scholarly journals Heavy Metals in Organs and Tissues of Silver X Bigheads Carp Hybrid as Indices of Anthropogenic Pressure in Areas with a High Level of Urbanization

2021 ◽  
Vol 83 ◽  
pp. 55-68
Author(s):  
Alina A. Makarenko ◽  
Petr G. Shevchenko ◽  
Iryna S. Kononenko ◽  
Vadym M. Kondratyk ◽  
Dmytro S. Khrystenko ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Natural Waters ◽  
Environmental Pollutants ◽  
Aquatic Organisms ◽  
Bighead Carp ◽  
Anthropogenic Pressure ◽  
Functional Features ◽  
The One ◽  
Cadmium And Lead ◽  
High Level

The growth of man-caused load on natural objects, including surface waters, gave impetus to the studying for issue of water pollution in Ukraine by various pollutants. Especially relevant for us are the studies of fishery reservoirs as a direct environment for growing quality aquaculture products. Among the toxic compounds contained in reservoirs, one of the first places is occupied by heavy metals. On the one hand, heavy metals, as pollutants in natural waters, pose a great danger because even in relatively small concentrations they can adversely affect aquatic organisms. On the other hand, in microquantities most heavy metals (except mercury, cadmium and lead) are a natural and even essential component of living cells of aquatic organisms, including fish [17,19].Zn, Mn, Fe, Cu, Pb, Co, Ni, Cd in the organs and tissues of the bighead carphybrid form, which was cultivated in ponds from highly urbanized territory, are distributed heterogeneously and their level of content depends not only on the physical and chemical characteristics of the aquatic environment or this heavy metals biochemical activities force in fish organisms, but also on functional features of concrete organs and tissues of the latter. Results of our investigations showed that above mentioned heavy metals were characterised by high levels of content in the organs and tissues of hybrid silver x bigheadcarp. Highest content in organism of hybrid are lead, cobalt, and cadmium. Highest concentration of heavy metals in our investigations was recorded in gills, because it is the first defence line of fish organism from environmental pollutants.

Ecotoxicological effects of anthropogenic pressure in semi-enclosed artificial lagoon ecosystems in the Gulf of Aqaba

2020 ◽  
Author(s):  
Mohammad Ahmad Wahsha ◽  
Tariq Al-Najjar
Keyword(s):  
Heavy Metals ◽  
Heavy Metal Contamination ◽  
Aquatic Organisms ◽  
Biodiversity Loss ◽  
Health Condition ◽  
Gulf Of Aqaba ◽  
Anthropogenic Pressure ◽  
Toxic Heavy Metals ◽  
Ecotoxicological Effects ◽  
Wide Range

<p>Heavy metals are considered to be among the most potent environmental contaminants, and their release into the environment is increasing rapidly since the last decades from various sources and activities and may enter into the environment by a wide range of pathways and processes. They can be translocated, disperse in the environment, and bio-concentrate in aquatic organisms, causing increase ecosystem degradation and leading to biodiversity loss. Furthermore, they may enter the food chain, creating health risks for both humans and animals. This study aimed to evaluate the ecotoxicological effects of anthropogenic pressure in semi-enclosed artificial lagoon ecosystems in the Gulf of Aqaba, Red Sea. Our findings with regard to heavy metal contamination showed that the area is contaminated by significant amounts of several potentially toxic heavy metals (such as Cd, Cr, Cu, and Fe). The anthropic intervention in the area impacted heavily the natural environment. We found that the biological test (lipid peroxidation) was a useful assay for assessing the overall health condition and response (stress level) towards natural and anthropogenic forces in the studied areas. The selected marine organisms (<em>Holothuria atra</em>, <em>Tripneustes gratilla</em>, <em>Ulva lactuca </em>and <em>Halophila stipulacea</em>) have the ability to accumulate several levels of heavy metals in their tissue with different trends of bioaccumulation. Therefore, they can be used as promising bioindicators for such research. The results obtained permit to assess the environmental effects of anthropogenic pressure and can be a useful basis for planning possible remediation projects.</p>

scholarly journals Seasonal dynamics of cadmium and plumbum in the Turia and Pripyat rivers

2020 ◽  
pp. 540-546
Author(s):  
Halyna Humeniuk ◽  
Olena Voloshyn ◽  
Volodymyr Voloshyn
Keyword(s):  
Heavy Metals ◽  
Surface Waters ◽  
Seasonal Dynamics ◽  
Aquatic Ecosystems ◽  
Quantitative Composition ◽  
Anthropogenic Pressure ◽  
Qualitative Composition ◽  
Significant Excess ◽  
Qualitative And Quantitative ◽  
High Level

