ASSESSMENT OF TOXICITY AND POLLUTION OF BOTTOM SEDIMENTS IN THE NORTHWESTERN PART OF THE BLACK SEA WITH HEAVY METALS

2017 ◽  
Vol 22 (2(41)) ◽  
pp. 41-51
Author(s):  
С. Е. Дятлов ◽  
А. В Кошелев ◽  
С. А. Запорожец ◽  
Е. А. Лукьянова
Keyword(s):  
Heavy Metals ◽  
Black Sea ◽  
Bottom Sediments ◽  
The Black Sea ◽  
Northwestern Part

scholarly journals Peculiarities of Pollution by Some Persistent Organic Pollutants of the Marine Environment of the Northwestern Part of the Black Sea

2020 ◽  
Keyword(s):  
Black Sea ◽  
Marine Environment ◽  
Bottom Sediments ◽  
Sea Water ◽  
Marine Pollution ◽  
Marine Organisms ◽  
The Black Sea ◽  
Northwestern Part ◽  
Marine Biota ◽  
Ecological State

Purpose. The study is aimed at estimation of marine pollution in the northwestern part of the Black Sea by some persistent organic pollutants (POPs), in particular polychlorinated biphenyls (PCBs) and hexachlorobenzene (HCB). Methods. Peculiarities of marine pollution were determined on the basis of research conducted at the Ukrainian Scientific Center of Ecology of the Sea (UkrSCES). The content of PCBs and HCB was determined on a gas chromatograph Agilent 7890B with a capillary column and an electronic capture detector using the methods of the US Environmental Protection Agency (EPA-3545A, 3630C, 8081, 8082A, 8275A). The ecological state of the marine environment was determined using developed in UkrSCES the “Ecological standards of marine environment quality”, which allow us to assess the quality status of such components of the marine environment (sea water, bottom sediments and biota). Results. The methodology of environmental standards has been adapted to assess the pollution of the marine environment of POPs. The ecological state of sea water and bottom sediments of the northwestern part of the Black Sea is determined according to the established values of Maximum Concentration Limit (MCL) and Ecological Standards (ES). The ecological state of marine biota was assessed by HCB pollution according to the established Ecological Standard. The European analogue of MCL (MAC-EQS) for industrial marine organisms was used to assess the ecological state of marine organisms for PCBs pollution (but it should be noted that the assessment was performed only for non-dioxin-like PCBs. Standard for the content of PCBs in marine organisms, in particular, – of industrial importance, must be implemented in Ukraine at the legislative level. For integral assessment of the ecological state of the marine environment and the specifics of POPs pollution in the northwestern part of the Black Sea, it is necessary to introduce a comprehensive monitoring system that would analyze marine pollution by all POPs required by the Stockholm Convention. Conclusions. The ecological state of the sea water of the northwestern part of the Black Sea by POPs pollution in most cases corresponds to the category "very good". The state of marine biota in most cases corresponds to the quality classes "good" and "very good", but in Ukraine there are no clear standards that would regulate the content of PCBs in marine biota, in particular – for industrial important species of marine organisms. The ecological condition of bottom sediments is mainly classified as "satisfactory" and "poor", which under certain natural conditions can be a source of secondary pollution of sea water and biota. For integral assessment of the ecological state, it is necessary to take into account all POPs, which can significantly change the results of the assessment of the quality of the marine environment of the northwestern part of the Black Sea.

Heavy metals in sinking particles and bottom sediments from the eastern Turkish coast of the Black Sea

2008 ◽  
Vol 78 (2) ◽  
pp. 396-402 ◽  
Author(s):  
H.A. Ergül ◽  
S. Topcuoğlu ◽  
E. Ölmez ◽  
Ç. Kırbaşoğlu
Keyword(s):  
Heavy Metals ◽  
Black Sea ◽  
Bottom Sediments ◽  
The Black Sea ◽  
Sinking Particles

Specific features of the distribution of heavy metals in bottom sediments in the Northeast part of the Black Sea

2011 ◽  
Vol 21 (1) ◽  
pp. 63-73
Author(s):  
A. I. Ryabinin ◽  
S. A. Shibaeva ◽  
E. A. Danilova
Keyword(s):  
Heavy Metals ◽  
Black Sea ◽  
Bottom Sediments ◽  
The Black Sea

scholarly journals Heavy metals in the bottom sediments of the Tendrivska bay

2020 ◽  
Vol 16 (3) ◽  
pp. 53-63
Author(s):  
V.O. YEMELIANOV ◽  
Ye.I. NASEDKIN
Keyword(s):  
Heavy Metals ◽  
Particle Size ◽  
Black Sea ◽  
Bottom Sediments ◽  
Biosphere Reserve ◽  
Water Area ◽  
Coastal Sediments ◽  
Hydrodynamic Characteristics ◽  
The Black Sea ◽  
Water Supply Systems

