Autor: Blinov, Sergey - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Concentrations of Natural Radionuclides (40K, 226Ra, 232Th) at the Potash Salts Deposit
Autorzy:: Menshikova, Elena
Perevoshchikov, Roman
Belkin, Pavel
Blinov, Sergey
Powiązania:: https://bibliotekanauki.pl/articles/1839161.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: soil
bottom sediment
radium
thorium
potassium
gamma spectrometer
Verkhnekamskoe potash salt deposit
Opis:: Specific activity of natural radionuclides 226Ra, 232Th and 40K was measured by gamma spectrometry in samples of soil and bottom sediments of rivers on the territory of potassium salt deposit development in order to collect information on radionuclide distribution. According to the results of examinations, the range of 226Ra, 232Th and 40K activity values in soils and bottom sediments of the territory of influence was <2.17–19.7 Bq/kg, <2.5–20.5 Bq/kg, 123–500 Bq/kg. Migration of the studied radionuclides is limited to 2 km zone. The results obtained provide useful information on the levels of naturally occurring radionuclides in the zone of influence of mining objects and are of interest for a comparative evaluation of the impact of salt mining on the radiation environment of the territory.
Źródło:: Journal of Ecological Engineering; 2021, 22, 3; 179-187
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Distribution of Trace Elements, Rare Earth Elements and Ecotoxicity in Sediments of the Kosva Bay, Perm Region (Russia)
Autorzy:: Ushakova, Evgeniya
Menshikova, Elena
Blinov, Sergey
Vaganov, Sergey
Perevoshchikov, Roman
Powiązania:: https://bibliotekanauki.pl/articles/2086373.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: trace element
rare earth elements
sedimentation
bottom sediment
ecotoxicity
acid mine drainage
Opis:: Over a long period of time, a huge amount of technogenic bottom sediments has been accumulating in the Kosva Bay with significant concentrations of amorphous iron and aluminium hydroxides, which, in turn, are active sorbents of pollutants. This study examines the distribution of trace elements and rare earth elements and their toxicity in the Kosva Bay of the Kama Reservoir (Perm Region, Russia). In the middle reach, the Kosva River crosses the Kizel coal basin, where acid mine water is discharged from closed mines. The average content of trace elements in the samples of bottom sediments of the bay varies from 0.10 mg/kg (Se) to 176.36 mg/kg (Ba). The amount of rare earth elements varies from 66.8 to 83.6 mg/kg. The ecological significance of trace elements and rare earth elements was studied using an element-by-element assessment (EF and Igeo), Potential Ecological Risk Index (RI), Mean Probable Effect Concentration Quotient (PECQ), and two bioassays (Daphnia magna Straus and Scenedesmus quadricauda (Turp.) Breb. The highest Hg enrichment was found at two sampling points. Taking into account the average value of Igeo, the pollution by Co, V, Nb, Hg, Sn, Zn, Sm, Ni, Cr, and Gd is the highest and corresponds to extremely contaminated category. The RI values indicate that pollution categories vary from moderate risk to considerable risk. According to mean PECQ values, bottom sediments of the bay have moderate potential toxicity towards biological communities. Results of chronic and acute toxicity on test objects D. magna and Scenedesmus quadricauda Breb show the water extract from bottom sediments having no effects on the test objects. The results of the study show that in order to assess the quality of bottom sediments, an integrated approach, combining chemical and ecotoxicological analyses, is needed.
Źródło:: Journal of Ecological Engineering; 2022, 23, 4; 1--16
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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