scholarly journals Special Features of Heavy Metals Accumulation in Soft Tissues of Mediterranean Mussel and Giant Oyster Cultivated in the South-East Crimea Coastal Zone

2017 ◽  
Author(s):  
Keyword(s):  
Heavy Metals ◽  
Coastal Zone ◽  
Soft Tissues ◽  
Ion Concentration ◽  
Pollution Level ◽  
The South ◽  
Lead And Cadmium ◽  
Mediterranean Mussel ◽  
Metals Accumulation ◽  
Giant Oyster

Researchers in the South-East Crimea coastal zone during the past decade indicate that the heavy metals’ ion concentration in the Black Sea waters is growing on as a result of industrial and agricultural operations. Increase of pollution in the off-shore zone bottom sediments is registered as well. In this situation monitoring of the coastal water area with mollusks permanently inhabiting this zone enables to determine the water pollution level. Accumulation of four heavy metals, such as Cd2+, Pb2+, Cu2+, Zn2+ in soft tissues of 18 months old mussels (Mytilus galloprovincialis Lamark,1819) and giant oysters (Crassostrea gigas Thunberg, 1793) introduced in the Karadag Reserve coastal zone. It has been shown that the giant oyster soft tissues accumulate high concentrations of copper and zinc. Only big quantity of zinc was found in the Mediterranean mussel tissues. These metals accumulation in oysters and mussels is stipulated by physiological needs of these bivalves. Low accumulation of the most hazardous pollutants as lead and cadmium states the possibility of mariculture development in studied area.

Heavy metals accumulation in freshwater mussels (Lamellidens marginalis) as a biological monitor inhabiting in Dhanmondi Lake, Dhaka, Bangladesh.

2016 ◽  
Vol 5 (10) ◽  
pp. 4933
Author(s):  
Sabia Sultana ◽  
A. K. M. Nur Alam Siddiki ◽  
Md. Rokonujjaman ◽  
M. Niamul Naser ◽  
Abdus Salam ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Soft Tissues ◽  
Freshwater Mussels ◽  
Heavy Metal Concentration ◽  
Heavy Metal Concentrations ◽  
Heavy Metals Accumulation ◽  
Manganese Zinc ◽  
Metals Accumulation ◽  
Test Level

The heavy metal concentration (e.g., Mn, Zn, Pb and Ni) were determined in soft tissues and shells of freshwater mussels (Lamellidens marginalis) at the various sites of Dhanmondi lake, Dhaka, Bangladesh between the period April, 2010 and March 2011. The heavy metal concentrations in shells and soft tissues of freshwater mussels were tended to vary significantly among sampling points and seasons in Dhanmondi Lake. Distribution of heavy metals in shell and soft tissue of Lamellidens marginalis followed the order Mn>Zn>Pb>Ni, respectively. According to the t-test, level of manganese, zinc and lead under investigation between shell and tissue showed statistically significant differences [Mn: t=-11.387; df=16; P=0.000; Zn: t=-2.590; df=16; P=0.020 and Pb: t=-2.8679; df=16; P=0.011].

scholarly journals Effect of the Degree of Soil Contamination with Heavy Metals on Their Mobility in the Soil Profile in a Microplot Experiment

Agronomy ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 878
Author(s):  
Dorota Pikuła ◽  
Wojciech Stępień
Keyword(s):  
Heavy Metals ◽  
Soil Contamination ◽  
Soil Profile ◽  
Contaminated Soils ◽  
Soil Depth ◽  
Organic Matter Content ◽  
Size Composition ◽  
Matter Content ◽  
Pollution Level ◽  
Lead And Cadmium

Adjusting Polish law to EU standards, many studies were started in the 1990s on the harmfulness of presumably contaminating elements (PCE) to the environment and the quality of plants intended produced for food purposes. For this reason, in 1987, a unique microplate experiment was established on natural soils artificially contaminated with copper, zinc, lead and cadmium oxides (up to the pollution level of class I, II and III). The soils were diversified in terms of pH (through liming), organic matter content (through the addition of brown coal) and the grain size composition of the humus level (Ap) (strong clay sand and light silt clay). After 14 years from the introduction of different rates of metals into the top layer (0–30 cm) of the two soils studied, relatively large movement of heavy metals in the soil profile occurred. The amount of leached metals depended mainly on the rate of a given element. The more contaminated was the soil was, the heavier the metals that leached to lower genetic levels of soil. Contaminated soils always had a higher concentration of individual metals in Et than in Bt level. The content of the tested metals in the Et layer was determined in HCl (1 mol·dm−3) and compared to the humus level. Only at the soil depth below 50 cm (Bt), the content of the studied metals’ forms was much lower than in the surface levels. The calculated mobility coefficients of the tested metals determined in 1 M HCl indicate a larger movement of the tested metals in lighter soils than in medium soils. The highest displacement coefficients were obtained for cadmium, while the lowest were for lead. An increase in mobility was obtained alongside an increase in soil contamination with the heavy metals studied. By analyzing the mobility coefficients (heavy metal increase in the Bt and Et layers), they can be ranked in the following decreasing sequence: on light soils: Cd > Cu > Zn > Pb and on medium soils: Cd > Zn > Pb > Cu.

