scholarly journals Microbial Load as Ecotoxicological Assessment of Heavy Metals Presence in Soil Samples from the Kazakhstan Part of the Caspian Sea

2017 ◽  
Vol 19 (4) ◽  
pp. 335
Author(s):  
N.Sh. Akimbekov ◽  
A.K. Yernazarova ◽  
K.T. Tastambek ◽  
G.Zh. Abdieva ◽  
P.S. Ualieva ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Caspian Sea ◽  
High Speed ◽  
Soil Microbial Communities ◽  
Urban Ecosystems ◽  
Soil Samples ◽  
Soil Toxicity ◽  
Residential Areas ◽  
The Caspian Sea ◽  
Toxicological Assessment

Soil as a natural resource and a powerful regulator of matter flow, plays crucial role in providing habitat for proper structuring and functioning soil microbial communities. Under the influence of unregulated industrial activities with social-economic co-development, soil and water involved a whole range of changes leading to soil erosion-degradation and pollution of aquatic ecosystems. One of the most promising techniques for determining the total effect of exposure to heavy metals on environmental media is bio-indication (bio-testing), which is based on rapid, robust and cost-effective methods. Acquaintance, with the microbial background of soil is essential to assess the degree of soil pollution with heavy metals. In this study, an eco-toxicological assessment using microbial community characteristics on heavy metals in soil samples from the urban ecosystems of the Kazakhstan part of the Caspian Sea (Atyrau and Mangystau regions) has been discussed. According to the results of the soil toxicity, it has been established that the soil of these residential areas are exposed to increased levels of heavy metals, such as Cr, Co, Ni, Pb, etc. Comparative analysis of bio-indicative systems and chemical techniques for assessing the quality of soils indicated a remarkable similarity of the results and the priority (high speed, cheapness) of the microbiological load assessment of the soil quality.

Distribution and ecological risk assessment of heavy metals in surface sediments along southeast coast of the Caspian Sea

2014 ◽  
Vol 81 (1) ◽  
pp. 262-267 ◽  
Author(s):  
Kazem Darvish Bastami ◽  
Hossein Bagheri ◽  
Vahid Kheirabadi ◽  
Ghasem Ghorbanzadeh Zaferani ◽  
Mohammad Bagher Teymori ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Ecological Risk ◽  
Ecological Risk Assessment ◽  
Caspian Sea ◽  
Surface Sediments ◽  
The Caspian Sea ◽  
Southeast Coast

scholarly journals Analysis of Heavy Metals Concentration in Soil and Litchens from Various Localities of Hosur Road, Bangalore, India

2009 ◽  
Vol 6 (1) ◽  
pp. 13-22 ◽  
Author(s):  
Abida Begum ◽  
M. Ramaiah ◽  
Harikrishna ◽  
Irfanulla Khan ◽  
K. Veena
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Content ◽  
Metal Accumulation ◽  
Geoaccumulation Index ◽  
Dry Weight ◽  
Heavy Metal Accumulation ◽  
Soil Samples ◽  
Residential Areas ◽  
Industrial Areas

Assessment of heavy metal content in litchens and soil samples from various localities of Hosur Road, Bangalore south was undertaken. Topsoil samples (0-10 cm) were taken at various locations, the metals analysed were Cr, Pb, Fe, Zn, Ni and Cu. The geoaccumulation index of these metals in the soils under study residential areas indicated that they are uncontaminated with Ni, Zn, and Fe and moderately contaminated with Cr and Pb. In Industrial areas and traffic junctions the concentration of Fe, Pb and Ni was maximum. Heavy metal accumulation in few prominent lichens of some localities was analysed. Cr and Pb were maximum inChrysothrix candelaris(L.) Laundon, at the gardens of Madiwala and Silk Board junction with 95.29 and 623.95 µg g–1dry weight respectively. Fe and Cu were maximum inBulbothrix isidiza(Nyl.). Hale andPyxine petricolaNyl at Central Prison campus and Kendriya Sadan campus with 22721 and 338.12 µg g–1dry weight respectively,Lecanora perplexaBrodo at Infosis and Wipro Campus, electronic city have 531.5 and 634 µg g–1dry weight of Zn. While Ni and Fe were maximum in Arthopyreniaceae at Shanti Niketan of MICO Limited with 1100 and 23200 µg g–1dry weight respectively.

DETERMINATION OF HEAVY METALS IN WATER SAMPLES TAKEN FROM THE SHIKH AREA OF THE CASPIAN SEA USING ICP-MS (7500CX) DEVICE

Alchemist ◽  
2020 ◽  
Vol 1 (2) ◽  
pp. 19-24
Author(s):  
S.R. Hajiyeva ◽  
◽  
T.I. Aliyeva ◽  
N.M. Cafarova
Keyword(s):  
Heavy Metals ◽  
Environmental Monitoring ◽  
Water Samples ◽  
Caspian Sea ◽  
Research Laboratory ◽  
Marine Water ◽  
The Caspian Sea ◽  
Icp Ms ◽  
Analytical Research

