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- Title
تأثیر نوع معدن الطین والقوة الأیونیة في العلاقة بین نسبة امتزاز الصودیوم (SAR) (والنسبة المئویة للصودیوم المتبادل (ESP) علاء حسین علي و محمد مالك یاسین.
- Authors
علي, علاء حسین; یاسین, محمد مالك
- Abstract
It is tested the relationship between sodium adsorption ratio (SAR) and exchangeable sodium percentage (ESP ) with the difference of clayed mineral( kaolinite and montmorillonite) and ionic strength, (I), (20,40,80,240) mmole. L‾¹. The results conducted that this relationship differed with the difference of clayed mineral and ionic strength (I). As well, these results contradicted to what United State Saline Laboratory (USSL) reached in 1954. It seems that clayed mineral (1:1), Kaolinite, has selectivity to sodium ions in comparison with calcium ions on increasing the ionic strength ( 80, 240 ) m.mole. L‾¹ while its selectivity to calcium ions increases with the decreasing of ionic strength ( 20,40 ) mmole. L‾¹. Whereas expanded clayed mineral, (2:1), Montmorillonite, which has internal and external faces has selectivity to sodium ions on minimum ionic strength (20, 40) mmole. L‾¹, and this selectivity decreased to sodium ions with the increasing of ionic strength ( 80, 240 ) mmole. L‾¹ where combination sites in common have selectivity to calcium ions against sodium ions according to diffuse double layer (DDL).
- Publication
Basrah Journal of Agricultural Sciences, 2016, Vol 29, Issue 1, p138
- ISSN
1814-5868
- Publication type
Article