scholarly journals Long-term dynamics of mercury pollution of the Bratsk reservoir bottom sediments, Baikal region, Russia

2019 ◽  
Vol 321 ◽  
pp. 012041 ◽  
Author(s):  
M V Pastukhov ◽  
V I Poletaeva ◽  
E N Tirskikh
Keyword(s):  
Bottom Sediments ◽  
Baikal Region ◽  
Mercury Pollution ◽  
Bratsk Reservoir

Danube Field Excursion 1988: Tritium Content of River Water; Radioactivity of Danube Sediments

1990 ◽  
Vol 22 (5) ◽  
pp. 203-210 ◽  
Author(s):  
D. Rank ◽  
F. J. Maringer ◽  
W. Papesch ◽  
V. Rajner
Keyword(s):  
River Water ◽  
Bottom Sediments ◽  
Nuclear Power ◽  
Radioactive Material ◽  
Reactor Accident ◽  
Tritium Content ◽  
Fine Sediments ◽  
Fish Samples ◽  
Field Excursion

Water, sediment, and fish samples were collected during the Danube excursion 1988, within a coordinated sampling program of the Radiology Working Group of the “Internationale Arbeitsgemeinschaft Donauforschung ” (K.Hübel, Munich; I. Kurcz, Budapest; D.Rank, Vienna). The H-3 content of the river water and the radioactivity of the bottom sediments were measured at the BVFA Arsenal, Vienna. The determined H-3 content of the Danube water corresponds with the long-term trend in the H-3 content of the hydrosphere; the values lie in the range of 3 Bq/kg downstream from Belgrade, upstream from Belgrade they are about 4 Bq/kg. It was only in the waste water plume of the nuclear power station of Kozloduj that a slightly elevated H-3 value - 6 Bq/kg - was determined. The content of the sediments of artificial radionuclides was found, at the time of the Danube field excursion, to be almost exclusively due to the radioactive material released following the reactor accident at Chernobyl in April 1986 (mainly Cs-137 and Cs-134). As a consequence of the air currents and precipitation conditions prevailing at the time of the accident, the bottom sediments in the lower course of the Danube were less contaminated than those in the upper course. The fine sediments were found to contain over 3000 Bq/kg of Cs-137 in the upper course of the Danube.

Soil and ecological division into districts of the Baikal region

2018 ◽  
Vol 940 (10) ◽  
pp. 54-64 ◽  
Author(s):  
I.A. Belozertseva ◽  
A.A. Sorokovoj
Keyword(s):  
Baikal Region ◽  
Soil Cover ◽  
Soil Formation ◽  
Forest Steppe ◽  
Leading Role ◽  
Soil Cover Structure ◽  
Reflecting Surface ◽  
Heat And Moisture ◽  
Made In

On the basis of long-term researches of soils in the territory of Russia and Mongolia soil and ecological division into districts of the Baikal region is carried out. At division into districts the whole set of an environment of soil formation was considered. On the map of soil and ecological division into districts 13 mountain, mid-mountain, low-mountain taiga, foothill, hollow-valley, forest-steppe and steppe provinces reflecting surface device originality as the ratio of balance of heat and moisture forming a basis to zoning is shown against the background of difficult orography are allocated. In total 42 districts on lithologic-geomorphological features are allocated. In formation of distinctions of a soil cover of these provinces the leading role is played by bioclimatic factors and inside them the lithologic-geomorphological ones. In the view of structural approach of the district they are considered as territories with a certain natural change of several types of the soil cover structure caused by features of a relief and the parent rock. The map is made in the MapInfo program. It is revealed that on ill-defined width zoning of soils the vertical one which has a greater influence on soils of this region is imposed. Soils of the Baikal region are not similar to the soils located at the same latitude of the flat European territory of Russia. Zone soils of this territory are specific and original.

