Effects of temperature on sorption-desorption processes of imidacloprid in soils of Croatian coastal regions

Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
Dalibor Broznić, Cedomila Milin

Abstract

Sorption-desorption behavior of imidacloprid in six soils collected from five coastal regions in Croatia at 20, 30 and 40°C was investigated using batch equilibrium technique. Isothermal data were applied to Freundlich, Langmuir and Temkin equations, and the thermodynamic parameters ΔH°, ΔG°, ΔS° were calculated. The sorption isotherm curves were non-linear and may be classified as L-type, suggesting a relatively high sorption capacity for imidacloprid. Our results showed that the K( sor ) ( F ) values decreased for all the tested soils as the temperature increased, indicating that the temperature strongly influences the sorption. Values of ΔG° were negative (-4.65 to -2.00 kJ/mol) indicating that at all experimental temperatures the interactions of imidacloprid with soils were spontaneous processes. The negative and small ΔH° values (-19.79 to -8.89 kJ/mol) were in the range of weak forces, such as H-bonds, consistent with interactions and partitioning of the imidacloprid molecules into soil organic matter. The ΔS° values followed the range of -57.12 to -14.51 J/molK, suggesting that imidacloprid molecules lose entropy during transition from the solution phase to soil surface. It was found that imidacloprid desorption from soi...Continue Reading

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Citations

May 23, 2015·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Mahrous M KandilWilliam C Koskinen
May 23, 2018·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Enock DankyiInge S Fomsgaard
Aug 7, 2014·Environmental Science and Pollution Research International·J-M BonmatinA Tapparo
Dec 3, 2014·Pest Management Science·Rebecca A MulliganRonald S Tjeerdema
Sep 4, 2013·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Dalibor Broznić, Čedomila Milin
Apr 14, 2019·Environmental Science and Pollution Research International·Sana ZulfiqarMuhammad Javed Akhtar
Dec 2, 2020·Environmental Pollution·Felipe Ogliari BandeiraDilmar Baretta
Jul 25, 2021·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Sun-Hwa Nam, Youn-Joo An

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