SPATIAL-TIME VARIABILITY OF THE LEVEL OF HEAVY METAL COMPOUNDS IN THE WATER OF THE MALKA AND BAKSAN RIVERS

2021 ◽  
pp. 119-132
Author(s):  
Fatimat Adraevna Atabieva ◽  
Elena Alexandrovna Cherednik ◽  
Asiyat Salikhovna Otarova
Keyword(s):  
Heavy Metal ◽  
Time Variability ◽  
Metal Compounds

Polymers contamination by heavy metal compounds

2002 ◽  
Vol 56 (11) ◽  
pp. 483-488
Author(s):  
Sasa Jovanic ◽  
Dragoslav Stoiljkovic ◽  
Ivanka Popovic
Keyword(s):  
Heavy Metal ◽  
Aqueous Medium ◽  
Metal Compound ◽  
Medium Temperature ◽  
Metal Compounds ◽  
Metal Type ◽  
Copper Manganese ◽  
Increasing Temperature

The contamination of important synthetic (surface unmodified) polymers by various heavy metal compounds (such as copper, manganese and lead) in aqueous medium was investigated in this study. The influence of the pH of the aqueous medium, temperature and metal type on contamination was investigated during a 10 day period. It was found that increasing pH contributed to higher polymer contamination (at higher pH 100 times for copper and up to 400 times for lead), as well as contact with easily penetrable substances. Increasing temperature decreased contamination by the metal compound for PELD and PET which was not the case for PEHD and PR.

scholarly journals Protective Role of Agrimonia eupatoria L. in Heavy Metal Induced Nephrotoxicity

2018 ◽  
Vol 62 (2) ◽  
pp. 13-18
Author(s):  
D. Marcinčáková ◽  
M. Falis ◽  
P. Schusterová ◽  
P. Váczi ◽  
S. Marcinčák ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Potassium Dichromate ◽  
Ethanolic Extract ◽  
Protective Role ◽  
Rabbit Kidney ◽  
Cell Adherence ◽  
Metal Compounds ◽  
Sulfate Heptahydrate ◽  
Chloride Dihydrate

Abstract The aim of this study was to evaluate the potential protective role of Agrimonia eupatoria L. in heavy metal induced nephrotoxicity. Rabbit kidney epithelial cells (RK13) were used as the model cell line. They were exposed to three different heavy metal compounds: cadmium chloride dihydrate CdCl2.2H2O (15 and 20 mg.l−1), potassium dichromate K2Cr2O7 (1, 10 mg.l−1), and zinc sulfate heptahydrate ZnSO4.7H2O (50, 150 mg.l−1) simultaneously with agrimony (ethanolic extract, 100 mg.l−1). The cell response was recorded using the xCELLigence system or real-time cell analysis (RTCA) as a cell index (CI) and expressed as cell adherence (%) compared to control cells without treatment. The potential nephroprotective effects were recorded in cells treated with chromium (1 a 10 mg.l−1) and agrimony, where the cell adherence increased from 95.11 ± 11.25 % and 7.24 ± 0.33 % to 103.26 ± 1.23 % and 68.54 ± 4.89 % (P < 0.05) respectfully and also with a combination of agrimony and zinc (150 mg.l−1), where the adherence increased from 57.45 ± 1.98 % to 95.4 ± 6.95 %. During the cell exposure to cadmium in combination with agrimony, the protective effect was not recorded; the adherence of cells was even decreased (P < 0.05).

scholarly journals Heavy metal compounds in a soil of technogenic zone as indicate of its ecological state

2014 ◽  
Vol 3 (2) ◽  
pp. 144 ◽  
Author(s):  
Tatiana Minkina ◽  
Saglara Mandzhieva ◽  
Galina Motusova ◽  
Marina Burachevskaya ◽  
Olga Nazarenko ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Ecological State ◽  
Metal Compounds