The anthropogenic pressure on aquatic ecosystems leads to a significant transformation of their quantitative and qualitative composition. Many rivers of Ukraine are polluted. The object of research was the surface waters of the rivers Pripyat and Turiya (Volyn region, Ukraine). Analysis of the qualitative and quantitative composition of toxicants (Cd, Pb) showed that the waters of the rivers have high level of pollution. A negative phenomenon in the studied reservoirs is a significant excess of concentrations of heavy metals: lead in 118 times and cadmium in 110 times in August.

scholarly journals Differentiation of Trace Metal Contamination Level between Different Urban Functional Zones in Permafrost Affected Soils (the Example of Several Cities in the Yamal Region, Russian Arctic)

Minerals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 668
Author(s):  
Timur Nizamutdinov ◽  
Eugenia Morgun ◽  
Alexandr Pechkin ◽  
Jakub Kostecki ◽  
Andrzej Greinert ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Urban Areas ◽  
The Arctic ◽  
Contamination Level ◽  
Anthropogenic Pressure ◽  
Pi Index ◽  
Functional Zones ◽  
Accumulation Of Metals ◽  
High Level ◽  
Sandy Sediments

Dynamically developing urbanization causes a number of environmental effects, including those related to the chemical transformation of soils. Relatively less information about the urban areas of the Arctic and Subarctic zones, constructed mostly on permafrost and intensively populated areas can be found. By the example of the analysis of basic soil properties and concentrations of trace metals in the soils of the cities of Salekhard, Urengoy, Nadym, Novy Urengoy and Gaz Sale (the Yamalo-Nenets Autonomous District), as well as various functional zones within the cities, the relationship between the age of the cities, the level of anthropogenic pressure and the type of parent materials and the character of accumulation of metals in the soil profile of urban soils have been described. The direct correlation was found between the content of Pb, Cr, Ni, As and soil sorption characteristics. In young cities built on sandy sediments, there is less accumulation of heavy metals in the topsoil horizons. Relatively higher concentrations of Cu and Cd were noted in soils of industrialized cities, regardless of functional zones. The higher content of Cr, Ni, Cu, Zn, As and Pb has been registered in older zones also frequently used for residential purposes. The calculated values of the PI index for some functional zones of young cities show the medium and high content of heavy metals. The analysis of Igeo and PLI indices shows a large diversity both in relation to individual cities and their functional zones. Soil quality, in spite of the high level of anthropogenic load, was assessed as mostly satisfactory.

scholarly journals Introduction of Syringa species in Akmola region

2021 ◽  
Vol 103 (3) ◽  
pp. 7-17
Author(s):  
Gulnar Aidarkhanova ◽  
◽  
Bardat Imasheva ◽  
Keyword(s):  
Heavy Metals ◽  
Urban Areas ◽  
Seedling Survival ◽  
Toxic Heavy Metals ◽  
Republic Of China ◽  
Introduced Plants ◽  
History Of ◽  
The Republic ◽  
Cadmium And Lead ◽  
High Level

The article discusses the issues of monitoring of the lilacs species (Syringa) that could be introduced in the green spaces of the Akmola region and the cities of Central Kazakhstan. This study presents the data on the biodiversity of perspective tree species and shrubs that could be used for landscaping of urban areas; a brief history of their introduction is published. In the course of the study, the authors proposed a methodology for monitoring lilac species selected for introduction from the Republic of China that were planted in 2015 (Amur lilac (Syrínga amurénsis), oblata lilac (S. oblata), fluffy lilac (S. pubescens), Beijing lilac (S. pekinensis)). Their seedling survival were 50.0 %; 86.4 %; 23.3 %; 71.7 %. Among these species, S. oblata (86.4 %) and S. pekinensis (71.7 %) were the most adapted on the territory of the Akmola region by the summer of 2019. The activity of photosynthesis was determined as an assessment for the intensity of physiological and biochemical parameters in introduced plants. Significantly lower photosynthetic activity was detected in S. oblata (0.75 μg / g); however, it was increased in all three species of lilacs (0.78 μg / g). Measuring heavy metal content in studied species, we detected up to 2.5 times higher concentration of cadmium and lead in the leaves of S. amurénsis comparing to others. Amur lilac accumulates a very high level of iron (3833.69 μg / g), which is 13 times higher than the maximum permitted concentration (MPC). The concentration of copper in the leaves of S. oblata is 1.1 times higher than the MPC. The amount of zinc is approximately the same in all studied plant samples and the values do not exceed the MPC. It was observed that Cu and Fe accumulate in lilac leaves more than permitted according to MPC. S. amurénsis has high accumulating properties, as it has been shown that it intensively absorbs the most toxic heavy metals. According to research findings, it has been shown that heavy metals accumulate in different concentrations in each species of lilac. The accumulation of heavy metals in lilac plants occurs selectively, depending on the species.

