Elemental composition of bottom-sediments from Pangani river basin, Tanzania: lithogenic and anthropogenic sources

2012 ◽  
Vol 94 (3) ◽  
pp. 525-544 ◽  
Author(s):  
Harieth Hellar-Kihampa ◽  
Sanja Potgieter-Vermaak ◽  
Katleen Van Meel ◽  
Giuliana Gatto Rotondo ◽  
Michael Kishimba ◽  
...  
Keyword(s):  
Elemental Composition ◽  
River Basin ◽  
Bottom Sediments ◽  
Anthropogenic Sources

scholarly journals Causes of variations of trace and rare earth elements concentration in lakes bottom sediments in the Bory Tucholskie National Park, Poland

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mariusz Sojka ◽  
Adam Choiński ◽  
Mariusz Ptak ◽  
Marcin Siepak
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Spatial Variability ◽  
Bottom Sediments ◽  
National Park ◽  
Anthropogenic Sources ◽  
Geochemical Processes ◽  
Natural Processes ◽  
Sources Of Pollution ◽  
Geochemical Indices

AbstractThe objective of this study was to analyse spatial variability of the trace elements (TEs) and rare earth elements (REEs) concentration in lake bottom sediments in Bory Tucholskie National Park (BTNP); Poland. The following research questions were posed: which factors have a fundamental impact on the concentration and spatial variability of elements in bottom sediments, which of the elements can be considered as indicators of natural processes and which are related to anthropogenic sources. The research material was sediments samples collected from 19 lakes. The concentrations of 24 TEs and 14 REEs were determined. The analyses were carried out using the inductively coupled plasma mass spectrometry (ICP-QQQ). Cluster analysis and principal component analysis were used to determine the spatial variability of the TEs and REEs concentrations, indicate the elements that are the indicators of natural processes and identify potential anthropogenic sources of pollution. The geochemical background value (GBV) calculations were made using 13 different statistical methods. However, the contamination of bottom sediments was evaluated by means of the index of geo-accumulation, the enrichment factor, the pollution load index, and the metal pollution index. The BTNP area is unique because of its isolation from the inflow of pollutants from anthropogenic sources and a very stable land use structure over the last 200 years. This study shows high variability of TE and REE concentrations in lake sediments. The values of geochemical indices suggest low pollution of lakes bottom sediments. It was found that TEs originated mainly from geogenic sources. However, the concentrations of Li, Ni, Sc, Se, Be, Se, Ag, Re, Tl, Cd, Sb and U may be related to the impact of point sources found mainly in the Ostrowite Lake. Almost all REEs concentrations were strongly correlated and their presence was linked to with geochemical processes. The elements allowing to identify natural processes and anthropogenic pollution sources were Cr, Co, Cu, Ag, Cd, Zn, Bi, Re, Ba, Al and Rb in TEs group and Nd, Gd, Yb, Lu, Eu, Dy and Ce in REEs group. The analysis shows high spatial variability of TE and REE concentrations in lake sediments. The values of geochemical indices point to low pollution of lakes sediments. The anthropogenic sources only for two lakes had an impact on concentrations of selected TEs and REEs. The analyses allowed to identify elements among TEs and REEs documenting geochemical processes and those indicating anthropogenic sources of pollution.

Physicochemical and ecotoxicological based assessment of bottom sediments from the Luján River basin, Buenos Aires, Argentina

2012 ◽  
Vol 185 (7) ◽  
pp. 5993-6002 ◽  
Author(s):  
Leticia Peluso ◽  
Gustavo Bulus Rossini ◽  
Alfredo Salibián ◽  
Alicia Ronco
Keyword(s):  
River Basin ◽  
Bottom Sediments ◽  
Buenos Aires

Statistical Analysis of Heavy Metals in Bottom Sediments from the Tuo River in Suzhou City, China and its Implications for Source Identification

2012 ◽  
Vol 518-523 ◽  
pp. 1621-1624 ◽  
Author(s):  
Lin Hua Sun
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Statistical Analysis ◽  
Bottom Sediments ◽  
Source Identification ◽  
Anthropogenic Sources ◽  
Homogeneous Distribution ◽  
Principle Component ◽  
Suzhou City ◽  
The City

Heavy metal (Zn, V, Cr, Co, Cu and Pb) concentrations in bottom sediments from Tuo River in Suzhou City have been analyzed for determing their average levels and distribution concentrations, and statistical analysis (correlation, cluster and principle component) have been taken place for evaluating their lithogenic and/or anthropogenic sources. The results imply that the concentration of metals following the order Co>Zn>V>Cr>Cu>Pb with homogeneous distribution. The lithogenic metals (V, Cr and Co) are enriched out of the city, whereas the anthropogenic (industry and vehicle related) metals (Zn, V, Cu and Pb) are enriched in the city.

