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Hydrogeochemical processes and evaluation of groundwater in Al-Salman area – Iraqi Southern Desert

Al-Mutawqi Kareem Ghafel, Ewaid Salam Hussein, Abed Salwan Ali, Al-Ansari Nadhir, Salim Mudhafar A., Kadhim Ameer J.

Journal of Water and Land Development

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2021

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no. 50

220--228

EN

A field survey has been conducted for the study area using the Global Positioning System (GPS) and geological and geomorphological maps of the area. The study area is one of the important areas in Iraq characterized by scarce water resources. The purpose of the study is to determine the hydro-chemical processes and their relationship to groundwater quality carried out in the southwestern desert region of Iraq, where the region lacks extensive studies of water resources. Twenty-eight groundwater samples were collected from wells distributed between the eastern borders of Saudi Arabia and the West Bank of the Euphrates River. For the purpose of hydrogeochemical analyses, the Fetter method was used to collect and examine samples. A large part of the recharge area is located in Saudi Arabia, where the groundwater bearing aquifer represented by the Dammam formation extends to Iraq and Saudi Arabian International borders. The analysis determined the order of cations (Na+ > Ca2+ > Mg2+ > K+) and anions (Cl– > SO42– > HCO3–). High values of the variation coefficient (CV) correspond to the concentration of potassium, sodium and chloride ions (CV: 68.7, 64.7 and 64 respectively). To identify the hydrochemical water facies, the Piper diagram was used. It was found that 53% of the water samples belong to the Na-Cl type and 40% are of the Ca-Mg-Cl type, while the rest of the samples are the Ca-Cl type. To identify geochemical processes, it was found that ion exchange processes via chloroalkaline indices 1 and 2 are prevalent between Ca2+, Mg2+ in the groundwater and Na+, K+ in water bearing rocks. To learn more about the processes that led to the concentration of certain ions, such as sodium, it was found that they tend to be of silicate minerals related to surface runoff of water in recharge areas and carbonic rocks. It was also found that rock / soil-groundwater interaction and evaporation processes were the formal processes in the saturated zone and evaporation in the unsaturated zone are prevalent processes of groundwater ion concentration.

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Climate change induced high altitude lake: Hydrochemistry and area changes of a moraine dammed lake in Leh Ladakh

Kaushik Himanshu, Ramanathan AL., Soheb Mohd, Shamurailatpam Monica Sharma, Biswal Kalyan, Mandal Arindan, Singh Chetan

Acta Geophysica

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2021

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Vol. 69, no. 6

2377--2391

EN

Himalayan glaciers are retreating, and glacial lakes are evolving and proliferating as a result of climate change. Glacier retreat marks in the formation and expansion, and sometimes outburst of moraine-dammed lakes. Lato Lake is one of the high-altitude and unexplored glacial lakes upstream of Gya-Miru village in the Leh-Ladakh region. This study is the first of its kind to assess hydrogeochemistry (HCO3−, SO4 2−, NO3 −, Cl−, F−, Ca2+, Mg2+, Na+, and K+) and studying the dynamics of a moraine-dammed lake in the Ladakh Himalayas. We observed substantial expansion of Lato Lake over the past 50 years between 1969 and 2019, and the areas of the lake have increased while the glacier area is reduced by 16.4% and 4.15%, respectively. The pH values ranging from 7.6 to 8.1 show slightly alkaline. HCO3 −, Ca2+, and SO4 2− were the most dominant ions during the study period 2018–19. The high (Ca2+ + Mg2+) and a low (Na+ + K+) ratio to the total cations show that Lato Lake receives ions from rock weathering, primarily from carbonate rocks. Gibbs and Na-Mixing plot also support the hydrogeochemistry of lake water was primarily controlled by rock weathering. HYSPILT backward trajectory model suggested that atmospheric input mainly originated from the seawater vapor transported by the summer monsoonal and westerly circulation systems. Results show that the lake has a substantial impact on the long-range transport of ocean water relative to local interferences.

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Influence of the Copper Smeltery in Krompachy (Slovakia) on Atmospheric Deposition

Hancul'ak J., Kurbel T., Kupka D., Spaldon T., Sestinova O., Findorakova L., Fedorova E.

