Adsorption Ratio


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Adsorption Ratio

The amount of a chemical adsorbed by a soil or sediment—the solid phase—divided by the amount of chemical in the solution phase, which is at equilibrium with the solid phase, at a fixed solid/solution ratio; the adsorption ratio is usually expressed as mg of chemical per gramme of soil or sediment.
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Caption: Figure 7: Adsorption behavior of PAni/MNPs over (a) pH in 20 mins and (b) immersion time at pH 5; (c) histogram presents maximum As(III) adsorption ratios of MNPs and PAni/MNP nanocomposite at an optimized condition.
Adsorption Ratio. The adsorption ratio, as shown in (4), is determined by three parameters n, T, and [E.sub.ads].
With the increase of initial MB concentration, the adsorption ratio decreased, and the MB adsorption amount of MC/CABs increased until the initial concentration reached 1,000 mg [L.sup.-1].
TABLE 4: Sodium (SAR) and potassium adsorption ratio (PAR), threshold concentration (TEC) and cation concentrations in applied water leading to a 15% reduction in the saturated hydraulic conductivity of surface and subsurface layers in a calcareous soil from the Riverina region of Australia [Table omitted]
Water quality for irrigation: Good quality of water for irrigation is characterized by acceptable range of electrical conductivity (EC), sodium adsorption ratio (SAR), residual sodium carbonate (RSC), magnesium adsorption ratio (MAR) and chlorides (Cl).
DO-Dissolved Oxygen; TA-Total Alkalinity; EC-Electrical Conductivity; TDS-Total Dissolved Solids; TH-Total Hardness; Cl--chloride ion; HCO [?] - bicarbonate ion; RSBC-Residual Sodium Bicarbonate; SAR-Sodium Adsorption Ratio; PS-Percent Sodium; KR-Kelly's Ratio; MAR-Magnesium Adsorption Ratio; PI-Permeability Index
However, the ratio law of Schofield (1947) paved the way to develop the concept of 'sodium adsorption ratio' in soil solutions from which the adsorption of Na by soils could be predicted using correlations between SAR and ESP.
The Water Quality Calculator can determine the salinity, sodium adsorption ratio, and pH of the irrigation water supplied when different sources of water are combined, says Dirk Richards of CSIRO.
* Estimate sodium adsorption ratio (SAR) and exchangeable sodium ratio (ESR) in salt-affected soils.
To ensure that the flow rates achieved in the previous rainwater experiment (Donn and Menzies 2005) were maintained, N[O.sub.3] and Cl were applied in a solution with a low sodium adsorption ratio (SAR).
T hese samples were analyzed for Electrical Conductivity (EC), Sodium, Calcium and Magnesium ions for determination of Sodium adsorption ratio (SAR).
In Figure 4 is shown the relationship between sodium and sodium adsorption ratio.