Search

Results:

Vol. 19 (2016 year), No. 1, DOI: 10.21443/1560-9278-2016-1/2

Kashulina T. G., Kashulin N. A., Dauvalter V. A.
The long-term dynamics of hydrochemical indices of low-mineralized subarctic lakes in reducing the acid load

The results of long-term studies (1990–2013) of dynamics of the main hydrochemical indices of the subarctic Shuonijavr Lake located in the zone of airborne pollution from a metallurgical plant have been considered. The following facts have been revealed: significant increase of alkalinity and acid neutralizing capacity (ANC) of the lake water; reduction in the range of seasonal fluctuations of ph and alkalinity; reduction of in the lake water during the observation period as a result of reducing the acid load due to the decrease of SO2 emission. Despite the stabilization of the lake water ANC the pollution indicators in six elements of polluters foreground for the region remain high values

(in Russian, стр.0, fig. 0, tables. 0, ref 0, Adobe PDF, Adobe PDF 0 Kb)

Vol. 22 (2019 year), No. 1, DOI: 10.21443/1560-9278-2019-22-1

Dauvalter V. A.
Lakes hydrochemistry in the zone of influence of iron-mining industry waste waters

To assess the current ecological state, a study has been conducted on the chemical composition of the lakes' waters which to varying degrees are influenced by the effluents of Olkon JSC (the town of Olenegorsk, the Murmansk region) mined and processed iron ores. The composition of the water of nearby reservoirs has undergone significant changes with the beginning of the activities of Olkon JSC. Mineralization (up to 100 mg/l) and pH values (up to 7.6) of the water of the studied lakes have increased. The qualitative composition of the water of these lakes also changed – the water class has changed from bicarbonate to sulphate. The biotites that make up the gneisses to which the ore bodies of ferruginous quartzites are confined are the main sources of cations K+ and Mg2+, and amphiboles – Ca2+ and Na+. Therefore, the increase in the content of basic ions and the mineralization of lake water is caused by the inflow of filtration water from tailing and waste dumps of Olkon JSC. The advanced content of the nitrogen group compounds (nitrate ion, ammonium ion and total nitrogen) has been recorded in the lakes' water. This increase is associated with the use of explosives containing nitrogen compounds during drilling and blasting operations for the extraction of iron ores. The content of NO3– in water of some lakes is higher than the content of the basic ions Na+, K+, Cl– in terms of equivalent concentrate ion. The flow of pollutants in the composition of wastewater has led to the suppression of biological activity and a decrease in the content of organic matter in the lake water. The highest levels of Ni, Cu, Co, Al, and Sr are recorded in lakes that receive iron ore production effluent. At the same time Fe concentrations are the smallest, which is associated with the pH value increase in the lake water (which decreases the solubility of Fe ions), and with the decrease in the content of organic material, as far as Fe in the lake waters of the Murmansk region is found mainly in the composition of organo-mineral compounds

(in Russian, стр.10, fig. 1, tables. 4, ref 18, Adobe PDF, Adobe PDF 0 Kb)

Vol. 29 (2026 year), No. 2, DOI: 10.21443/1560-9278-2026-29-2

Masloboev V. A., Mazukhina S. I., Drogobuzhskaya S. V., Sandimirov S. S., Dauvalter V. A.
On physiologic fullness of groundwater of Apatity-Kirovsky district (Murmansk Region)

The paper is a logical continuation of the study of the chemical composition of natural waters in various regions of the Murmansk region and their impact on human health. The relevance of such studies is driven by the elevated incidence of diseases in the Murmansk region. Monitoring of groundwater in the Apatity-Kirovsky district has been carried out using inductively coupled plasma mass spectrometry (ICP-MS). The paper presents the results of a hygienic assessment of groundwater from the Khibiny Massif based on the concentrations of macro- and microelements. The aim of the study is to evaluate the chemical composition of groundwater in relation to the criteria for physiologically adequate drinking waters, selected from the underground water intake and after transportation through the water supply networks. It has been established that the drinking water supplied to the population of the Apatity-Kirovsky district, both in its natural state and at the point of delivery to consumers, does not have a balanced, physiologically complete composition in terms of the content of major macro- and microelements (magnesium, calcium, bicarbonates) and the value of total mineralization, and therefore cannot be recognized as physiologically complete. Calcium and magnesium concentrations are about three orders of magnitude lower than the recommended values for waters of different categories and by the criterion of completeness. Due to the low calcium concentration, there is a need to revise the regional maximum permissible concentrations (MPC) for strontium. The waters contain rare and rare-earth elements (Zr, La, Ce, Th, etc.) for which MPCs have not been developed, and the effects of these elements on the human organism are still not sufficiently studied.

(in Russian, стр.15, fig. 3, tables. 2, ref 16, AdobePDF, AdobePDF 0 Kb)