scholarly journals HEAVY METAL POLLUTION OF RIVER WATERS AND COASTAL SOILS ADJACENT TO THE TAILING STORAGE FACILITY TERRITORY

2020 ◽  
Vol 25 (3) ◽  
pp. 79-84
Author(s):  
A. R. Sukiasyan ◽  
◽  
A. A. Kirakosyan ◽  
Keyword(s):  
Heavy Metals ◽  
Storage Facility ◽  
Water Sampling ◽  
Accumulation Coefficient ◽  
River Waters ◽  
Zn Concentration ◽  
Sampling Points ◽  
Zn And Cu In ◽  
Coastal Soils ◽  
Plant Shutdown

Introduction. The operation of the Teghut copper-molybdenum enterprise resulted in the man-made load on the environments in terms of concentrations of some heavy metals (autumn 2016), the migration of which continued even after the plant shutdown (autumn 2018). Methods. The authors studied changes in the concentrations of Mo, Zn, and Cu in samples of Shnogh River water and coastal soils near the tailing storage facility territory. Results. During enterprise operation, in water sampling points 1 and 2, a decrease in the concentrations of these heavy metals after the plant shutdown was noted. According to the analysis of coastal soil samples, in points 1 and 2, after the plant shutdown, the Zn concentration decreased by 75% and the Cu concentration decreased by 84% compared with the analysis of samples during enterprise operation. In samples of coastal soils from sampling points 3 and 4, a concentration reverse was observed. Conclusion. The calculation of the geo-accumulation coefficient for the studied heavy metals in soil sampling points 1 and 2 compared to sampling points 3 and 4 indicates a decrease in the man-made load on the environment, caused by plant operation.

Influence of Bacau City�s Antropic Activities on the Heavy Metals Concentration Measured on Bistrita and Siret River Sides

2020 ◽  
Vol 71 (1) ◽  
pp. 350-354
Author(s):  
Alexandra-Dana Chitimus ◽  
Florin-Marian Nedeff ◽  
Ion Sandu ◽  
Cristian Radu ◽  
Emilian Mosnegutu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Pollution Sources ◽  
Municipal Waste ◽  
Sampling Points ◽  
River Banks

The main objective of the current research is to determine the content of heavy metals from the Bistrita and Siret River banks, respectively Siret River � in Bridge Holt area, Siret River � canal UHE and Siret River- downstream confluence Bistrita/Siret. The choice of sampling points took into consideration the areas where the pollution sources are located. Established maximum values were not exceeded in the case of mercury in the soil for all three sampling points Siret River � in Bridge Holt area, Siret River � canal UHE and Siret River- downstream confluence Bistrita/Siret. Exceeding values recorded in the sampling points Siret River � in Bridge Holt area, Siret River � canal UHE and Siret River- downstream confluence Bistrita/Siret (for cadmium, nickel and chrome) resulted from discharged residual waters, industrial platforms form Bacau city and the improper storage of municipal waste.

scholarly journals Research on heavy metal level and co-occurrence network in typical ecological fragile area

2021 ◽  
Author(s):  
Yiwei Zhao ◽  
Liangmin Gao ◽  
Fugeng Zha ◽  
Xiaoqing Chen ◽  
Xiaofang Zhou ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Human Factors ◽  
Human Life ◽  
Mining Area ◽  
Parent Material ◽  
Control Value ◽  
Pollution Levels ◽  
Soil Parent Material ◽  
Sampling Points

