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Research Article Open access CC BY 4.0

Sorption Kinetics Study of Monocrotophos (MCP) Pesticide in Unsterilized Soil

Aloysius q A. Pam

Chemical Science International Journal · pp. 183–192 · Published 8 May 2015

10.9734/ACSJ/2015/17495

Abstract

Sorption Kinetics of monocrotophos in sandy soil was studied with the aim to establish its fate in the soil. The soil used was characterized with respect to soil pH, organic carbon, moisture, silt, clay and sand content. The sorption kinetic studies were carried out by observing the disappearance of monocrotophos in solution for several days. The kinetic studies showed that sorption of monocrotophos followed first order kinetics and were measured in terms of two processes namely; fast and slow sorption. The amount of pesticide sorbed by soil was found to increase with time and the values showed that the soil has low capacity to sorbe or retain monocrotophos when applied. During this time, rate constant for the disappearance from solution of monocrotophos were found to be 18.2× 100 s-1 and 0.248 ×101 s-1 respectively in fast and slow sorption processes. While, the rates for fast sorption and slow sorption were found to be 5.3885 s-1 and 0.0315 s-1.  

Monocrotophos sorption kinetic soil rate Freundlich isotherm

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Cited by 1

Toxicity and degradation of the insecticide monocrotophos

Ravneet Kaur, Dinesh Goyal · Environmental Chemistry Letters · 2019

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