Università degli studi di Sassari, Facoltà di Agraria - Gallizzi
Abstract
The adsorpition of six s-triazines of the chloro- and methoxy-analogue
series on a bentonite from Uri (Sardinia) was studied. The H-bentonite
shows a higher adsorption than the Na-bentonite. The order of adsorbabiIity
of chloro-s-triazines was trietazine > atrazine > propazine; by me·
thoxy-s-triazines it was simetone > atratone > prometone.
The amount of simetone adsorbed by the H-bentonite occurred in
excess of the CEC. The relationship between adsorption, solubility and
lenght of the lateral chain of the s-triazine was confirmed. The adsorption
was mainly due to van der Waals forces, H-bonding and ionic exchange