The article describes several research results of geoecological direction, which included field sampling of bottom sediments, soils, coastal sediments at different sites within the territory of the Black Sea Biosphere Reserve NAS of Ukraine, in particular, the Tendrivska and Yahorlitska bays. The complex of the laboratory works included determination of chemical, microelement, particle size distribution composition of samples and study of their material characteristics on a scanning electron microscope. The study of the ecological state of the Reserve’s bottom sediments, as well as comparison of pollutant content in sediments of various parts of the protected water area was based, in particular, on determining the concentrations a few heavy metals (copper, nickel, zinc, lead, tin). The choice of research objects was determined by the peculiarities of the organization of agricultural activities within the arable lands bordering the boundaries of this reserve. The results obtained showed a significant impact of the geomorphological structure of the area and hydrodynamic characteristics of certain areas of the water area within it on the distribution of the material component of bottom sediments. The mineral and particle-size composition of bottom sediments should be considered the main factor in the uneven distribution of microelement concentrations, which in turn is determined by the location of zones of coastal erosion and sediment accumulation. Insignificant relative excesses of the copper content in the surface layer of the bottom sediments of the water area, fixed in the northern part of the Tendrivska Bay, can be connected with the discharge of fresh water from the network of canals, which is part of the agro complexes for rice cultivation, as well as “tailings” of water from the water supply systems of the Krasnoznam’yanska irrigation system. Studies have also shown that the content of most heavy metals in the upper layer of bottom sediments in the Black Sea Biosphere Reserve is lower than the average figures for modern Black Sea bottom sediments presented in literature sources.

scholarly journals On conditions of hyperhaline basins of the Taman’ coast of the Black Sea

2016 ◽  
Vol 1 (4) ◽  
pp. 40-43
Author(s):  
Zh. P. Selifonova ◽  
V. K. Chasovnikov
Keyword(s):  
Heavy Metals ◽  
Black Sea ◽  
Bottom Sediments ◽  
Maximum Allowable Concentration ◽  
Oil Products ◽  
The Black Sea ◽  
Guideline Values ◽  
First Time ◽  
Natural Territory

The researches of hydrochemistry of water and bottom sediments on pollutants and plankton in hypersalinic Solenoe Lake and Gor’kiy Liman were carried out for the first time. In July 2010 the waters of these basins were characterized by excess of maximum allowable concentration for heavy metals, phenols, biological consumption of oxygen, the bottom sediments — in excess of soil guideline values for heavy metals and oil products. The bloom by the euglenoid Eutreptia sp. was noted in Gor’kiy Liman. Using the parameters of density of the halophilic crustacean Artemia (from 35 to 126 thousand ind./m3, on average 72.7 thousand ind./m3) and of curative property of a brine (166–199 ‰), the ultrahalinic lake Solenoe can be assigned to the group of reservoirs having important regional value. This basin should be included in the specially-protected natural territory “Anapa Spit”.

Significance of Mineralogical and Lithologic-Petrographical Rank in the Ranking of Geological Information

2020 ◽  
Vol 42 (4) ◽  
pp. 33-49
Author(s):  
O.V. CHEPIZHKO ◽  
V.V. YANKO ◽  
V.M. KADURIN ◽  
I.M. NAUMKO ◽  
S.M. SHATALIN
Keyword(s):  
Fluid Flow ◽  
Black Sea ◽  
Bottom Sediments ◽  
Oil And Gas ◽  
Sedimentary Cover ◽  
Geochemical Characteristics ◽  
The Black Sea ◽  
Flow Parameters ◽  
Geochemical Parameters ◽  
Geological Information

For the first time the importance of mineralogical and lithological-petrographical ranks in the line of geological information ranks is substantiated for implementation of long-term forecasts, standard and non-standard approaches to research of physical and geochemical parameters as a basis of creation of complex system of forecast criteria and prospecting indicators of hydrocarbons within the sedimentary cover of Black sea based on the theory of global fluid-flows derivation. These criteria have different sensitivity to the object (hydrocarbon deposits) and are therefore ranked. The ranking determined the following parameters: 1) seismic data within the object, obtained by the method of deep seismic sounding, RWM SDP; 2) parameters of tectono-geodynamic structures; 3) the main characteristics of sedimentary cover and bedrock; 4) geochemical characteristics; 5) parameters of mineral complexes and fluid inclusions in mineral neoformations; 6) the value of the distribution of meiobenthos. Based on modern views of oil and gas geology, structural-tectonic and lithological-facies criteria are among the main ones. The study of the mineralogical component of sediments is made with using mineralogical, thermobarogeochemical and X-ray spectral methods. Fixation of anomalies of fluid flow at the bottom of the Black Sea as to the distribution of abiotic parameters in order to assess the prospects of oil and gas is determined by structural and tectonic features and high permeability of fluid flow; parameters of mineral complexes (minerals, facies) and genetic connections; heterogeneity of geochemical characteristics of bottom sediments; the presence of hydrocarbon inclusions in authigenic minerals of bottom sediments.

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