Sorption kinetics of isoproturon and assessment of its Ecotoxicity on Lemna minor

Atiqur Rahman,Quazi Forhad Quadir

doi:10.3329/ralf.v1i1.22347

Abstract

The study was carried out to investigate the ecotoxicity of Isoproturon on Lemna minor and the interaction of the EC50 value of the chemical with sorption behaviour of the chemical in soil. The sorption isotherms (Kf and KOC) for Isoproturon were determined for three different soils having various organic carbon and clay content. EC50 for Lemna was determined both with and without soil. Both the Freundlich adsorption coefficient (Kf) and normalized sorption coefficient (KOC) values varied with different types of soil. There was moderate correlation between the log Kf and log KOC existed. The regression study revealed a strong relationship between log KOC and organic carbon and between log KOC and soil clay content. There EC50 value for Lemna grown with soil was higher than that grown without soil. However, the difference was statistically insignificant. Greater degree of inconsistency in various data suggests the reiteration of the study.DOI: http://dx.doi.org/10.3329/ralf.v1i1.22347 Res. Agric., Livest. Fish.1(1): 13-18, Dec 2014

Highlights

SORPTION KINETICS OF ISOPROTURON AND ASSESSMENT OF ITS ECOTOXICITY ON Lemna minor Quazi Forhad Quadir* and Atiqur Rahman
The study was carried out to investigate the ecotoxicity of Isoproturon on Lemna minor and the interaction of the EC50 value of the chemical with sorption behaviour of the chemical in soil
The organic carbon and clay contents of the test soils are shown in Table 1. 10 g of air dried soil were weighed into a polypropylene centrifuge bottle and mixed with 20 ml standard IPU solutions

Summary

Introduction

SORPTION KINETICS OF ISOPROTURON AND ASSESSMENT OF ITS ECOTOXICITY ON Lemna minor Quazi Forhad Quadir* and Atiqur Rahman. The study was carried out to investigate the ecotoxicity of Isoproturon on Lemna minor and the interaction of the EC50 value of the chemical with sorption behaviour of the chemical in soil. The sorption isotherms (Kf and KOC) for Isoproturon were determined for three different soils having various organic carbon and clay content.

Results

Conclusion