Water samples were taken from the Shikh shore of the Caspian Sea to conduct the research. In the marine water samples taken from the area, heavy metals were identified using the Agilent 7500 Series ICP-MS device. The analyzes were performed in the Complex Analytical Research Laboratory of the National Department of Environmental Monitoring

scholarly journals Evaluation of Heavy Metals Contamination in Agricultural Soils

2021 ◽  
Author(s):  
Jyoti Rani ◽  
Sudesh Chaudhary ◽  
Tripti Agarwal
Keyword(s):  
Heavy Metals ◽  
Organic Carbon ◽  
Agricultural Soil ◽  
Agricultural Soils ◽  
Contamination Factor ◽  
Soil Samples ◽  
National Capital Region ◽  
Residential Areas ◽  
Heavy Metals Contamination ◽  
Irrigated Soils

Abstract The present study was conducted to assess heavy metals contamination in agricultural soils in the National Capital Region, Delhi. A total of 84 soil samples were collected from selected agricultural areas located near industries, national highways, state highways, Yamuna floodplain, residential complexes, and wastewater irrigated soils. Heavy metal concentrations (Al, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, and Zn), pH, and organic carbon (%) were analyzed in the collected soil samples. The average value of pH and organic carbon in the soil samples collected were 7.79±0.49 and 0.53±0.17 percent. Average concentrations of heavy metals in soils were found to be in the order of Fe> Al>Mn> Zn> Ni>Cr> Cu>Pb> Co> Cd with value as 14916.92 mg kg -1 , 13538.87 mg kg -1 , 277.16 mg kg -1 , 74.53 mg kg -1 , 35.34 mg kg -1 , 33.68 mg kg -1 , 22.94 mg kg -1 , 18.45 mg kg -1 , 1.88 mg kg -1 , and 0.92 mg kg -1 . A very high concentration of Fe (6640.09-32650.23 mg kg -1 ), Al (5631-27209.99 mg kg -1 ), Mn (73.8-735.72 mg kg -1 ), Zn (16.45-221.88 mg kg -1 ), Ni (7.63-192.63 mg kg -1 ), and Cr (9.65-127.21 mg kg -1 ) were recorded in agricultural soil samples. The average concentrations of Mn, Ni, and Zn in the soil samples were several times higher than their concentration in Indian natural background soils. A significant potential ecological risk has been noticed in nearly all the agricultural soil samples except for the samples collected nearby residential areas. The contamination factor has shown that most of the soil samples were moderately contaminated with Mn, Ni, Fe, and Cr and some soil samples were considerably to strongly contaminated with Cd, Zn, Pb, and Ni. Wastewater irrigated soils showed a moderate to a strong degree of accumulation of heavy metals (Cd, Ni, and Zn).

scholarly journals Spatial distribution of sediment pollution in the Khajeh Kory River using Kriging and GIS

2015 ◽  
Vol 18 (2) ◽  
pp. 173-179 ◽  
Author(s):  
Maryam Zare
Keyword(s):  
Heavy Metals ◽  
Caspian Sea ◽  
River Sediments ◽  
Sediment Pollution ◽  
Kriging Method ◽  
Icp Oes ◽  
The Caspian Sea ◽  
River Bed ◽  
Information Layer ◽  
Del Rio

<p>The aim of this research was to study of sediment pollution conditions in the river bed of Khajeh Kory, which passes from the southern border of the Caspian Sea in Astara City. To determine the pollution of river bed sediment along the route, from the river source in the heights to estuary in the Caspian sea, sampling was conducted at 10 stations. Afterward, each sample was divided into two groups based on size (&gt;63 µm and &lt;63 µm). The concentration of heavy metals Cu, Cd, Co, Zn, Pb, Ni, Fe, and Mn in each group was measured using ICP-OES. In the next stage, the enrichment of samples was determined by normalization with aluminum. The data were then interpolated using the Kriging method and various models (including spherical, circular, exponential, Gaussian) were fitted to the data, and the best method was selected using the Cross Validation method. Using the obtained enrichment outcomes, an information layer was produced for each element in the GIS environment utilizing the Kriging method. The layers were aggregated and the compiled layer was  classified into 4 layers again. Using this method, the length of the river from its source to the sea estuary was characterized based on the contamination of heavy metals, and contaminated and unpolluted areas in river sediments could be observed. The source of this pollution, either natural or manmade, was revealed through this method.</p><p> </p><p><strong>Resumen</strong></p><p>El objeto de esta investigación fue estudiar las condiciones de contaminación sedimentaria en el lecho del río Khajeh Kory, que se extiende desde el borde sur del Mar Caspio en la ciudad de Astara. Para determinar la contaminación del lecho sedimentario, se recolectaron muestras en 10 estaciones establecidas entre la fuente del río en sus partes altas hasta los estuarios en el Mar Caspio. Después, cada muestra fue dividida en dos grupos de acuerdo con el tamaño (&gt;63 µm and &lt;63 µm). La concentración de metales pesados Cu, Cd, Co, Zn, Pb, Ni, Fe y Mn en cada grupo se midió con la técnica ICP-OES. En la siguiente etapa, se determinó el enriquecimiento de las muestras por la normalización con aluminio. Los datos se interpolaron luego con el método Kriging y varios modelos (incluidos el esférico, el circular, el exponencial, el gaussiano) se ajustaron a la información y se seleccionó el mejor método a través de la Validación Cruzada. Con los resultados obtenidos del enriquecimiento se produjo una capa de información para cada elemento en el ambiente GIS a través del método Kriging. Las capas fueron agregadas y la compilación de estas se clasificó nuevamente en otras cuatro capas. De esta forma se caracterizó el río a lo largo, desde su nacimiento hasta el estuario marino, con base en la contaminación de metales pesados y se pudo distinguir entre las zonas contaminadas y las áreas limpias en sedimentos. Las fuentes de esta contaminación, sean naturales o humanas, también se identificaron con este método.</p>

