scholarly journals Lead compounds in bottom sediments of the Seversky Donets floodplain

2020 ◽  
Vol 169 ◽  
pp. 01004
Author(s):  
Marina Burachevskaya ◽  
Dina Nevidomskaya ◽  
Victoria Tsitsuashvili ◽  
Vishnu Rajput ◽  
Dmitry Bren
Keyword(s):  
Heavy Metals ◽  
Organic Matter ◽  
Bottom Sediments ◽  
Anthropogenic Activities ◽  
High Mobility ◽  
Environmental Risks ◽  
Layered Silicates ◽  
Sequential Fractionation ◽  
Settling Basin ◽  
Lead Compounds

Investigations on heavy metals in water bodies are extremely important in a comprehensive assessment when the anthropogenic activities disturb the natural environment. The present paper studies the composition of Pb compounds in highly contaminated bottom sediments of a natural settling basin of a chemical plant at the Atamanskoye lake in the floodplain of the Seversky Donets River by sequential fractionation. The predominance of the residual Pb fraction, which is represented by layered silicates (hydromuscovite, montmorillonite, kaolinite) is shown. Organic matter and Fe-Mn (hydr)oxides also play an important role in metal interaction. High mobility of Pb is noted, which associated with imposing high environmental risks in the studied area.

scholarly journals Fractionation of Heavy Metals in Multi-Contaminated Soil Treated with Biochar Using the Sequential Extraction Procedure

Biomolecules ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 448
Author(s):  
Mahrous Awad ◽  
Zhongzhen Liu ◽  
Milan Skalicky ◽  
Eldessoky S. Dessoky ◽  
Marian Brestic ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Organic Matter ◽  
Soil Organic Matter ◽  
Soil Ph ◽  
Contaminated Soil ◽  
Contaminated Soils ◽  
Extraction Procedure ◽  
Sequential Fractionation ◽  
Relationship Of ◽  
The Relationship

Heavy metals (HMs) toxicity represents a global problem depending on the soil environment’s geochemical forms. Biochar addition safely reduces HMs mobile forms, thus, reducing their toxicity to plants. While several studies have shown that biochar could significantly stabilize HMs in contaminated soils, the study of the relationship of soil properties to potential mechanisms still needs further clarification; hence the importance of assessing a naturally contaminated soil amended, in this case with Paulownia biochar (PB) and Bamboo biochar (BB) to fractionate Pb, Cd, Zn, and Cu using short sequential fractionation plans. The relationship of soil pH and organic matter and its effect on the redistribution of these metals were estimated. The results indicated that the acid-soluble metals decreased while the fraction bound to organic matter increased compared to untreated pots. The increase in the organic matter metal-bound was mostly at the expense of the decrease in the acid extractable and Fe/Mn bound ones. The highest application of PB increased the organically bound fraction of Pb, Cd, Zn, and Cu (62, 61, 34, and 61%, respectively), while the BB increased them (61, 49, 42, and 22%, respectively) over the control. Meanwhile, Fe/Mn oxides bound represents the large portion associated with zinc and copper. Concerning soil organic matter (SOM) and soil pH, as potential tools to reduce the risk of the target metals, a significant positive correlation was observed with acid-soluble extractable metal, while a negative correlation was obtained with organic matter-bound metal. The principal component analysis (PCA) shows that the total variance represents 89.7% for the TCPL-extractable and HMs forms and their relation to pH and SOM, which confirms the positive effect of the pH and SOM under PB and BB treatments on reducing the risk of the studied metals. The mobility and bioavailability of these metals and their geochemical forms widely varied according to pH, soil organic matter, biochar types, and application rates. As an environmentally friendly and economical material, biochar emphasizes its importance as a tool that makes the soil more suitable for safe cultivation in the short term and its long-term sustainability. This study proves that it reduces the mobility of HMs, their environmental risks and contributes to food safety. It also confirms that performing more controlled experiments, such as a pot, is a disciplined and effective way to assess the suitability of different types of biochar as soil modifications to restore HMs contaminated soil via controlling the mobilization of these minerals.

scholarly journals Contamination of bottom sediments by lead, zinc and cadmium in Rzeszow reservoir

2018 ◽  
Vol 29 (4) ◽  
pp. 10-15
Author(s):  
Katarzyna Maj-Zajezierska ◽  
Piotr Koszelnik
Keyword(s):  
Heavy Metals ◽  
Bottom Sediments ◽  
Sediment Quality ◽  
Environmental Risks ◽  
Sediment Classification ◽  
Quality Classification ◽  
Lead Zinc ◽  
Aquatic Sediment ◽  
Positive Effect

