scholarly journals Hydrochemical Characteristics and Groundwater Quality in the Island of Lesvos, Greece

2013 ◽  
Vol 14 (4) ◽  
pp. 422-430
Keyword(s):  
Volcanic Activity ◽  
Hydrothermal Activity ◽  
Sodium Adsorption Ratio ◽  
Acidic Ph ◽  
Chemical Analyses ◽  
Hydrochemical Characteristics ◽  
Sampling Locations ◽  
Groundwater Samples ◽  
The Us ◽  
High Concentrations

The hydrochemical characteristics of groundwater in the island of Lesvos, Greece, were studied based on chemical analyses of groundwater samples collected from 30 locations covering all the island’s major aquifers hosted in different lithological formations. The Plagioclase dissolution was found to be responsible for the observed high concentrations of Na and Ca in the majority of volcanic aquifers. Ultrabasic rocks enrich groundwater with magnesium while intense hydrothermal activity and extensive alteration zones, which exist locally as a result of a recent volcanic activity, are associated with the existence of sulphate type groundwater and acidic pH in some areas. Seawater intrusion was found to be associated with high Cl- concentrations in three sampling locations. Based on sodium adsorption ratio, percent sodium, and the US salinity diagrams, the vast majority of groundwater samples were evaluated as suitable for irrigation purposes.

scholarly journals Hydrochemical Characteristics and Evaluation of Groundwater Quality of Tumkur Amanikere Lake Watershed, Karnataka, India

2009 ◽  
Vol 6 (s1) ◽  
pp. S211-S218 ◽  
Author(s):  
D. S. Rajendra Prasad ◽  
C. Sadashivaiah ◽  
G. Rangnna
Keyword(s):  
Groundwater Quality ◽  
Catchment Area ◽  
Sodium Adsorption Ratio ◽  
Hydrochemical Facies ◽  
Hydrochemical Characteristics ◽  
Groundwater Samples ◽  
The Us ◽  
National Highway ◽  
Average Rainfall

The study area, Tumkur amanikere lake watershed, is located 0.5 km away from Tumkur Town on National Highway No.4. The main source of water for this lake is Kallur village tank catchment area. The average rainfall in the area is 965 mm. The submersion area of the lake at MWL is 204 hectares. Groundwater samples were collected from 22 stations covering the area during the year 2008 and were analyzed for physicochemical characters. The type of water that predominated in the study area is Ca-Mg-Cl type, was assessed based on hydrochemical facies. Besides, suitability of groundwater for irrigation was evaluated based on sodium adsorption ratio, percent sodium, and the US salinity diagrams.

scholarly journals Isotope characterisation of deep aquifers in the Gwda catchment, northern Poland

Geologos ◽  
2016 ◽  
Vol 22 (2) ◽  
pp. 137-147
Author(s):  
Tomasz Kotowski ◽  
Stefan Satora
Keyword(s):  
Chemical Analyses ◽  
Uncertainty Of Measurement ◽  
Deep Aquifers ◽  
Northern Poland ◽  
Groundwater Samples ◽  
Geological Formation ◽  
Basic Source ◽  
High Concentrations ◽  
Isotope Measurements ◽  
Hydrogeological Systems

AbstractWe present the results of isotope measurements (δ18O, δ D, δ13CDICand14C) and chemical analyses (TDS, TOC, HCO3-, SO42-, Cl-, NO3-, NH4+, Ca2+, Mg2+Na+and K+) conducted on groundwater samples collected from deep Cenozoic aquifers. These aquifers are the basic source of drinking water at numerous localities within the study area in northern Poland. Most of the δ18O determinations are characterised by low variability (i.e., > 70 per cent of δ18O are between -9.5‰ and -9.2‰). In most cases tritium activity was not detected or its content slightly exceeded the uncertainty of measurement (from ±0.3 T.U. to ± 0.5 T.U.). On average, 14C activity is twice higher than that under similar conditions and in hydrogeological systems. The δ13CDICvalues fall within the -13.6‰ to -12.8‰ range. A slight variability is observed when considering all isotope and chemical data within the study area and under these hydrogeological conditions. In general, the results of isotope and chemical analyses seem to be homogeneous, indicating the presence of closely similar groundwaters in the system, irrespective of geological formation. It is likely that there is a significant hydraulic connection between shallow and deep aquifers in the Gwda catchment, which indicates the potential for seepage of pollutants from shallow Pleistocene to deep Miocene aquifers. This can endanger the latter by e.g., high concentrations of NO3-, SO42-and Cl-ions from shallow aquifers within the Gwda catchment.

scholarly journals HYDROCHEMICAL CONDITIONS AND ENVIRONMENTS PROBLEMS IN THE LOW LAND ZONE OF PINIOS RIVER OF ILIAS DEPARTMENT