scholarly journals Accumulation of heavy metals by family Lymnaeidae representatives as response to anthropogenic pollution critical levels of South Ural reservoirs

2019 ◽  
Vol 8 (3) ◽  
pp. 31-38
Author(s):  
Vladimir Vladislavovich Deryagin ◽  
Nazar Nikolayevich Nazarenko ◽  
Ekaterina Viktorovna Devyatova
Keyword(s):  
Heavy Metals ◽  
Soft Tissues ◽  
Anthropogenic Pollution ◽  
Copper Smelting ◽  
Surface Layers ◽  
Heavy Metals Accumulation ◽  
Water Shell ◽  
Metals Accumulation ◽  
Ph Level ◽  
Pond Snails

The features of heavy metals accumulation by Lymnaea fragilis and L . psilia were researched for the aerate emission polluted area of Karabash copper-smelting manufacturing (Southern Ural). These features are concluded with selective redistribution of heavy metals between soft tissues and the shell of Lymnaea . The heavy metals accumulation takes place by three independent tendencies: water soft tissues, water shell and soft tissues shell. The heavy metals content levels a thousand times exceed the physiological norm in soft tissues while in shell they exceed manifold. In the first place manganese and iron are accumulated while the cobalt, cadmium and molybdenum are finalizing the researched rank of accumulation. It has been ascertained that more biophil manganese are accumulated in mollusk soft tissues more than in other metals, while slightly less biophil iron is accumulated in shell, mainly in surface layers. For soft tissues and shell different ranks of heavy metals accumulation are observed, but these ranks are similar for different habitats, thus qualitative biogeochemical similarity is observed. The heavy metals accumulation in the system water soft tissues shell can help to estimate the extent of the metal environment pollution as well as local biophility of this metal. The adaptive response of pond snails to anthropogenic pollution is that there are more of them in less polluted reservoirs and less in more polluted reservoirs. It has been confirmed, that high heavy metals concentration and low pH level in reservoirs leads to death and absolute absence of these mollusk species.

Polymorphism of p-450 cytochrome detoxication genes in adolescents depending on the degree of contamination of the organism by heavy metals

2020 ◽  
Vol 99 (5) ◽  
pp. 478-482
Author(s):  
N. P. Setko ◽  
A. G. Setko ◽  
Ekaterina V. Bulycheva ◽  
A. V. Tyurin ◽  
E. Yu. Kalinina
Keyword(s):  
Heavy Metals ◽  
Environmental Factors ◽  
Heavy Metal Contamination ◽  
Atomic Absorption Spectrophotometry ◽  
The Body ◽  
Lead And Cadmium ◽  
Cyp2b6 Gene ◽  
Cytochrome P 450 ◽  
Gene Cyp1a1 ◽  
Group 1

Introduction. Changes in the body of children and adolescents aimed at adapting to environmental factors are determined by genetic polymorphism in xenobiotic biotransformation genes, determining the degree of susceptibility of the child’s body to pollutants, which is the basis of modern personalized preventive medicine when managing risks to the health of the child population under the influence of environmental factors. Material and methods. Trace elements, including heavy metals, lead and cadmium, were determined in the hair of 256 practically healthy teenagers by atomic absorption spectrophotometry. Depending on the level of content of the latter, two groups of adolescents were formed to determine six genes of the cytochrome P-450 family. Group 1 consisted of adolescents whose cadmium lead content exceeded the average Russian indices. The second group included adolescents whose heavy metals were above the level of average Russian standards. Results. Studies have shown that in adolescents of the 1st group, compared with the data of adolescents of the 2nd group, an increase in the number of carriers of two mutant alleles at the locus rs 1048943 (gene CYP1A1) is 3.08 times, rs 464621 (gene CYP1A1) is 1. 8 times; locus rs 2069522 (CYP1A2 gene) 3.63 times; locus rs 1799853 (CYP2C9 * 2 gene) 4.5 times; locus rs 1057910 (gene CYP2C9 * 3) 3.8 times and locus rs 2279343 (gene CYP2B6) 4.25 times. Moreover, carriers of two normal alleles in adolescents of the first group at the locus rs 1048943 (gene CYP1A1) were 5.14 times; locus rs 2279343 (CYP2B6 gene) was 6.5 fold less than among adolescents of the 2nd group; and at the locus rs 464621 (gene CYP1A1), rs 2069522 (gene CYP1A2), rs 1799853 (gene CYP2C9 * 2), rs 1057910 (gene CYP2C9 * 3) there were no carriers of normal homozygotes. Conclusion. Group 1 adolescents with heavy metal contamination of the body are carriers significantly in a greater number of pathological mutations in the genes of the cytochrome P-450 detoxification system in comparison with data from group 2 adolescents.

