Groundwater

Johnson, Alan J.; Meyer, Gerald

doi:10.1029/rg013i003p00455

Cited by 2 publications

(1 citation statement)

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“…The Sodium Adsorption Ratio (SAR) in groundwater samples in the Kuala Langat area revealed the high concentration of SAR was 59.37 mg/L. The SAR shows a low concentration in the water when the value is below 10 mg/L and suitable for irrigation (Johnson and Meyer, 1975). However, the high SAR of more than 10 mg/L occurs the magnesium and calcium displacing by sodium and damaging the soil structure.…”

Section: Sodium Adsorption Ratio (Sar)mentioning

confidence: 99%

Analyzing the major ions and trace elements of groundwater wells in Kuala Langat, Selangor

Harun¹,

Roslan²,

Nurhidayu³

et al. 2021

Mal. J. Fund. Appl. Sci.

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The analysis of trace elements and major ions on groundwater wells in Kuala Langat become the aim of this paper for the purposes to investigate the quality of the groundwater to be considered as a suitable alternative water source for domestic purposes. The groundwater sampling was conducted in thirteen stations of groundwater wells. The groundwater samples were taken from the groundwater wells which scatter in agricultural areas in Kuala Langat, Selangor. The major ions parameters have analyzed in the groundwater samples were calcium, magnesium, potassium, bicarbonate, chloride, and sulfate (Ca2+, Mg2+, K+, Na+, HCO3 -, Cl-, SO4 2-). Meanwhile, the trace element parameters were aluminum, iron, manganese, strontium, zinc, and copper (Al, Fe, Mn, Sr, Zn, and Cu). Principal Component Analysis (PCA) was conducted to determine the influence of major ions and trace elements concentration in groundwater. Chloride, potassium, magnesium, strontium, calcium, and bicarbonate (Cl-, Na+, K+, Mg2+, Sr2+, Ca2+, and HCO3 -) were principal parameters in the first component of PCA analysis. The concentration of trace elements shows iron is the high concentration in groundwater samples. Hence, the concentration of iron in current sampling shows exceed the recommended level for raw water of the Ministry of Health. The influences from seawater intrusion and Sodium Adsorption Ratio (SAR) in groundwater also have been discussed.

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Section: Sodium Adsorption Ratio (Sar)mentioning

confidence: 99%

Analyzing the major ions and trace elements of groundwater wells in Kuala Langat, Selangor

Harun¹,

Roslan²,

Nurhidayu³

et al. 2021

Mal. J. Fund. Appl. Sci.

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The interaction of lakes with variably saturated porous media

Winter¹

1983

Water Resources Research

143

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Numerical simulation of variably saturated porous media indicates that groundwater recharge is variable in time and space, depending on the thickness of the unsaturated zone through which infiltrating water must move. The resulting complex, transient groundwater flow systems have significant impact on contiguous surface water. In very permeable media, small, local, closed groundwater flow systems can develop and dissipate within a few weeks to several months after major recharge. These have a direct effect on contiguous surface water by alternately causing seepage to and seepage from the surface water. The transient nature of these flow systems indicates that reversals of the direction of groundwater flow may be common. In less permeable media the same complex flow systems may occur, but the time for development and dissipation is much greater. For example, it is conceivable that small, local flow systems may exist for many months or years as a result of major recharge. Therefore directions of flow in such systems are more stable, and the effect on contiguous surface water also is more stable. The findings of this study indicate that wells and groundwater quality sampling sites need to be carefully located to define accurately water table configuration, groundwater recharge, direction of seepage through the beds of surface water bodies, and complex geochemical processes related to changing directions of groundwater flow.

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Groundwater

Cited by 2 publications

References 264 publications

Analyzing the major ions and trace elements of groundwater wells in Kuala Langat, Selangor

Analyzing the major ions and trace elements of groundwater wells in Kuala Langat, Selangor

The interaction of lakes with variably saturated porous media

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