2004 ◽  
Vol 36 (4) ◽  
pp. 2002
Author(s):  
N. Λαμπράκης ◽  
Soren Jessen ◽  
Γ. Παναγόπουλος ◽  
E. Πυτικάκης
Keyword(s):  
Trace Elements ◽  
Thermal Water ◽  
Chemical Elements ◽  
Total Iron ◽  
Eastern Coast ◽  
Chemical Analyses ◽  
Reducing Conditions ◽  
Groundwater Samples ◽  
Pinios River ◽  
High Concentrations

The lower Pinios basin at the eastern coast of the Peloponnesus, hosts a system of alternative aquifers in the Pleistocene sediments of "Kalatha" formation. The elaboration of chemical analyses of the principal and trace elements of groundwater samples shown that a Redox environments and the presence of deep thermal water affect the groundwater quality. The aquifers sectors with reducing conditions are characterized by high concentrations of alkalinity, ammonia, total iron and total manganese groundwater. In the aquifers sectors with oxidizing conditions the values of the above parameters are low and the dominance of the chemical elements oxidizing forms are obvious.

scholarly journals Evaluation of the Hydrochemical Characteristics of Groundwater and its Suitability for Desalination to Product Potable Water in Tolul Al-Baj, Salahaldin, Iraq

2019 ◽  
pp. 2672-2684
Author(s):  
Ehab Mohammad Amen ◽  
Ektifa Taha A. ◽  
Mayada Ahmed A.
Keyword(s):  
Potable Water ◽  
Physicochemical Characteristics ◽  
Sodium Adsorption Ratio ◽  
Shallow Aquifer ◽  
Total Hardness ◽  
Chemical Analyses ◽  
Hydrochemical Characteristics ◽  
Two Samples ◽  
Main Components ◽  
Physical And Chemical

The study area, Tlul Al-Baj, suffers from a shortage of fresh water and most people depend on groundwater for different uses (drinking, domestic, irrigation, etc.). The present research aims to select the most suitable wells for desalination and production of potable water in Tlul Al-Baj area. Twenty-two samples of groundwater were collected to evaluate the hydrochemical properties of groundwater in the shallow aquifer in the area and to determine their suitability for desalination purposes. The study included measuring the physicochemical characteristics of groundwater, such as total hardness (TH), total dissolved solids(TDS), sodium adsorption ratio (SAR), sodium ratio (Na%), turbidity (Tur), pH…etc. Chemical analyses for the main components of water samples were also conducted, including cations such as sodium (Na+), potassium (K+), calcium (Ca++), and magnesium (Mg++), as well as anions such as chloride (Cl)-, sulfate (SO4=), bicarbonates (HCO3-), and nitrate (NO3-). In addition, concentrations of trace elements such as iron (Fe), copper (Cu), zinc (Zn), lead (Pb), nickel (Ni),cobalt (CO), chromium(Cr) and cadmium (Cd) were determined. The results of the physical and chemical analyses for the groundwater of the study area were compared with the international and local standards to determine their suitability for drinking uses and  to select the most suitable wells for the production of drinking water by desalination. The results indicated that the most suitable wells for desalination were wells numbered 4, 8, 9, 17, and 19.

Emissions of porewater compounds and gases from the subaquatic sediment disposal site “rodewischhafen”, hamburg harbour

1998 ◽  
Vol 37 (6-7) ◽  
pp. 87-93 ◽  
Author(s):  
M. Kussmaul ◽  
A. Groengroeft ◽  
H. Koethe
Keyword(s):  
Water Surface ◽  
Disposal Site ◽  
Dredged Material ◽  
Water Fluxes ◽  
Gas Emissions ◽  
Fine Grained ◽  
Deposit Surface ◽  
Groundwater Samples ◽  
High Concentrations ◽  
Mud Deposit

In the year 1993 a confined and unused harbour basin was used to store 290,000 m3 of fine-grained dredged material from Hamburg harbour. About 70% of the deposit surface was water covered. The edge areas were above the water table and covered with reed. Emissions of dissolved compounds into the groundwater, as well as surface gas emissions were measured from 1994 to 1996. As indicators for water fluxes from the deposit we used NH4+ and HCO3− because of their high concentrations in mud porewater in comparison to groundwater. The average concentrations of NH4+ and HCO3− in the porewater increased during 2 years from 85 to 250 mg NH4+ 1−1 and from 2.0 to 3.1 g HCO3− 1−1, while the groundwater samples showed constant values of 8 mg NH4+ 1−1 and 0.7 g HCO3− 1−1. Furthermore, the average gas emissions over the water surface were 3.2 g CH4 m−2 d−1 and 0.8 g CO2 m−2 d−1. In contrast, no methane and 3.0 g CO2 m−2 d−1 were emitted from land areas. The results indicated, that there were no significant emissions of mud porewater compounds into the groundwater but high CH4-emissions over the water covered surface of the mud deposit.