Impact of heavy metal compounds on oxygen consumption of freshwater mussel Lamellidens consobrinus (Lea)

2012 ◽  
Vol 2 (1) ◽  
pp. 01-04
Author(s):  
P. R. Bhamre ◽  
A. E. Desai
Keyword(s):  
Heavy Metal ◽  
Oxygen Consumption ◽  
Metabolic Rate ◽  
Experimental Work ◽  
Cadmium Chloride ◽  
Zinc Sulphate ◽  
Freshwater Mussel ◽  
Metal Compounds ◽  
Toxic Concentrations ◽  
Enzymatic Pathways

The purpose of this study was to assess the toxic effects of heavy metal compounds like Cadmium chloride (CdCl2) and Zinc sulphate (ZnSo4) on respiratory metabolism of the freshwater mussel Lamellidens consobrinus.The effect was observed for 24, 48, 72 and 96 h exposure. On exposure of mussels to toxic concentrations the respiratory metabolic rate was found profoundly decreased after two hours of intoxication in Cadmium chloride (0.0863 ± 0.0032 mg/gm/l/h) and Zinc sulphate (0.1517 ± .0018 mg/gm/l/h). The oxygen consumption was continuously decreased up to 96 h in CdCl2 (0.0303 ± 0.0019 mg/gm/l/h) and ZnSo4 (0.0746. ± 0.0019 mg/gm/l/h).The decrease in metabolic rate was more prominent in cadmium chloride than zinc sulphate. This impact may be due to inhibition of enzymatic pathways and osmoregulatory response which depends on the time of exposure to heavy metal compounds used for experimental work.

scholarly journals Rhizobacteria effect on bioaccumulation and biotransformation of arsenic and heavy metal compounds in the technogenous soils

2019 ◽  
Vol 381 ◽  
pp. 012007 ◽  
Author(s):  
G A Belogolova ◽  
B A Baenguev ◽  
O N Gordeeva ◽  
M G Sokolova ◽  
M V Pastukhov ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Compounds

scholarly journals Biotoxicity of heavy metal salts to Bacillus subtilis and their sorption properties

2020 ◽  
Vol 157 ◽  
pp. 02012
Author(s):  
Aleksey Sizentcov ◽  
Elena Sal’nikova ◽  
Elena Barysheva ◽  
Yaroslav Sizentcov ◽  
Veronika Sal’nikova
Keyword(s):  
Heavy Metal ◽  
Bacillus Subtilis ◽  
Strain Differences ◽  
Scientific Development ◽  
Biological Origin ◽  
Metal Compounds ◽  
Zinc Cadmium ◽  
Probiotic Strains ◽  
Cadmium And Lead ◽  
High Level

The prospect of the use of microorganisms in medical and veterinary practice at the present stage of scientific development has high potential based on natural mechanisms of protection and adaptation of organisms to the effects of adverse factors. The biological adaptation potential of microorganisms to the effects of heavy metals found its practical application in studies of soil and water bioremediation. Based on the above, we set the aim to assess inhibitory characteristics of various heavy metal compounds, the extent of their impact on the growth of populations of probiotic strains Bacillus subtilis, and to study biosorption criteria of the strains. To achieve this aim, we used isolated cultures of probiotic strains B. subtilis 534 and B. subtilis 10641 extracted from drugs Sporobacterin and Vetom 1.1, respectively. Various chemical compounds of iron, copper, zinc, cadmium, and lead with a various anion component were used as growth inhibitors in the study. The criterion for the selection of compounds was a high level of their dissociation in water solutions. Data presented in this work experimentally confirm the capability of using probiotic strains in ecosystems of biological origin. A comparison of two strains of Bacillus subtilis showed a high level of resistance to xenobiotic elements with strain differences in the studied microorganism. The B. subtilis 534 strain revealed a higher level of resistance to compounds with a direct correlation between the inhibitory characteristics of the elements and the level of element sorption from the nutrient substrate.

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