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Stepanets, Oleg V; Ligaev, Alexander N; Borisov, Alexander P; Travkina, A V; Shkinev, V M; Danilova, T V; Miroshnikov, Alexsey Y; Migunov, V I (2009): Geochemistry and radionuclide content of sediment and water samples obtained from the Ob and Irtysh river, Russia [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.792699, Supplement to: Stepanets, OV et al. (2009): Geoecological investigations of the Ob-Irtysh river basin in the Khanty-Mansi autonomous region: Yugra in 2006-2007. Geochemistry International, 47(7), 657-671, https://doi.org/10.1134/S0016702909070027

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Abstract:
This paper reports the results of the investigations of 2006-2007 on the distribution and migration forms of artificial radionuclides and chemical elements in the Ob-Irtysh water system. Three regions were studied. One of them is a local segment of the Ob River upstream from the confluence with the Irtysh River; its investigation allowed us to estimate the general radioecological state of the aquatic environment affected by the activity of the Tomsk 7 plant. The second region is a local segment of the Irtysh River upstream from its confluence with the Ob River, where the influence of emissions from the NPO Mayak could be estimated. The third region is the water area of the Ob River after its confluence with the Irtysh River. It characterizes the real level of radioactive and chemical contamination of the middle reaches of the Ob River. In order to explain horizontal variations in the distribution of radionuclides in the upper layer of bottom sediments collected at various sites, the results of sorption-kinetic experiments with radioactive tracers in the precipitate-solution system were used. The investigation of the migration forms of trace elements and radionuclides occurring in river water was based on the method of tangential-flow membrane filtration.
Chemical element contents were determined in 400-ml water samples. A set of Millipore polysulfone membranes with pore sizes of 8, 1.2, 0.45, 0.1, and 0.025 µm was employed. Taking into account the ultralow specific concentrations of radionuclides in the water, they were analyzed in 300-500 litre samples using Millipore polysulfone membranes with pore sizes of 0.45 µm and 15 kDa. This allowed us to estimate the percentages of cesium-137 and plutonium-239, 240 in the suspended particulate fraction, colloids, and dissolved species.
Project(s):
Archive of Ocean Data (ARCOD)
Coverage:
Median Latitude: 61.010822 * Median Longitude: 68.868906 * South-bound Latitude: 60.616700 * West-bound Longitude: 68.283300 * North-bound Latitude: 61.333300 * East-bound Longitude: 69.666700
Date/Time Start: 2006-09-30T00:00:00 * Date/Time End: 2007-05-01T00:00:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
6 datasets

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Datasets listed in this publication series

  1. Stepanets, OV; Ligaev, AN; Borisov, AP et al. (2009): (Table 3) Grain size composition of sediment samples obtained from the Ob and Irtysh River. https://doi.org/10.1594/PANGAEA.792694
  2. Stepanets, OV; Ligaev, AN; Borisov, AP et al. (2009): (Table 2) Temperature, pH and redox potential of water samples obtained from the Ob and Irtysh River. https://doi.org/10.1594/PANGAEA.792693
  3. Stepanets, OV; Ligaev, AN; Borisov, AP et al. (2009): (Table 4) Radionuclide composition of sediment samples obtained from the Ob and Irtysh River. https://doi.org/10.1594/PANGAEA.792695
  4. Stepanets, OV; Ligaev, AN; Borisov, AP et al. (2009): (Table 6) Major and trace element concentrations in water samples obtained from the Ob and Irtysh River. https://doi.org/10.1594/PANGAEA.792697
  5. Stepanets, OV; Ligaev, AN; Borisov, AP et al. (2009): (Table 5) Radionuclide concentration in water samples obtained from the Ob and Irtysh River. https://doi.org/10.1594/PANGAEA.792696
  6. Stepanets, OV; Ligaev, AN; Borisov, AP et al. (2009): (Table 7) Major and trace element concentrations in water samples obtained at varying distances from the Ob River bank. https://doi.org/10.1594/PANGAEA.792698