Pesticide Research Journal
SCOPUSWeb of Science
  • Year: 2009
  • Volume: 21
  • Issue: 1

Adsorption Behaviour of Alachlor on Soil, FYM and Charcoal

  • Author:
  • M Jaya, SB Singh, G Kulshrestha, S Arya
  • Total Page Count: 4
  • Page Number: 101 to 104

*Division of Agricultural Chemicals, IARI, New Delhi-110 012

Department of Chemistry, C.C.R. (P.G.) College, Muzaffar Nagar-251 001

Abstract

Adsorption of alachlor on soil, farm yard manure (FYM) and charcoal was studied by batch equilibrium method. The adsorption of alachlor in 5–100 mg kg−1 concentration ranged from 79.7–89.3% in soil, 84.0–93.9% in FYM and 88.7–99.0% in charcoal. The adsorption isotherm of alachlor in all the three cases is L- type isotherm indicating alachlor adsorption is higher at low concentration and decreases at higher concentration. The adsorption isotherm fitted very well to the Freundlich equation as r2 values ranged from 0.98–0.99. The Kf values in FYM and charcoal was found to be higher than in soil indicating maximum adsorption in FYM and charcoal.

Keywords

Alachlor, adsorption isotherm, charcoal, FYM, soil