Abstract The aim of the present study was to determine the level of contamination of the bottom sediments in the Rzeszow reservoir by the selected heavy metals Pb, Cd and Zn, and to identify the potential environmental risks of heavy metals content basing on available assessments and classification of bottom sediments. The Rzeszow reservoir is situated on the Wisłok River in the Podkarpackie Voivodeship, southeaster Poland, was constructed on 1974. Nowadays, as a result of silting, the reservoir reduced its surface and depth, which does not have a positive effect on the assumed functions it is to perform. The study was conducted in 2016. The samples of sediment were collected in five locations. Samples were taken twice: in June and in October. The following concentrations have been determined: cadmium - 0.01 ÷ 0.92 mg•kg–1, zinc - 54.39 ÷ 128 mg•kg–1, lead - 2.98 ÷ 25.42 mg•kg–1. The decline trend in the sediment is following: Zn > Pb > Cd. For the assessment of sediment contamination, following methods: aquatic sediment quality classification used by the Polish Geological Institute - I class, Regulation of the Minister of Environment of April 16 2002 on the types and concentrations of substances contaminating the excavated material – unpolluted and LAW sediment classification – Pb - I/I-II, Cd - I/I-II/II and Zn - I/I-II. The obtained results were compared with the results obtained by the other authors in earlier years, which led to the estimated changes in the concentration of the tested metals.

scholarly journals SOIL QUALITY EVALUATION IN RANGELAND SOILS IN RELATION TO HEAVY METALS POLLUTION

2006 ◽  
Vol 28 (63) ◽  
Author(s):  
E. U. Onweremadu ◽  
I. C. Okoli ◽  
O. O. Emenalom ◽  
M. N. Opara ◽  
E. T. Eshett
Keyword(s):  
Heavy Metals ◽  
Organic Matter ◽  
Soil Quality ◽  
Quality Evaluation ◽  
Anthropogenic Activities ◽  
Soil Survey ◽  
Survey Technique ◽  
Morphological Index ◽  
Heavy Metals Pollution ◽  
Positive Correlations

Heightened anthropogenic activities at the study site necessitated this investigation on soil quality. A transect soil survey technique was used to link sampled points from an open dumpsite towards the river valley. Three minipedons were dug and sampled per location and collected samples were used for various laboratory analyses. Results showed that soils of the dumpsite (OB1) had the highest soil quality morphological index (SQMI) value of 3.82, indicating best quality while the least SQMI was found in the ranch (SQMI = 1.27). The SQMI had significant correlations with OM (organic matter) (r=0.82; p=0.001; n=72), clay (r=65; p=0.01; n=72), pH(r=0.58; p=0.01; n=72) and bulk density (r=0.71; p=0.05; p=0.05; n=72). Although there were positive correlations between SQMI and copper and cadmium, heavy metals were poor predictors of SQMI, indicating that soil quality evaluation by SQMI assesses mainly soil physical fertility.

scholarly journals The Potential of Heavy Metals Contamination in the Surface Sediments of River Nile, Egypt

2018 ◽  
Vol 3 (2) ◽  
pp. 143-159 ◽  
Author(s):  
Mohamed Nageeb Rashed ◽  
Mohamed ELSadeek Fouad Toufeek ◽  
Mahmoud Abedeldaium Eltaher ◽  
Ayman Outhman Elbadry
Keyword(s):  
Heavy Metals ◽  
Electrical Conductivity ◽  
Organic Matter ◽  
Anthropogenic Activities ◽  
Correlation Coefficients ◽  
Contamination Factor ◽  
Pollution Load Index ◽  
Pollution Indices ◽  
River Nile ◽  
Pollution Load

Electrical conductivity, pH, organic matter, carbonates and five heavy metals (Fe, Mn, Zn, Cu and Pb) were measured seasonally in the sediments of River Nile (Egypt) during 2015. Ten sectors include 30 sites were selected along River Nile from Aswan to Armant to assess the levels of the studied parameters. Heavy metals in sediments were in the order of Pb < Cu < Zn < Mn < Fe, which indicated that Pb was found to be the least concentration in sediments, whereas Fe was the most accumulated element. Pearson’s correlation coefficients among the measured parameters were tested. Zn, Cu and Pb were positively correlated with electrical conductivity and organic matter accumulation and also they were positively correlated with each other. Sediments pollution load was studied through pollution indices [geo-accumulation index, pollution load index, modified degree of contamination, contamination factor and enrichment factor]. The pollution indices confirmed that the River Nile sediments in the studied area were not contaminated with these heavy metals except for some samples collected from certain sites as a result of the anthropogenic activities at these sites.

scholarly journals Heavy metals concentration in soils from parks and green areas in Belgrade

2009 ◽  
Vol 74 (6) ◽  
pp. 697-706 ◽  
Author(s):  
Mirjana Marjanovic ◽  
Marija Vukcevic ◽  
Dusan Antonovic ◽  
Suzana Dimitrijevic ◽  
Djordje Jovanovic ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Organic Matter ◽  
Urban Soils ◽  
Anthropogenic Activities ◽  
The Past ◽  
Ph Values ◽  
Green Areas ◽  
The City ◽  
Very High ◽  
Pb Concentration