Inżynieria Mineralna

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2014

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R. 15, nr 2

45--50

EN

The samples of atmospheric deposition, i.e. the both wet and dry ones, were collected in the area Krompachy in the vicinity of the copper smeltery during 2009 – 2013. The sampling was realized by means of seven sites located from 1.2 to 10 km of main source of pollution. Major ions (Ca2+, Mg2+, Na+, K+, NH4+, SO42–, NO3–, Cl–, F–) and trace elements (Fe, Al, Mn, Zn, Pb, Cu, Cr, Cd, As) were assayed. The atmospheric deposition fluxes of trace elements were determined separately for “water soluble” and “insoluble” phase. An influence of the sampling sites distance from the copper smeltery on the absolutely values of major ions were not recorded. On the other hand the deposition of trace elements is clearly effected by the copper smeltery operation. The ions fluxes which have origin in gaseous precursors (NO3–, SO42–) are relatively well-balanced at all sampling sites. The determination of evaluated trace elements in atmospheric deposition, Pearson´s cross-correlation analysis, enrichment factor (EF) and seasonal variation showed a significant effect of the copper smeltery on the deposition flow quantity of zinc, lead and cadmium. Iron, aluminium, manganese and chromium have mainly source in a soil horizon and their deposition is significantly higher in the summer season. The elements in order Al, Fe, Cr, As, Pb and Mn were fixed mainly in the insoluble phase. Zinc, cadmium and a lesser extent of copper were predominant bound in soluble phase. The high values of deposition fluxes of cadmium (0.6–4.8), zinc (85.6–517.6), copper (24.1–159.2) and lead (9.0–116.7 μg.m–2.day–1) were detected in comparison with different regions. The highest values of these elements deposition fluxes were detected on sampling sites up to 3 km from copper smeltery.

PL

Próbki opadów atmosferycznych, zarówno mokrych i suchych, zebrano w obszarze Krompachy w pobliżu huty miedzi w latach 2009 – 2013. Pobieranie próbek wykonywane było w siedmiu miejscach położonych od 1,2 do 10 km od głównego źródła zanieczyszczenia. Oznaczane były jony główne (Ca2+, Mg2+, Na +, K +, NH4 +, SO42-, NO3, Cl, F) i pierwiastki śladowe (Fe, Al, Mn, Zn, Pb, Cu, Cr, Cd, As). Strumienie pierwiastków śladowych w depozytach atmosferycznych zostały określone odrębnie dla fazy “rozpuszczalnej w wodzie” i “nierozpuszczalnej”. Wpływ odległości miejsc pobierania próbek od huta miedzi na absolutne wartości zawartości jonów głównych nie były rejestrowane. Z drugiej strony osadzanie pierwiastków śladowych jest wyraźnie efektem działań huty miedzi. Strumienie jonów, które mają źródło w prekursorach gazowych (NO3-, SO42-) są stosunkowo dobrze zrównoważone na wszystkich miejscach pobierania próbek. Określenie ocenianych pierwiastków śladowych w depozycji atmosferycznej, korelacja krzyżowa analizy Pearsona, współczynnik wzbogacenia i sezonowe wahania wskazują na znaczący wpływ huty miedzi na ilość osadzanego cynku, ołowiu i kadmu. Żelazo, aluminium, mangan i chrom mają źródło głównie w glebie i ich osadzanie jest znacznie wyższa w sezonie letnim. Pierwiastki w kolejności Al, Fe, Cr, As, Pb i Mn były związane głównie w fazie nierozpuszczalnej. Cynk, kadm i w mniejszym stopniu miedź były przeważnie związane w fazie rozpuszczalnej. Wysokie wartości strumieni osadzania kadmu (0,6 - 4,8), cynku (85,6 – 517,6), miedzi (24,1 -159,2) i ołowiu (9.0-116.7 μg . m-2 . dzień-1) zostały wykryte w porównaniu z innymi regionami. Najwyższe wartości strumieni depozycji tych pierwiastków zostały wykryte w miejscach pobierania próbek do 3 km od huty miedzi

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Environmetric assessment of pollutant concentrations effects on forest ecosystems

Antonova D., Antonov L., Petrov V., Simeonov V., Tsakovski S., Braun S., Flueckiger W.

Chemia i Inżynieria Ekologiczna

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2004

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Vol. 11, nr 6

439--448

EN

The present communication deals with the application of cluster and principal components analysis to a data set collected by monitoring wet precipitation at three different sampling sites. The idea is to identify latent factors responsible for the data structure at each site and, thus, to get information on their effects on the forest ecosystems. It has been found that a significant separation between the sites is achieved based on the analytical results and the identified factors correspond to acidic, mineral and crustal effects on the forest ecosystem.

PL

Przedstawiono wyniki zastosowania chemometrycznej analizy klasterów (grup) oraz analizy składowych głównych dla danych monitoringu ciekłego opadu atmosferycznego z trzech różnych miejsc. Celem była identyfikacja czynników ukrytych, odpowiedzialnych za strukturę danych z każdego miejsca pobierania próbek. W rezultacie otrzymano informacje o wpływie tych czynników na ekosystemy leśne. Zarówno doświadczalne dane analityczne, jak i zidentyfikowane 3 czynniki ukryte (kwasowy, mineralny i fazy krystalicznej) wskazują na znaczące różnice między badanymi ekosystemami leśnymi.