up to 26% of the total iodide concentration). The greatest variations in iodine distribution between different fractions are found in the surface waters.
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Original Russian Text © L.I. Kolmykova, E.M. Korobova, B.N. Ryzhenko, V.Yu. Berezkin, V.M. Shkinev, I.N. Gromyak, 2017, published in Geokhimiya, 2017, No. 5, pp. 470–476.
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Kolmykova, L.I., Korobova, E.M., Ryzhenko, B.N. et al. Iodine differentiation between different sized fractions in natural waters. Geochem. Int. 55, 496–501 (2017). https://doi.org/10.1134/S001670291705007X
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DOI: https://doi.org/10.1134/S001670291705007X