ADSORPTION OF DYFONATE (O-ETHYL-S-PHENYL ETHYLPHOSPHONODITHIOATE) ON HUMIC ACID
- 1 February 1977
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Soil Science
- Vol. 57 (1) , 9-13
- https://doi.org/10.4141/cjss77-002
Abstract
The adsorption of Dyfonate (O-ethyl-S-phenyl ethylphosphonodithioate) [an organophosphorus insecticide] was studied on humic acid (HA) saturated with various cations (Fe3+, Al3+, Cu2+, Zn2+, Co2+, Mn2+, Ni2+, Ca2+, Mg2+ and H+). The amount of Dyfonate adsorbed was affected by the cation with which the HA was saturated. The adsorption process could be described empirically by a Freundlich-type isotherm. The K and .**GRAPHIC**. constants of the Freundlich equation decreased and increased, respectively, with increase in temperature. The data suggest a physical type of adsorption.This publication has 0 references indexed in Scilit: