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library name : انستیتو تغذیه دانشگاه علوم پزشکی شهید بهشتی
Material Type : Latin Articles
Language of Document : English
Record Number : 61511
Doc. No : 161A
Main Entry : DEHGHANI M
Title & Author : ATRAZINE ADSORPTION-DESORPTION BEHAVIOR IN DAREHASALUIE KAVAR CORN FIELD SOIL [Article]; TAGHAVI M.,MALEKI N.,NADAFI K.,YOUNESIAN MASOUD
Title : IRANIAN JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE AND ENGINEERING (IJEHSE)
Volume Number : , Vol.2 ؛ No.4
Date : , (2005)
page : : 221 - 228
Abstract : Adsorption desorption behaviors of widely applied atrazine soil were studied, employing a batch technique as a case study in Darehasaluie Kavar corn field in Fars Province in 2005. Samples were collected into 0 to 20 cm soil depth, where was cultivated under a crop rotation )corn-wheat( during the past 10 years. Sorption kinetics exhibited two phenomena: an immediate rapid sorption )1.31إآ g/g soil after 12 hours( followed by a slow sorption process )1.37إآ g/g soil after 24 hours(. Desorption behavior of atrazine was similar to its adsorption, but at a very slower rate. Atrazine desorption efficiencies were much less effective and incomplete even after a long equilibration time )only 9.16percent after 96 hours(. The adsorption-desorption rate for most of the time was positively related to the amount of applied atrazine and the time required for equilibration )P<0.01(. Desorption data exhibited hysteresis phenomena. Atrazine adsorption data described well according to Freundlich )r2=0.95(, Langmuir )r2=0.82( and Temkin )r2=0.84( isotherms. However, the fit to Freundlich adsorption model in a non linear form )1/n <1( was closer than the others. Desorption isotherm could be well described by the Temkin )r2=0.96( and Freundlich )r2=0.92( isotherms, but the fit to Temkin model was closer than that of Freundlich.
Descriptor : ADSORPTION
Descriptor : DESORPTION
Descriptor : ATRAZINE
Descriptor : ISOTHERM
Descriptor : HYSTERESIS PHENOMENA
Added Entry : NASERI S.
: AMIN S.
 
 
 
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