The current study included the investigation of several metals and their distribution in urban soils from parks and green areas in the city of Belgrade. The soils were sampled in January and February 2008. The concentrations of Cd, Co, Cu, Pb, Mn and Zn were measured, as well as the pH values and organic matter contents. The obtained results showed that there was a significant level of contamination in some samples, especially with lead, and that it was most probably caused by anthropogenic activities, mostly from traffic. The results were compared with the National legislation and Netherlands standards. Also, the recent results were compared with the data from previous work and it was concluded that there has been a certain increase of the Pb concentration in the past three years. The level of pollution in playground soil was very high and each analyzed sample exceeded the Dutch target value for Cd, Co and Pb.

scholarly journals The Micro/elemental Composition of Bottom Sediments of Small Lakes as Indicator of Environmental Risks in Urban Area of Republic of Karelia

2018 ◽  
Author(s):  
Keyword(s):  
Heavy Metals ◽  
Lake Sediments ◽  
Urban Environment ◽  
Bottom Sediments ◽  
Environmental Risks ◽  
Water Bodies ◽  
Individual Species ◽  
Urban Water ◽  
Small Lakes ◽  
Living Organisms

The general questions of the influence of urban environment on the development of deviations in living organisms up to the death of individual species are considered. Using the example of a study of the chemical composition of bottom sediments of six small lakes of the Republic of Karelia, a significant effect of technogenesis on the occurrence of ecological risks on the aquatic flora and fauna of an urbanized environment is shown. We have stated that the upper layers of the bottom sediments of urban lakes have increased concentrations of heavy metals in comparison with the underlying layers. The thickness of technogenically altered lake sediments for urban water bodies of Karelia is established. According to the analysis of the formulas of geochemical associations of bottom sediments of urbanized lakes, we identified priority pollutants (Pb, Sb, Cd, V, Zn, Cu, Ni etc.). These metals are associated with major environmental risks within the urban environment of the region. The patterns of distribution of individual chemical elements in the investigated lake sediments are determined depending on the geochemical specificity of the catchment area and specific sources of heavy metals. Examples of direct negative effects of heavy metals on living organisms of the aquatic environment are benthic organisms and fish. The biogeochemical potential of biota of urban water bodies to accumulate heavy metals and accompanying microelements is shown.

scholarly journals Speciation of Heavy Metals in Bottom Sediments of Karra River, Nepal

2013 ◽  
Vol 28 (1-2) ◽  
pp. 267-272
Author(s):  
Sadhana Pradhanang
Keyword(s):  
Heavy Metals ◽  
Sequential Extraction ◽  
Bottom Sediments ◽  
Anthropogenic Activities ◽  
Significant Proportion ◽  
Chemical Processes ◽  
Residual Fraction ◽  
Chemical Forms ◽  
Bed Sediments ◽  
Physical Chemical

The chemical forms of copper and zinc have been determined using the fractional scheme of Tessier et al. (1979) in the bed sediments of Karra River, Hetauda, Nepal. The sequential extraction revealed that high percentage of metals was associated in the residual fraction (upstream and downstream). However, in most of the sites in the industrial belt, a significant proportion of metal was associated with the non-residual fraction (64% in Cu and 45% in Zn) which can be remobilized and released to the environment by various physical-chemical processes. This indicates influence of anthropogenic activities on the Karra River

HEAVY METAL SPECIATION IN BOTTOM SEDIMENTS OF THE VYSHNEVOLOTSKY RESERVOIR

2018 ◽  
pp. 46-54
Author(s):  
O. A. Lipatnikova
Keyword(s):  
Heavy Metal ◽  
Organic Matter ◽  
Bottom Sediments ◽  
Metal Speciation ◽  
Organic Matter Content ◽  
Water Reservoir ◽  
Matter Content ◽  
Heavy Metal Speciation ◽  
Mobile Forms ◽  
Manganese Hydroxides

The study of heavy metal speciation in bottom sediments of the Vyshnevolotsky water reservoir is presented in this paper. Sequential selective procedure was used to determine the heavy metal speciation in bottom sediments and thermodynamic calculation — to determine ones in interstitial water. It has been shown that Mn are mainly presented in exchangeable and carbonate forms; for Fe, Zn, Pb и Co the forms are related to iron and manganese hydroxides is played an important role; and Cu and Ni are mainly associated with organic matter. In interstitial waters the main forms of heavy metal speciation are free ions for Zn, Ni, Co and Cd, carbonate complexes for Pb, fulvate complexes for Cu. Effects of particle size and organic matter content in sediments on distribution of mobile and potentially mobile forms of toxic elements have been revealed.

Content of the Heavy Metals in Water and Bottom Sediments of the Ingulets River

2008 ◽  
Vol 44 (5) ◽  
pp. 105-110 ◽  
Author(s):  
I. M. Malakhov ◽  
A. O. Bobko ◽  
T. M. Aliokhina
Keyword(s):  
Heavy Metals ◽  
Bottom Sediments
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