Enhanced desorption of herbicides sorbed on soils by addition of Triton X-100

Journal of Environmental Quality
M S Rodriguez-CruzM Sanchez-Camazano

Abstract

A study of the desorption of atrazine (1-chloro-3-ethylamino-5-isopropylamino-2,4,6-triazine) and linuron [1-methoxy-1-methyl-3-(3,4-dichlorophenyl)urea] adsorbed on soils with different organic matter (OM) and clay contents was conducted in water and in the presence of the non-ionic surfactant Triton X-100 at different concentrations. The aim was to gain insight into soil characteristics in surfactant-enhanced desorption of herbicides from soils. Adsorption and desorption isotherms in water, in all Triton X-100 solutions for atrazine, and in solutions of 0.75 times the critical micelle concentration (cmc) and 1.50cmc for linuron fit the Freundlich equation. All desorption isotherms showed hysteresis. Hysteresis coefficients decreased for linuron and increased or decreased for atrazine in Triton X-100 solutions. These variations were dependent on surfactant concentration and soil OM and clay contents. In the soil-water-surfactant system desorption of linuron from all soils was always greater than in the soil-water system but for atrazine this only occurred at concentrations higher than 50cmc. For the highest Triton X-100 concentration (100cmc), the desorption of the most hydrophobic herbicide (linuron) was increased more than 1...Continue Reading

Citations

Dec 4, 2013·Journal of Agricultural and Food Chemistry·Haim Katz, Yael G Mishael
Oct 21, 2005·Archives of Environmental Contamination and Toxicology·M S Rodriguez-CruzM Sanchez-Camazano
May 3, 2005·Water Research·Sung-Kil Park, Angela R Bielefeldt
Nov 16, 2013·Environmental Science and Pollution Research International·Eman M ElSayed, Shiv O Prasher
Jan 9, 2013·Journal of Environmental Management·Eman M ElsayedRamanbhai M Patel
Sep 22, 2010·Journal of Hazardous Materials·Binoy SarkarRavi Naidu
May 29, 2007·Journal of Hazardous Materials·M J Sánchez-MartínM S Rodríguez-Cruz
Jun 3, 2014·The Science of the Total Environment·Eman M ElSayed, Shiv O Prasher
Nov 27, 2014·Analytical and Bioanalytical Chemistry·Stefan OpitzHeidrun Rhode
Dec 5, 2018·Journal of Environmental Quality·Ling OuMatthew L Polizzotto

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