scholarly journals Impacts of Leachate Percolation on Ground Water Quality: A Case Study of Dhanbad City

2015 ◽  
Vol 17 (1) ◽  
pp. 162-174 ◽  
Keyword(s):  
Water Quality ◽  
Ground Water ◽  
Oxygen Demand ◽  
Quality Analysis ◽  
Solid Waste Disposal ◽  
Ground Water Quality ◽  
Potential Health ◽  
Groundwater Samples ◽  
High Concentrations ◽  
The Impact

<div> <p>This paper presents an assessment of the impact of uncontrolled and unscientific disposal of MSW on ground water in Dhanbad city, India. In this study, ground water quality around municipal solid waste disposal sites was investigated. Ground water quality analysis was carried out on samples collected at various distances from two disposal sites. The study has revealed that the ground water quality near dumping sites does not conform to the drinking water quality standards as per IS:10500. The impacts of indiscriminate dumping activity on ground water appeared most clearly as high concentrations of total dissolved solids, electrical conductivity, chlorides, chemical oxygen demand, and sulphates. High amount of metals like Na, K, Ca, Mg, Cd, Cu, Ni, Fe, Zn and Mn has also been detected in the groundwater samples near dumping area. Leachate characterization study also reveals high potential for groundwater contamination. Presence of feacal coliform contamination in groundwater samples indicates potential health risk for individuals exposed to this water.&nbsp;</p> </div> <p>&nbsp;</p>

scholarly journals Impact of Lime Stone on Groundwater and Soil

2020 ◽  
Vol 8 (5) ◽  
pp. 1101-1104
Keyword(s):  
Groundwater Contamination ◽  
Soil Structure ◽  
Andhra Pradesh ◽  
White Cement ◽  
Sampling Locations ◽  
Groundwater Samples ◽  
Guntur District ◽  
Extent Of Damage ◽  
Lime Stone

Unpredictable rapid increased growth of population with increased lifting of water from the deeper crusts of earth leads severe groundwater contamination and also unrepairable damage to soil structure and its stability. The extent and severalty of damage to the groundwater and the soil depends on the nature and the toxicity of the pollutants. It is very difficult to identify exact sources of groundwater contamination as the sources are hidden from the sight even the sources are predicted it is difficult to measure the extent of damage to the groundwater and soil. Taken to consider it, the present study was carried out at Piduguralla municipal region, Guntur district Andhra Pradesh which is surrounded by limestone beds. Due to the availability and the abundance of natural lime stone the area is very much familiar with other name as ‘Lime city’ which is surrounded by number of lime stone and white cement industries. It was observed that chemicals from lime stone quarries damaging quality of both groundwater and the soil. Twenty five sampling locations were identified to collect groundwater samples along with ten soil sampling locations. Samples were collected for three times during the study period of three months and the average values were noted as final values, water quality results were correlated with IS5000 – 2012 standards to find out the suitability of water consumption, all the tests for both groundwater and the soil were carried out by adopting standard analytical procedures.

scholarly journals STUDY OF THE PROGRESS OF SEAWATER INTRUSION WITHIN A PLAIN AREA OF RHODOPE PREFECTURE

2004 ◽  
Vol 36 (4) ◽  
pp. 2057 ◽  
Author(s):  
Φ. Πλιάκας ◽  
I. Διαμαντής ◽  
A. Καλλιώρας ◽  
Χ. Πεταλάς
Keyword(s):  
Electrical Conductivity ◽  
Grain Size ◽  
Seawater Intrusion ◽  
Groundwater Level ◽  
Specific Electrical Conductivity ◽  
Chemical Analyses ◽  
Conductivity Measurements ◽  
Groundwater Level Fluctuations ◽  
Plain Area ◽  
Groundwater Samples

This paper investigates the progress of seawater intrusion within the plain area of Xylagani - Imeros, in SW part of Rhodope Prefecture, as well as the suitability of groundwater for several purposes, after qualitative valuation of groundwater samples from selective wells of the study area. The conclusions also include some managerial suggestions for the confrontation of seawater intrusion. The investigation in question took place between 1994-1997 and 2002-2003, and involves the installation of piezometric wells, geoelectric sounding measurements, grain size analyses, monitoring of the groundwater level fluctuations in selective wells, specific electrical conductivity measurements and chemical analyses of water samples from selective wells of the study area.