AbstractDue to the special sensitivity of typical ecologically fragile areas, a series of human life, mining, and other activities have a greater impact on the environment. In this study, three coal mines in Ordos City on the Loess Plateau were selected as the study area, and the pollution levels of heavy metals in the area were studied by measuring As, Hg, Cr, Cd, Cu, Ni, and Pb in the soil of 131 sampling points. Combined with the concept of “co-occurrence network” in biology, the level of heavy metals in soil was studied using geostatistics and remote sensing databases. The results showed that the concentrations of Hg, Cr, Ni, Cu, and Pb in more than half of the sampling points were higher than the local environmental background value, but did not exceed the risk control value specified by China, indicating that human factors have a greater influence, while Cd and As elements are mainly affected Soil parent material and human factors influence. Heavy metal elements have nothing to do with clay and silt but have an obvious correlation with gravel. Cd, Pb, As and Ni, Cd, Cr are all positively correlated, and different heavy metals are in space The distribution also reflects the autocorrelation, mainly concentrated in the northeast of the TS mining area and the middle of the PS mining area.

Spatial and seasonal trends of natural radioactivity and heavy metals in river waters of Epirus, Macedonia and Thessalia

Desalination ◽  
2008 ◽  
Vol 224 (1-3) ◽  
pp. 250-260 ◽  
Author(s):  
D. Karamanis ◽  
K. Stamoulis ◽  
K. Ioannides ◽  
D. Patiris
Keyword(s):  
Heavy Metals ◽  
Natural Radioactivity ◽  
Seasonal Trends ◽  
River Waters

scholarly journals Content of heavy metals in Haplic Chernozem under conditions of agrogenesis

2020 ◽  
Vol 169 ◽  
pp. 01024
Author(s):  
Anna Medvedeva ◽  
Olga Buryukova ◽  
Alexey Kucherenko ◽  
Yaroslav Ilchenko ◽  
Victor Chaplygin ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Winter Wheat ◽  
Total Content ◽  
Background Level ◽  
Resource Saving ◽  
Agricultural Technologies ◽  
Long Term Study ◽  
Mobile Forms ◽  
Zn And Cu In ◽  
The Impact

The paper presents the results of a long-term study on the content and distribution of heavy metals in Haplic Chernozem of agrocenoses in southern zone of Rostov Region. The impact of various agricultural technologies traditional (using moldboard ploughing) and resource-saving (minimum and No-till) on accumulation and mobility of Pb, Zn, Cu in Haplic Chernozem in winter wheat cultivation is considered. The total content of Pb, Zn, Cu in the winter wheat areas corresponds to the background level and does not exceed permissible concentrations. Low mobility of elements (Pb 2.0-3.0%; Zn and Cu up to 1.0% as a percentage of their total forms) is a regional soil feature. In addition, the low availability of Zn and Cu in soils is due to their removal with the crops in the absence of micronutrient fertilizer replenishment. The significant role of soil organic matter in the accumulation of both total and mobile forms of heavy metals in soil has been confirmed. The intensity of the cultivation methods used has a significant effect on the total content of Zn, Cu and on the mobility of Pb, Zn, Cu in Haplic Chernozem.

Investigation for heavy metals in river waters in the federal capital territory, North Central of Nigeria

2020 ◽  
Vol 4 (2) ◽  
pp. 213-219
Author(s):  
A. T. Talabi ◽  
K. O. Odunaike ◽  
L. P. Akinyemi ◽  
B. O. Bashiru
Keyword(s):  
Heavy Metals ◽  
North Central ◽  
River Waters

Investigation of heavy metals transportation from soil to the pine tree

2004 ◽  
Vol 50 (3) ◽  
pp. 239-244 ◽  
Author(s):  
E. Baltrénaité ◽  
D. Butkus
Keyword(s):  
Heavy Metals ◽  
Forest Ecosystems ◽  
Heavy Traffic ◽  
Mineral Particles ◽  
Pine Tree ◽  
Zn Concentration ◽  
Cr Concentration ◽  
The Impact ◽  
Mn Concentration ◽  
Common Tree