Metal and trace element assessments of bottom sediments from medium Tietê River basin, Sao Paulo State, Brazil: part II

2018 ◽  
Vol 316 (2) ◽  
pp. 805-818 ◽  
Author(s):  
D. I. T. Favaro ◽  
F. R. Rocha ◽  
M. Angelini ◽  
H. R. A Henriques ◽  
J. S. Soares ◽  
...  
Keyword(s):  
Trace Element ◽  
River Basin ◽  
Bottom Sediments ◽  
Sao Paulo ◽  
São Paulo ◽  
Paulo State ◽  
Tietê River ◽  
São Paulo State

scholarly journals Hydro-geochemical evaluation of groundwater for irrigation in the Ganges river basin areas of Bangladesh

2021 ◽  
Author(s):  
Md Shajedul Islam ◽  
Md. Golam Mostafa
Keyword(s):  
Water Quality ◽  
River Basin ◽  
Irrigation Water ◽  
Anthropogenic Sources ◽  
Total Hardness ◽  
Water Type ◽  
Irrigation Water Quality ◽  
Ganges River ◽  
The Ganges ◽  
Ganges River Basin

Abstract Groundwater is a vital source of irrigation water, and it provides over 80% of the irrigated water supply in Bangladesh. The study aimed to assess the status of irrigation water of the Ganges river basin areas in the middle-west part of Bangladesh through the hydrogeochemical characterization and classification of groundwater. The study parameters were pH, EC, TDS, Ca2+, Mg2+, total hardness, Na+, K+, B, Cl−, HCO3 −, SO 42−, NO3 −, and PO43− along with irrigation water quality index (IWQindex), Na%, soluble sodium percentage, sodium adsorption ratio, residual sodium bicarbonate, magnesium adsorption ratio, permeability index, and Kelley’s ratio. The results showed that most of the water samples were acidic in the pre-monsoon and alkaline in the post-monsoon seasons, and the water type was Ca-HCO3. The significant geochemical process in the area determined was calcite and dolomite mineral dissolution, and there was no active cation exchange, and silicate weathering occurred. The statistical analyses showed that both the geogenic and anthropogenic sources were controlling the chemistry of the groundwater aquifers. Concerning irrigation water quality, the results revealed that all the quality parameters and IWQindex (32.04 to 45.39) were within the safety ranges, except for the EC and total hardness. The study results would be useful for future groundwater monitoring and management of the Ganges basin areas of Bangladesh part.

scholarly journals Hydrogeochemical Characteristics and Controlling Factors of the Lhasa River under the Influence of Anthropogenic Activities

Water ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 948 ◽  
Author(s):  
Huanhuan Qin ◽  
Bai Gao ◽  
Liu He ◽  
Xiaohong Hu ◽  
Lei Dong ◽  
...  
Keyword(s):  
Surface Water ◽  
River Basin ◽  
Water Samples ◽  
Alkali Metals ◽  
Anthropogenic Activities ◽  
Anthropogenic Sources ◽  
Resource Exploitation ◽  
Geothermal Resources ◽  
Lhasa River Basin ◽  
Lhasa River

Anthropogenic activities have had diversiform impacts on the surrounding river and environments. A study on the surface water of the Lhasa River Basin was undertaken to assess its hydrogeochemical characteristics under the influence of anthropogenic activities. A total of 16 samples collected from the Lhasa River were analyzed for pH, electric conductivity (EC), oxidation-reduction potential (ORP), total dissolved solids (TDS), major cations (K+, Na+, Ca2+, and Mg2+), major anions (Cl−, SO42−, HCO3−, and NO3−), and trace metals. The pH of the analyzed water samples varied from 6.40 to 9.10, indicating alkaline in nature. The EC values varied from 77.3 to 213 μs/cm while the TDS values varied from 73.37 to 217.55 mg/L. HCO3− and SO42− are the dominant anions while Ca2+ and Na+ are the dominant cations in the river water. The concentration of alkaline earth metals (Ca2+ + Mg2+) exceed the alkali metals (Na+ + K+) and HCO3− dominates over SO42− + Cl− concentrations in the majority of the surface water samples. Ca2+-Mg2+-HCO3− and Ca2+-Mg2+-Cl− are the dominant hydrogeochemical facies in the surface water of the area. The water chemistry is mainly controlled by rock weathering with secondary contribution from anthropogenic sources. The content of trace elements in the Lhasa River is low, basically at the natural background value. The high content of individual elements is mainly due to the mineral resource exploitation and geothermal resources in the basin. Countermeasures and attention should be payed to these aspects, such as the construction of water conservancy facilities, urban economic development, the development of mining activities, and sewage and wastewater discharge, so as to protect the water quality and sustainable development of the Lhasa River Basin.

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