Behavior Effects  of Sodium , Magnesium and Calcium on Clay Dispersion in Different Locations of Organic Matter

	Behavior Effects of Sodium , Magnesium and Calcium on Clay Dispersion in Different Locations of Organic Matter
journal of kerbala university
Article 1, Volume 2, Issue 4, 2006, Pages 211-217 PDF (0 K)
Abstract
This Study included to do series of folculation and dispersion experiments on sa-linity effects soils that have different organic matter to control between three ions effects calcium ,magnesium and sodium in ability on soil dispersion to know organic matter relation in effect on these phenomenon.Seven electrolyte concentrations ions were used(10,25,50,100,250,500,1000 ) mmol.c/L of NaCl ,MgCl2 and CaCl2. dispersed particles were detered by measuring optical density at 641 nm wave length on spectrometer .The re-sults of dispersion experiment have shown that sodium ionic increased as to two ions disper-sion magnesium and calcium but the sodium capability in dispersion was decreased in soils that having high organic matter and the values of optical density in these soils were (0.391,0.310,0.303) of Na+ ,Mg++ and Ca++ . the difference in relation to dispersion my be due to difference in the volume of hydration layers of Na+ and Mg++ compared with Ca++ ,The second reason in dispersion ratio difference between the two soils is the organic matter that made organic matter complex that will be on decreesing of thes ions e concentrations in soil suspension, and then the capability of ions decreased on clay dispersion that will lead to reduce soil destruction

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