Determination of Some Heavy Metals in Milk of Cow Grazing At Selected Areas, of Kaduna Metropolis

2017 ◽  
Vol 7 (7) ◽  
pp. 341 ◽  
Author(s):  
Mahmud Mohammed Imam ◽  
Zahra Muhammad ◽  
Amina Zakari
Keyword(s):  
Heavy Metals ◽  
Cadmium Toxicity ◽  
Research Work ◽  
The Body ◽  
Cow Milk ◽  
Scientific Model ◽  
Potential Health ◽  
Milk Samples ◽  
Lead And Cadmium ◽  
Digestion Technique

In this research work the concentration of zinc, copper, lead, chromium, cadmium, and nickel in cow milk samples obtained from four different grazing areas   (kakuri, kudendan, malali, kawo) of Kaduna metropolis. The samples were digested by wet digestion technique .The trace element were determined using bulk scientific model VPG 210 model  Atomic Absorption Spectrophotometer (AAS).. The concentration of the determined heavy metal were The result revealed that Cr,  Ni and Cd were not detected in milk samples from Kawo, Malali  and Kudendan whereas lead (Pb) is detected in all samples and found to be above  the stipulated limits of recommended dietary allowance (NRC,1989) given as 0.02mg/day. Cu and Zn are essential elements needed by the body for proper metabolism and as such their deficiency or excess is very dangerous for human health. However, they were found in all samples and are within the recommended limits while Cd (2.13 – 3.15 mg/kg) in milk samples from Kakuri was found to be above such limit (0.5mg/day). Cow milk samples analyzed for heavy metals in this research work pose a threat of lead and cadmium toxicity due to their exposure to direct sources of air, water and plants in these grazing areas, thereby, resulting to a potential health risk to the consumers.

Assessment of Heavy Metals Accumulation in Shrubs And herbs along some Selected Roads in Mubi, Nigeria

2020 ◽  
Vol 04 (03) ◽  
Author(s):  
Tizhe Tari Dlama ◽  
Yusuf Sankem Comfort ◽  
Kwaya Vawanje Bitrus ◽  
James Ussa ◽  
Sunday Bukata Dorathy
Keyword(s):  
Heavy Metals ◽  
Heavy Metals Accumulation ◽  
Metals Accumulation

Biomonitoring of heavy metals accumulation in wild plants growing at Soon valley, Khushab, Pakistan

2020 ◽  
Vol 53 (1) ◽  
Author(s):  
Zafar Iqbal Khan ◽  
Ilker Ugulu ◽  
Asma Zafar ◽  
Naunain Mehmood ◽  
Humayun Bashir ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Wild Plants ◽  
Heavy Metals Accumulation ◽  
Metals Accumulation

Pollution retention capabilities of roadside soils

1999 ◽  
Vol 39 (2) ◽  
pp. 201-208 ◽  
Author(s):  
C. Dierkes ◽  
W. F. Geiger
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Drinking Water ◽  
Groundwater Recharge ◽  
Drinking Water Quality ◽  
Traffic Density ◽  
Roadside Soils ◽  
Highway Runoff ◽  
Lead And Cadmium ◽  
Lead Zinc

Runoff from highways contains significant loads of heavy metals and hydrocarbons. According to German regulations, it should be infiltrated over embankments to support groundwater-recharge. To investigate the decontaminating effect of greened embankments, soil-monoliths from highways with high traffic densities were taken. Soils were analyzed to characterize the contamination in relation to distance and depth for lead, zinc, copper, cadmium, PAH and MOTH. Lysimeters were charged in the field and laboratory with highway runoff to study the effluents under defined conditions. Concentrations of pollutants in roadside soils depend on the age of embankments and traffic density. Highest concentrations were found in the upper 5 cm of the soil and within a distance of up to two metres from the street. Concentrations of most pollutants decreased rapidly with depth and distance. Lead and cadmium could not be detected in lysimeter effluent. Zinc and copper were found in concentrations that did not exceed drinking water quality limits.

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