Groundwater quality for drinking and agricultural purposes, Saleh Abad (NE Iran): geochemical and statistical approaches

Mahaqi, Ali

doi:10.1007/s13146-021-00720-x

Cited by 6 publications

(2 citation statements)

References 63 publications

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“…Except for Cl À , all the observed values are typical for a sedimentary geological setting with the widespread presence of carbonates and evaporite mineral phasesincluding gypsum and anhydrite, not halite. Then, it concludes that halite has a minor role in releasing Cl À in water supplies (Mahaqi 2021). Before and after the event, the TDS of the Taihui water had a good correlation with SO 2À 4 , Cl À , Ca 2þ and Mg 2þ .…”

Section: Correlation Analysismentioning

confidence: 84%

Hydrogeochemical evolution of Taiyuan Formation limestone water under the disturbance of water inrush from karst collapse column in Taoyuan Coal Mine, China

Guo

Gui²,

Wei

et al. 2022

Water Supply

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The project implementation of water inrush and its treatment ensures the safe mining of coal mines, but also causes certain disturbance to the hydrogeochemistry of primary limestone water. Based on the water inrush event in Taoyuan Coal Mine of Huaibei coalfield in 2013, the water rock interaction mechanism of Taiyuan Formation limestone water (namely, ‘Taihui water’) was discussed. The results showed that: (1) the relationship of cation mass concentration before and after water inrush was Na+ + K+ > Ca2+ > Mg2+; the correlation of anionic mass concentration before water inrush was SO42− > HCO3− > Cl−, while it was HCO3− > SO42− > Cl− after the event. Before the event, the main water quality types were SO4•Cl-Ca and SO4•Cl-Na; after the event, they mainly included HCO3− Na and SO4•Cl-Na (2) There is a strong positive correlation between mineral saturation index and pH value, that is, minerals are easy to dissolve under acidic conditions, while alkaline conditions will inhibit the dissolution and transformation of minerals. (3) The hydrogeochemical processes of limestone aquifer mainly included cation exchange, carbonate dissolution, pyrite oxidation, sulfate and silicate dissolution.

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Section: Correlation Analysismentioning

confidence: 84%

Hydrogeochemical evolution of Taiyuan Formation limestone water under the disturbance of water inrush from karst collapse column in Taoyuan Coal Mine, China

Guo

Gui²,

Wei

et al. 2022

Water Supply

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“…From Table 4, it is evident that the base salinity and salinity prediction resulting from the addition of K 2 SO 4 are lower than those obtained by adding KCl. This difference can be attributed to the higher adsorption of K + and SO 2− 4 ions from K 2 SO 4 compared to K + and Cl − ions from the soil solution, leading to a reduction in electrical conductivity due to the adsorption effect [39]. However, since Cl − is the most reactive anion in the soil, when equal amounts of KCl and K 2 SO 4 are added, the soil's ionic content is higher with the addition of KCl, resulting in higher soil conductivity and measured base salt content.…”

Section: Pwmer Sensor Kcl and K 2 So 4 Verification Resultsmentioning

confidence: 99%

ECWS: Soil Salinity Measurement Method Based on Electrical Conductivity and Moisture Content

Mu,

Han,

et al. 2024

Agronomy

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A novel method, ECWS, is proposed for measuring soil initial salinity content (b), based on the soil electrical conductivity EC and soil moisture content WS. This pioneering model rigorously establishes and incorporates the inherent potential correlation among soil bulk conductivity (ECa), soil solution conductivity (ECw), volume water content (θc), and soil salinity content (SSC). First of all, in order to delve the deeper relationship between ECa, ECw, θc and SSC, the soil salinity conductivity conversion coefficient ρa and soil leaching solution salinity conductivity conversion coefficient ρw were employed based on the formula of parallel conducting channels of the soil–water system, and a new measurement model of salinity content was constructed. After that, a mathematical analysis method was used to transform the coefficients of multiple sets of regression equations into matrices to solve ρa, ρw and b. Finally, to validate the accuracy of the proposed ECWS method, verification tests were conducted by utilizing TDR and PWMER sensors. The results with different salinity contents showed that the b size obtained by ECWS model were K2SO4 (1.84 g/kg), NaCl (1.91 g/kg), and KCl (1.92 g/kg). The maximum deviation was less than 0.08 g/kg (relative error less than 5%). The results showed that the influence of different anions and cations on the measurement of salinity content Cl− is greater than that of SO42−, and K+ is greater than that of Na+. This study revealed the relationship between soil electrical conductivity and soil salinity content to a certain extent, and realized the transformation between them, which provided a new method for the measurement of soil salinity content, and also provided a reference for related research on the measurement of soil salinization.

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Potentially Toxic Element (PTE) Sources in the Middle Eocene Carbonate Aquifer, East El Minia, Egypt

Abdel-Aziz,

Salman,

Ismail

et al. 2023

Water Air Soil Pollut

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Water pollution with potentially toxic elements (PTEs) becomes a major threat to the validity of that water for drinking and agriculture and hence human life. The current study aims to evaluate the carbonate aquifer groundwater PTE content, sources, and impact on water quality. To achieve this goal, drilling cutoff of two wells and 30 groundwater samples were collected and chemically analyzed. The groundwater has TDS values ranged from 271.2 to 971.8 mg/l. Freshwater recharge process led to the continuous freshening of the aquifer and enhanced the forward ion exchange reactions. Carbonate and evaporate mineral dissolution/precipitation processes are the main controller of groundwater chemistry. Cd and As represented the most hazardous elements in these rocks followed by Pb. The presence of high concentrations of PTEs (As, Cd, Cr, and Pb) in water-bearing carbonate rocks has led to detritus of water quality and its unsuitability for drinking owing to the occurrence of these harmful elements in water. Even though the high concentrations of PTEs in the studied water, these elements occurred in low mobility and toxicity species: Fe(OH)3, Mn2+, (HAsO4)−2, Cd2+, Cr2O3, Cu2O, CuO, and PbCO3. This reflects the importance of studying element species rather than total concentration. Even though the unsuitability of this water for drinking owing to high concentrations of some PTEs, all of the samples were found to be suitable for irrigation.

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Groundwater quality for drinking and agricultural purposes, Saleh Abad (NE Iran): geochemical and statistical approaches

Cited by 6 publications

References 63 publications

Hydrogeochemical evolution of Taiyuan Formation limestone water under the disturbance of water inrush from karst collapse column in Taoyuan Coal Mine, China

Hydrogeochemical evolution of Taiyuan Formation limestone water under the disturbance of water inrush from karst collapse column in Taoyuan Coal Mine, China

ECWS: Soil Salinity Measurement Method Based on Electrical Conductivity and Moisture Content

Potentially Toxic Element (PTE) Sources in the Middle Eocene Carbonate Aquifer, East El Minia, Egypt

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