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Published online 29 September 2005
Published in Soil Sci Soc Am J 69:1703-1710 (2005)
DOI: 10.2136/sssaj2004.0345
© 2005 Soil Science Society of America
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Sorption-Desorption Behavior of Atrazine in Soils Irrigated with Reclaimed Wastewater

Yaron Droria, Zeev Aizenshtatb and Benny Chefetza,*

a Dep. of Soil and Water Sciences, Faculty of Agricultural, Food and Environmental Quality Sciences, The Hebrew Univ. of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
b Casali Institute of Applied Chemistry, The Hebrew Univ. of Jerusalem, Jerusalem 91904, Israel



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  		Fig. 1. Sorption isotherms (filled symbols) and four sequential desorption steps (open symbols) of atrazine measured with Basra soils for 2- and 14-d cycles (bars represent standard deviations).

 


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  		Fig. 2. Sorption isotherms (filled symbols) and four sequential desorption steps (open symbols) of atrazine measured with Akko soils for 2- and 14-d cycles (bars represents standard deviations).

 


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  		Fig. 3. Distribution of the apparent hysteresis index (AHI) vs. initial atrazine concentration for Basra (top) and Akko (bottom) freshwater (open symbols)- and wastewater (filled symbols)-irrigated soils. Circles represent data collected for the 2-d sorption–desorption cycles and squares represent the 14-d sorption–desorption cycles.

 


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  		Fig. 4. Distribution of the apparent hysteresis index (AHI) vs. total atrazine contact time (sorption + desorption) for Basra (top) and Akko (bottom) freshwater (open symbols) and wastewater (filled symbols) irrigated soils. Squares, initial concentration of 1 mg L–1 atrazine; circles, initial concentration of 20 mg L–1 atrazine.

 




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