International Journal of Environmental Sciences

Volume 6 Issue 1 2015- July 2015  Pages: 1- 12  <<Previous    Next>>

Study of Sorption behavior of Atrazine toward soil

Author Information:

Sangita S. Satpute, Supriya Parkale, Lalasaheb M. Kashid
Vidya Pratishthan’s ASC college, Chemical Sciences Department, Vidyanagari, Baramati, Pune 413133

ABSTRACT

The objectives of this study are to evaluate the sorptioncharacteristics of Atrazine pesticide by fitting the sorption data to linear & nonlinear isotherm equation under Laboratory equation. The sorption of Atrazine was studied using a batch experiment technique. Adsorption studies are useful for generating essential information on the mobility of pesticide & their distribution in the soil & water. Generated data were tested with isotherm models and adsorption data describe well according to Freundlich  isotherm  ( r2= 0.97) In this work adsorption features were studied in details in fifteen representative soil samples of local areas of Pune district.

The soil sorption coefficient Kd and the soil organic carbon sorption coefficient Koc are the basic parameters used by environmental scientists in describing the environmental fate and behavior of pesticides. They are the measures of the strength of sorption of pesticide to soil adsorbent surfaces and thus directly related to both environmental mobility and persistence. Values of distribution coefficient (Kd) (mean calculated Kd: 0.6 to 3.1   mlg-1)  and  carbon sorption coefficient  Koc (mean calculated Koc 99.5)  indicated moderate to low adsorption for atrazine and consequently there is no considerable risk of ground water contamination. It was observed that proportion of organic matter play a major role in both sorption and desorption processes on soil samples as there is a linear relationship between Kd and organic matter of soil.

Keywords: Atrazine, distribution coefficient, isotherm, sorption

DOI:10.6088/ijes.6001

© 2015 Copyright by the authors, licensee Integrated Publishing Association.This is an open access article distributed under the Creative Commons Attribution License (3.0) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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