Sulfur-modified biochar as a soil amendment to stabilize mercury pollution: An accelerated simulation of long-term aging effects

2020 ◽  
Vol 264 ◽  
pp. 114687 ◽  
Author(s):  
Bin Zhao ◽  
David O’Connor ◽  
Zhengtao Shen ◽  
Daniel C.W. Tsang ◽  
Jörg Rinklebe ◽  
...  
Keyword(s):  
Soil Amendment ◽  
Mercury Pollution ◽  
Aging Effects ◽  
Accelerated Simulation ◽  
Modified Biochar

Chlorine bleaches: A significant long term source of mercury pollution

1975 ◽  
Vol 4 (3-4) ◽  
pp. 461-463 ◽  
Author(s):  
Sanford M. Siegel ◽  
Alan Eshleman
Keyword(s):  
Mercury Pollution

Middle Holocene Fishing and Hunting in the Baikal Region of Siberia

2015 ◽  
Author(s):  
Robert S. Losey ◽  
M. Anne Katzenberg ◽  
Tatiana Nomokonova
Keyword(s):  
Baikal Region ◽  
Faunal Remains ◽  
Regional Variability ◽  
Middle Holocene ◽  
Long Term Stability ◽  
Terrestrial Mammals ◽  
Isotope Evidence ◽  
Isotope Studies ◽  
Potential Food

This chapter shows how a combination of zooarchaeological and stable isotope evidence documents substantial but variable use of aquatic resources by Middle Holocene foragers inhabiting the Cis-Baikal region of Eastern Siberia. We first outline potential food items—including terrestrial mammals, riverine and lacustrine fish, the Baikal freshwater seal, and some plant foods. Faunal remains exist from both habitation sites and cemeteries. Habitation site assemblages show subsistence practices at seasonally occupied locations, with composition varying within the region. Some cemetery assemblages are taxonomically richer, indicating that small mammals and waterfowl were also important. Stable nitrogen and carbon isotope studies of human skeletal collections document substantial use of aquatic foods. Regional variability in the use of aquatic foods is evident, but there is little clear evidence for Middle Holocene dietary shifts. Instead, there appears to have been long-term stability with some regional variation related to resource availability.

scholarly journals The effect of long-term mercury pollution on the soil microbial community

2001 ◽  
Vol 36 (1) ◽  
pp. 11-19 ◽  
Author(s):  
Anne Kirstine Müller ◽  
Kamma Westergaard ◽  
Søren Christensen ◽  
Søren Johannes Sørensen
Keyword(s):  
Microbial Community ◽  
Soil Microbial Community ◽  
Mercury Pollution ◽  
Soil Microbial

scholarly journals Reconstruction of the Long-Term Dynamics of Particulate Concentrations and Solid–Liquid Distribution of Radiocesium in Three Severely Contaminated Water Bodies of the Chernobyl Exclusion Zone Based on Current Depth Distribution in Bottom Sediments

Land ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 29
Author(s):  
Alexei Konoplev ◽  
Gennady Laptev ◽  
Yasunori Igarashi ◽  
Hrigoryi Derkach ◽  
Valentin Protsak ◽  
...  
Keyword(s):  
Bottom Sediments ◽  
Sediment Cores ◽  
Temporal Trends ◽  
Water Bodies ◽  
Contaminated Water ◽  
Exclusion Zone ◽  
Liquid Distribution ◽  
Diffusional Model ◽  
Solid Liquid

Given the importance of understanding long-term dynamics of radionuclides in the environment in general, and major gaps in the knowledge of 137Cs particulate forms in Chernobyl exclusion zone water bodies, three heavily contaminated water bodies (Lakes Glubokoe, Azbuchin, and Chernobyl NPP Cooling Pond) were studied to reconstruct time changes in particulate concentrations of 137Cs and its apparent distribution coefficient Kd, based on 137Cs depth distributions in bottom sediments. Bottom sediment cores collected from deep-water sites of the above water bodies were sliced into 2 cm layers to obtain 137Cs vertical profile. Assuming negligible sediment mixing and allowing for 137Cs strong binding to sediment, each layer of the core was attributed to a specific year of profile formation. Using this method, temporal trends for particulate 137Cs concentrations in the studied water bodies were derived for the first time and they were generally consistent with the semiempirical diffusional model. Based on the back-calculated particulate 137Cs concentrations, and the available long-term monitoring data for dissolved 137Cs, the dynamics of 137Cs solid–liquid distribution were reconstructed. Importantly, just a single sediment core collected from a lake or pond many years after a nuclear accident seems to be sufficient to retrieve long-term dynamics of contamination.

Long-Term Dynamics of the Macrozoobenthos and Plant Pigments in Bottom Sediments of Rybinsk Reservoir

2020 ◽  
Vol 47 (1) ◽  
pp. 80-86
Author(s):  
L. E. Sigareva ◽  
S. N. Perova ◽  
N. A. Timofeeva
Keyword(s):  
Bottom Sediments ◽  
Rybinsk Reservoir ◽  
Plant Pigments
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