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Vol. 18 (2015 year), No. 2
Mazukhina S. I., Masloboev V. A., Chudnenko K. V., Maksimova V. V.
Results of modeling of interactions
of "water – oil" in sea and river systems of the Far East
Using physical-chemical modeling (Selector software package, Chudnenko, 2010) the investigations identified the features of interactions of oil with sea and fresh waters on objects of the Far East have been performed. The results of the modeling have confirmed the patterns found on objects of the Murmansk region but there have been some differences connected with conditions of the Far East waters chemical composition formation. The developed models can be used for the forecasting of consequences of oil spills in sea and river waters of the Far East
(in Russian, стр.6, fig. 6, tables. 0, ref 13, Adobe PDF, Adobe PDF 0 Kb)
Vol. 18 (2015 year), No. 2
Cherepanova T. A., Maksimova V. V., Gorbacheva T. T.
The change in hydrochemical composition and forms of migration of elements in the Niva River after the decrease of technogenic load
Generalization of results of monitoring the hydrochemical composition of the Niva River before and after the decrease of technogenic load (1984-1985 and 2007 accordingly) has been carried out. Chemical composition of soil waters after the snowmelt period and modification of hydrochemical composition of the Imandra Lake as possible factors influencing the river drain to the White Sea have been considered. The structure of the dissolved forms of elements in the river water has been determined by the "Selector" computer program
(in Russian, стр.8, fig. 0, tables. 3, ref 27, Adobe PDF, Adobe PDF 0 Kb)
Vol. 24 (2021 year), No. 1, DOI: 10.21443/1560-9278-2021-24-1
Maksimova V. V., Krasavtseva E. A., Masloboev V. A., Makarov D. V.
Investigation of the solubility of dust particles in soil solution at different temperatures (on the example of the tailings of the loparite ores' concentration)
A number of large mining enterprises are located on the territory of the Murmansk region. Dusting overburden dumps and tailings storage sites leads to a complex of long-term consequences for the environment. The output of the silty fraction (–0.071 mm) of "stale" tailings of loparite ore dressing (the first field of the tailing dump) is about 22 %. The investigated material is represented by nepheline, microcline, aegirine; loparite, analcime are diagnosed in impurity quantities; the average content of cerium, lanthanum, neodymium – rare earth elements of the light group – 0.18, 0.03 and 0.015 %, respectively. In laboratory conditions, a simulation of the ingress of a fine fraction of loparite ore dressing tailings into the soil has been carried out; the interaction of tailings material with distilled water and water extract from conditionally background soil at different temperatures has been studied. In the course of the study, it has been found that the introduction of dissolved organic matter intensifies the processes of destruction and partial dissolution of the aluminosilicate matrix of rock-forming minerals; an intensive transition of rare earth elements and heavy metals into soluble forms has been recorded. The research results indicate the ecological danger of the finely dispersed material of "stale" tailings of loparite ore dressing due to the ingress of dust particles into the soil and their interaction with soil waters.
(in Russian, стр.10, fig. 8, tables. 1, ref 24, AdobePDF, AdobePDF 0 Kb)