The Scots pine (Pinus sylvestris L.) is the most common tree in Lithuanian forests. Research on the impact of pollutants on pines allows us to evaluate pollutants in a major part of Lithuanian forests. Heavy metals (HMs) are among the major pollutants entering forest ecosystems in different ways: in their wet and dry form they come from local or distant sources of emission by being transported from seas alongside with nutrients and sea salt, washed up from the dead plants accumulated in soil, and together with mineral particles brought by wind or water. During the period of investigation, a decrease in the Cr concentration in pine rings is seen. High Zn concentrations (in 1987-1989 Zn concentration was 27.6 mg·kg-1) in the pine may be caused by emissions from heavy traffic. The results have shown that Mn has the highest concentration as compared with that of other HMs in the soil around the pine (at the depth of 30-40 cm, Mn concentration is 780 mg·kg-1). In comparison with other HMs, Cu and Zn have the largest factor of transport from the soil to the wood (0.39 and 0.49 respectively).

Assessment of some heavy metals concentration in soil and irrigated vegetable (Hibiscus sabdariffa) in Mubi Metropolis

2018 ◽  
Vol 3 (01) ◽  
pp. 1-5
Author(s):  
I. D. Bake ◽  
H E. Shehu ◽  
H. M. Dzara
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Atomic Absorption ◽  
Agricultural Soil ◽  
Research Work ◽  
Pollution Index ◽  
Heavy Metal Concentration ◽  
Hibiscus Sabdariffa ◽  
Zn Concentration ◽  
Negative Effect

This research work aimed at assessment of some heavy metal concentration (Fe, Mn, Cu, Ni, Pb, Zn) in soil and their uptake by Hibiscus sabdariffa vegetable in irrigation areas, and to ascertain the danger posed from the consumption of these vegetable to human health. Samples were collected from four different locations and analyzed using bulk scientific Atomic Absorption Spectrophotometer (AAS). The concentration of heavy metals (mg/kg) in agricultural soil collected from different sites along river Yadzaram ranged from 8.33 to 15.54 for Fe, 0.051 to 0.227 for Cu, 7.245 to 8.545 for Mn, 0.001 to 0.002 for Ni, 0.474 to 1.744 for Zn, and 0.001 to 0.005 for Pb. Fe concentration in plants (Hibiscus sabdariffa) ranged between 6.50 to 16.42 mg/kg in all four sites of the studied area, Cu values ranged between 0.30 to 0.72 mg/kg. The concentration of Mn in plants ranged from 2.73 to 12.09 mg/kg, Ni concentration in plant samples from four site varied from 0.001 to 0.004 mg/kg, Zn concentration varied from 0.98 to 1.99 mg/kg and Pb range values of 0.00 to 0.007 mg/kg. The contamination/ pollution index of heavy metals calculated for soil revealed that all sites were polluted with Fe at Kwacham, Wuro-gude, Kwachiffa and Sabon Gari site which suggested that it might pose negative effect on plants and soil environments while Ni, Zn, Mn, Cu and Pb are below range and will have no negative effect on soil, plant and environments.

Heavy metals in rivers and soils of central Chile

1998 ◽  
Vol 37 (8) ◽  
pp. 251-255 ◽  
Author(s):  
B. Eduardo Schalscha ◽  
T. Ines Ahumada
Keyword(s):  
Heavy Metals ◽  
Copper Content ◽  
Previous Treatment ◽  
Copper Mining ◽  
Inland Waters ◽  
Waste Waters ◽  
Domestic Waste ◽  
Central Chile ◽  
River Waters ◽  
Polluted Waters

Industrial and domestic waste waters in Chile are discharged without previous treatment into rivers and other inland waters which are used to irrigate agricultural lands. The present study reports on results obtained when analyzing inland waters for Cd, Cu, Zn, Hg and As. Copper content was found to be high in most of the rivers studied and its sources were identifiable copper mining wastewaters. Cadmium and Zn levels are above accepted levels in some instances, whereas Hg and As content of river waters under study studied were found to be within accepted levels. The more reactive chemical forms of heavy metals in soils irrigated with polluted waters, as determined by sequential extraction, were found to be the most abundant ones. These forms are easily bio-available.

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