scholarly journals Hysteresis of heavy metals uptake induced in Taraxacum officinale by thiuram

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Dorota Adamczyk-Szabela ◽  
Katarzyna Lisowska ◽  
Wojciech M. Wolf
Keyword(s):  
Heavy Metals ◽  
Taraxacum Officinale ◽  
Lead Uptake ◽  
Chemically Induced ◽  
Zinc Cadmium ◽  
Long Time ◽  
Copper Zinc ◽  
The One ◽  
Cadmium And Lead ◽  
Heavy Metals Uptake

AbstractDandelion (Taraxacum officinale) yields active substances frequently used in herbal medicinal preparations. Its plantations are exposed to fungal plagues which pose a threat to herbal crops. The aim of this study was to evaluate the long time effects of a fungicide thiuram on dandelion growth and photosynthesis. Additionally, the manganese, iron, copper, zinc, cadmium, and lead uptake and transport were also investigated. Plants were cultivated under greenhouse conditions by the pot method in a universal flowering soil. The elements content in soil and plants were determined by the HR-CS FAAS spectrometer. Thiuram concentrations were established by the HPLC. Those analyses showed that almost 80% of thiuram decomposed within two weeks of its application. The photosynthesis indicators suggested, that plants were in good conditions and the fungicide supplementation facilitated plant growth. The latter could be prompted by thiuram acting as a sulfur rich chemical micro fertilizer. The hypothesis, that thiuram significantly affects heavy metals interactions in dandelion was proved by the one-way analysis of variance. Notable, metals uptake did not completely recover after fungicide decomposition for all investigated elements except iron We suggest to define this chemically induced, time-dependent heavy metals migrations in the soil–plant system as hysteresis of heavy metals uptake.

scholarly journals Preliminary Investigation of Microplastic as a Vector for Heavy Metals in Bye-ma Salt Mine, Wukari, Nigeria

2021 ◽  
Author(s):  
HIKON B. N. ◽  
GARY G YEBPELLA ◽  
LAMI JAFIYA ◽  
S. Ayuba
Keyword(s):  
Heavy Metals ◽  
Preliminary Investigation ◽  
Aquatic Organisms ◽  
Polymeric Materials ◽  
Ethylene Vinyl Acetate ◽  
Salt Mine ◽  
Absorption Bands ◽  
Heavy Metals Pollution ◽  
High Level ◽  
Poly Propylene

This study is aimed at the preliminary investigation of microplastics as carrier of heavy metals pollution in surface sediment. Heavy metals concentration was determined by FAAS while microplastics characterization was analysed by ATR-FTIR spectrophotometer. The results obtained showed high level of lead (Pb) concentrations which ranged from 21.37 - 32.80 mg/kg across the sampling sites while Cd has the least concentration between 0.04 - 0.80 mg/kg. The concentration of Pb and Cd were above the USEPA permissible limit in sediment. The following absorption bands; 2978.19, 1728.28 and 1458.23 cm-1 with the functional groups; C-H stretch, C=O stretch and CH2 bend indicates the presence of Ethylene vinyl acetate (EVA) in site S2 and S4 respectively. Other microplastics found in the sampling sites are Nylon, Nitrile, Polycarbonate and Poly propylene. This indicates that there is identical distribution of the microplastics in the sampling sites. The quantities of microplastics isolated ranged from 8.11 - 8.16 g across the sites. Aquatic organisms fed on these polymeric materials because of their unique appearance. Hence, heavy metals adsorption will lead to higher concentrations on microplastics which could be ingested and lead serious complication in their intestine.

scholarly journals Pollution Status of Pakistan: A Retrospective Review on Heavy Metal Contamination of Water, Soil, and Vegetables

2014 ◽  
Vol 2014 ◽  
pp. 1-29 ◽  
Author(s):  
Amir Waseem ◽  
Jahanzaib Arshad ◽  
Farhat Iqbal ◽  
Ashif Sajjad ◽  
Zahid Mehmood ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Human Health ◽  
Food Chain ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Environmental Pollutants ◽  
Anthropogenic Pressure ◽  
Trace Heavy Metals ◽  
Iron And Zinc

Trace heavy metals, such as arsenic, cadmium, lead, chromium, nickel, and mercury, are important environmental pollutants, particularly in areas with high anthropogenic pressure. In addition to these metals, copper, manganese, iron, and zinc are also important trace micronutrients. The presence of trace heavy metals in the atmosphere, soil, and water can cause serious problems to all organisms, and the ubiquitous bioavailability of these heavy metal can result in bioaccumulation in the food chain which especially can be highly dangerous to human health. This study reviews the heavy metal contamination in several areas of Pakistan over the past few years, particularly to assess the heavy metal contamination in water (ground water, surface water, and waste water), soil, sediments, particulate matter, and vegetables. The listed contaminations affect the drinking water quality, ecological environment, and food chain. Moreover, the toxicity induced by contaminated water, soil, and vegetables poses serious threat to human health.