The Use of Edible Plants for Rhizofiltration under Different Hydroponic Conditions

2021 ◽  
Author(s):  
juyeon Lee ◽  
minjune Yang
Keyword(s):  
Raphanus Sativus ◽  
Brassica Campestris ◽  
Solid Phase ◽  
Root Surface ◽  
Edible Plants ◽  
Groundwater Samples ◽  
Ph Conditions ◽  
Uranium Accumulation ◽  
High Concentrations ◽  
Hydroponic Conditions

&lt;p&gt;This study conducted a rhizofiltration experiment for uranium-removal with the edible plants (&lt;em&gt;Lactuca sativa, Brassica campestris &lt;/em&gt;L., &lt;em&gt;Raphanus sativus &lt;/em&gt;L., and &lt;em&gt;Oenanthe javanica&lt;/em&gt;) which generally consumed in South Korea. Various batch experiments were performed with different initial uranium concentrations, pH conditions, and genuine groundwater. The results showed the uranium accumulation and bioconcentration factor (BCF) of plant roots increase with an increase in initial uranium concentrations in the solution. Of the four plants, the amount of uranium accumulated in &lt;em&gt;Raphanus sativus &lt;/em&gt;L. roots was 1215.8 &amp;#956;g/g DW with the maximum BCF value of 2692.7. The BCF value based on various pH conditions (pHs 3, 5, 7 and 9) of artificial solutions was highest at pH 3 for all four plants, and the BCF value of &lt;em&gt;Brassica campestris &lt;/em&gt;L. was the maximum of 11580.3 at pH 3. As a result of rhizofiltration experiments with genuine groundwater contaminated with uranium, the BCF values of &lt;em&gt;Raphanus sativus &lt;/em&gt;L. were 1684.7 and 1700.1, the highest among the four species, in Oesam-dong and Bugokdong groundwater samples with uranium concentration of 83 and 173 &amp;#956;g/L. From SEM/EDS analysis, it was confirmed that uranium in contaminated groundwater was adsorbed as a solid phase on the root surface. These results demonstrate that &lt;em&gt;Raphanus sativus &lt;/em&gt;L. not only has a high tolerance to high concentrations of uranium and low pH conditions but also has a remarkable potential for uranium accumulation capacity.&lt;/p&gt;

The origin of Ti-oxide minerals below and within the eastern Athabasca Basin, Canada

2020 ◽  
Vol 105 (12) ◽  
pp. 1875-1888
Author(s):  
Erin E. Adlakha ◽  
Keiko Hattori ◽  
Mitchell J. Kerr ◽  
Brandon M. Boucher
Keyword(s):  
Regional Metamorphism ◽  
Hydrothermal Activity ◽  
Geological History ◽  
Epma Data ◽  
Athabasca Basin ◽  
Basement Rocks ◽  
History Of ◽  
Oxide Minerals ◽  
High Concentrations ◽  
Late Diagenesis

Abstract Titanium oxide minerals along the P2 fault in the eastern Athabasca Basin are characterized to constrain their origin and the geological history of the area. Two types of rutile are recognized in the basement rocks. Early rutile is disseminated in graphitic metapelite and quartzite, and it formed during regional metamorphism and post-metamorphic hydrothermal activity. Late rutile occurs as a needle-like alteration product of mica and likely formed during retrogression of the basement. In graphitic metapelite, early rutile commonly occurs with an assemblage of oxy-dravite, quartz, graphite, zircon, pyrite, biotite, and muscovite. In quartzite, rutile occurs with quartz, sillimanite, muscovite, and zircon. Metamorphic rutile is characterized by high Nb/Ta ratios (up to 47) with high concentrations of U (up to 126 ppm) and V4+ (up to 1.44 wt%; V valance calculated from EPMA data). Hydrothermal rutile contains distinctly low Nb/Ta (as low as 4.80) with high Ta (≤3050 ppm), and relatively low V (as V 3+; as low as 0.02 wt%) and U (as low as 9.06 ppm), reflecting fluids in reduced oxidation conditions. Anatase forms small anhedral (rarely coarse and euhedral) grains in the basal sandstones and altered basement rocks. In sandstones, anatase occurs with the late diagenetic mineral assemblage, whereas in basement rocks it commonly occurs with the clay-sized minerals related to uranium mineralization. In both rocks, anatase likely formed through the dissolution of rutile and/or other Ti-bearing minerals. Anatase is characterized by variably high Fe (up to 0.99 wt%; possibly contributed by hematite micro-or nanoinclusions) and U (up to 180 ppm). The mineral assemblages and composition of anatase suggest its protracted crystallization from relatively low temperature, oxidizing, acidic, uraniferous fluids of the sandstones during late diagenesis and hydrothermal activity. Therefore, the occurrence of anatase records the incursion of basin fluids into the basement, and the interaction of basement rocks with fluids responsible for the formation of the McArthur River uranium deposit. The results of this study confirm that Ti-oxides are useful in unraveling the geological history of an area that underwent prolonged hydrothermal activity.

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