Modeling the binding of triazine herbicides to humic substances using capillary electrophoresis |
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Authors: | Mariana Lucio Philippe Schmitt-Kopplin |
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Institution: | 1. GSF—National Research Center for Environment and Health, Institute of Ecological Chemistry, Ingolstadter Landstra?e 1, 85764, Neuherberg, Germany
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Abstract: | The binding of 4 s-triazines herbicides and metabolites, ameline, hydroxyatrazine, atraton, and ametryn to 12 structurally different humic substances
was studied by affinity capillary electrophoresis. Binding data were confronted to the structural data of humic acids obtained
from spectrometric measurements (UV-Vis, FT/IR, NMR), elemental analysis and potentiometric titration. The results obtained
with principal component analysis and partial least square analysis clearly show the importance of carboxylic acidity and
aromaticity of the humic ligands in relation to the partial positive charge and relative hydrophobicity of the pesticides. |
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Keywords: | Humic substances s-triazine" target="_blank">s-triazine Binding Capillary electrophoresis SIMCA PCA ACE |
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