DISTRIBUTION OF DISSOLVED METHANE IN SURFACE COASTAL WATERS OF THE NORTHEASTERN PART OF THE BLACK SEA

2017 ◽  
Author(s):  
Elena Kovaleva ◽  
Elena Kovaleva ◽  
Alexander Izhitskiy ◽  
Alexander Izhitskiy ◽  
Alexander Egorov ◽  
...  
Keyword(s):  
Black Sea ◽  
Natural Waters ◽  
Sea Water ◽  
The Black Sea ◽  
Methane Formation ◽  
Anthropogenic Pressure ◽  
Russian Science ◽  
Southeastern Part ◽  
Dissolved Methane ◽  
Continental Runoff

Studying of methane formation and distribution in natural waters is important for understanding of biogeochemical processes of carbon cycle, searching for oil and gas sections and evaluation of CH4 emissions for investigations of greenhouse effect. The Black Sea is the largest methane water body on our planet. However, relatively low values of methane concentration (closed to equilibrium with the atmospheric air) are typical of the upper aerobic layer. At the same time, the distribution pattern of CH4 in surface waters of coastal areas is complicated by the influence of coastal biological productivity, continental runoff, bottom sources, hydrodynamic processes and anthropogenic effect. The investigation is focused on the spatial variability of dissolved methane in the surface layer of the sea in coastal regions affected by the continental runoff and anthropogenic pressure. Unique in situ data on methane concentrations were collected along the ship track on 2 sections between Sochi and Gelendzhik (2013, 2014) and 2 sections between Gelendzhik and Feodosia (2015). Overall 170 samples were obtained. Gas-chromatographic analysis of the samples revealed increase of CH4 saturation in the southeastern part of the Crimean shelf and the Kerch Strait area. Such a pattern was apparently caused by the influence of the Azov Sea water spread westward along the Crimean shore from the strait. This work was supported by the Russian Science Foundation, Project 14-50-00095 and the Russian Foundation for Basic Research, Project 16-35-00156 mol_a.

DISTRIBUTION OF DISSOLVED METHANE IN SURFACE COASTAL WATERS OF THE NORTHEASTERN PART OF THE BLACK SEA

2017 ◽  
Author(s):  
Elena Kovaleva ◽  
Elena Kovaleva ◽  
Alexander Izhitskiy ◽  
Alexander Izhitskiy ◽  
Alexander Egorov ◽  
...  
Keyword(s):  
Black Sea ◽  
Natural Waters ◽  
Sea Water ◽  
The Black Sea ◽  
Methane Formation ◽  
Anthropogenic Pressure ◽  
Russian Science ◽  
Southeastern Part ◽  
Dissolved Methane ◽  
Continental Runoff

Studying of methane formation and distribution in natural waters is important for understanding of biogeochemical processes of carbon cycle, searching for oil and gas sections and evaluation of CH4 emissions for investigations of greenhouse effect. The Black Sea is the largest methane water body on our planet. However, relatively low values of methane concentration (closed to equilibrium with the atmospheric air) are typical of the upper aerobic layer. At the same time, the distribution pattern of CH4 in surface waters of coastal areas is complicated by the influence of coastal biological productivity, continental runoff, bottom sources, hydrodynamic processes and anthropogenic effect. The investigation is focused on the spatial variability of dissolved methane in the surface layer of the sea in coastal regions affected by the continental runoff and anthropogenic pressure. Unique in situ data on methane concentrations were collected along the ship track on 2 sections between Sochi and Gelendzhik (2013, 2014) and 2 sections between Gelendzhik and Feodosia (2015). Overall 170 samples were obtained. Gas-chromatographic analysis of the samples revealed increase of CH4 saturation in the southeastern part of the Crimean shelf and the Kerch Strait area. Such a pattern was apparently caused by the influence of the Azov Sea water spread westward along the Crimean shore from the strait. This work was supported by the Russian Science Foundation, Project 14-50-00095 and the Russian Foundation for Basic Research, Project 16-35-00156 mol_a.

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