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Exchangeable sodium ration

Figure 4.26. Relationship between SAR and exchangeable sodium ration (ExNa/ExCa1/2 or ExNa/ExMgj/2 for soil minerals under different pH values (data taken from Fletcher et al., 1984). Figure 4.26. Relationship between SAR and exchangeable sodium ration (ExNa/ExCa1/2 or ExNa/ExMgj/2 for soil minerals under different pH values (data taken from Fletcher et al., 1984).
The second important factor, called the hardness factor for simplicity, includes contributions from Ba, F, hardness. Mg, TDS, Sr, and sulfate. This factor characterizes the upper aquifer waters. One may rationalize the distinction between upper and lower aquifers by hypothesizing a natural "softening" in the lower aquifer where ion-exchange of calcium, magnesium and sulfate occurred with sodium and fluoride. It is Interesting to note that fluoride occurs in both factors and it alone provides a good aquifer identifier. [Pg.31]

See other pages where Exchangeable sodium ration is mentioned: [Pg.285]    [Pg.336]    [Pg.28]    [Pg.143]    [Pg.282]    [Pg.360]    [Pg.285]    [Pg.1424]    [Pg.340]    [Pg.565]    [Pg.609]    [Pg.70]    [Pg.1128]    [Pg.392]    [Pg.103]    [Pg.198]    [Pg.94]    [Pg.232]    [Pg.589]    [Pg.49]    [Pg.368]   
See also in sourсe #XX -- [ Pg.287 ]



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