scholarly journals SPECIFIC FEATURES OF DISTRIBUTION OF MINERALS IN ORGANS AND TISSUES OF HERRING SPECIES (CLUPEIDAE) IN CASPIAN SEA

2021 ◽  
Vol 2021 (1) ◽  
pp. 100-106
Author(s):  
Tatiana Ershova ◽  
Vyacheslav Fedorovich Zaitsev ◽  
Vladimir Chaplygin ◽  
Asylbek Shakhmuratovich Kanbetov
Keyword(s):  
Heavy Metals ◽  
Caspian Sea ◽  
Chemical Elements ◽  
Electrothermal Atomization ◽  
The Caspian Sea ◽  
Lead And Cadmium ◽  
Zinc Cadmium ◽  
Definition Of ◽  
Cadmium And Lead ◽  
Standard Techniques

Research objective was to identify the specific features of distribution of microelements (zink, manganese, lead, cadmium) in organs and tissues of black-backed shad Alosa kessleri kessleri (Grimm, 1887) and Dolginsky herring Alosa braschnikowii braschnikowii (Borodin, 1904) caught in the Caspian Sea. Accumulated in the tissues and organs of fish in concentrations exceeding the maximum permissible limits, heavy metals pose a danger to human health. Sampling was carried out by the standard techniques, definition of minerals was made by method of atomic and absorbing spectroscopy using an atomic and absorbing spectrometer with electrothermal atomization of MGA-915 MD. The analysis of the obtained data showed that distribution of minerals in the organs and tissues of the studied herring species had a similar pattern: the highest concentrations of minerals were registered in the gills and liver, the smallest - in muscle tissue. In comparison with black-backed shad the organs and tissues of Dolginsky herring had higher concentrations of chemical elements. Zinc has been found to accumulate mainly in the liver; manganese, lead and cadmium - in the gills. Accumulation of zinc, cadmium and lead in the studied bodies and tissues of fishes exceeded acceptable level.

scholarly journals Assignment of Concentration of Heavy Metals (Cr, Zn, Cd, Pb) In Sediments of Gorgan Bay and South East the Caspian Sea (Golestan Province-Iran)2010-2011

2013 ◽  
Vol 1 (2) ◽  
pp. 27-31
Author(s):  
Mahmood Saghali ◽  
Rauf Baqraf ◽  
Parisa NejatkhahManavi ◽  
S.Abbas Hosseini ◽  
Rahman Patymar
Keyword(s):  
Heavy Metals ◽  
Caspian Sea ◽  
The Caspian Sea ◽  
Golestan Province ◽  
Gorgan Bay

scholarly journals DISTRIBUTION OF SEVERAL HEAVY METALS (Cu, Zn, Ni, Co, Cr, Pb, Fe AND Mn) IN SURFACE LAYER OF B SEDIMENTS OF THE MIDDLE AND SOUTHERN CASPIAN SEA

2019 ◽  
Vol 47 (5) ◽  
pp. 26-51
Author(s):  
V. V. Gordeev ◽  
N. V. Kozina ◽  
G. N. Baturin
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Surface Layer ◽  
Chemical Composition ◽  
Atomic Absorption ◽  
Bottom Sediments ◽  
Caspian Sea ◽  
The Caspian Sea ◽  
Sediment Samples ◽  
Southern Caspian Sea

Atomic absorption determinations of a group of heavy metals (Cu, Zn, Ni, Co, Cr, Pb, Fe, Mn) in 190 samples of surface bottom sediments of the Middle and Southern Caspian Sea that were sampled by crab in middle of XX century (the collection of G.N. Baturin) and in 30 samples of recent sampling by grab also (2012–2015) were carried out. The aim of the investigations was to construct the schematic maps of heavy metal distribution in bottom sediments of both parts of the Caspian Sea on the materials of a half of century prescription that may serve as a base for comparison with the data of recent researches in frameworks of the program “The Caspian Sea System” under leadership of academic A.P.Lisitzin from 2012 till present time. The comparison between chemical composition of old and new sediment samples was realized, their similarities and divergences were revealed and probable reasons of divergences were presented. The maps of distribution of several metals (Fe, Mn, Co, Cr) are submitted together with necessary for interpretation maps of CaCO3, Corg and some other. It was shown that the structure of maps for all metals investigated was very similar because all these metals had concern to the group of iron.

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