Etienne Bodart’s research while affiliated with Catholic University of Louvain and other places

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Publications (1)


Concentrations (lines) and proportion (pie charts) of molecule remaining in solution after extraction (n = 3; a) and extractability (n = 3) of Cu (b), As (c), Mo (d), and Pb (e) in the uncontaminated soil (Vieusart) following four extraction modalities: control (Milli-Q water), glyphosate (20 and 100 mg L⁻¹), formulated glyphosate (100 mg L⁻¹), and AMPA (100 mg L⁻¹). Numbers indicate the tested modality/control extractability ratios (the dashed line represents the control value). The Latin and Greek letters on the top of the bars represent the statistically significant differences (Kruskal–Wallis test and Dunn test with Bonferroni adjustment) for concentrations and substances, respectively
of tested modality/control extractability ratios (n = 3) for each studied element in the uncontaminated (Vieusart) and the three contaminated (Sainte-Walburge, Bressoux, and Aubange) soils. Colours represent the range of positive (purple) or negative (green) influence compared to the control
Concentrations (lines) and proportion (pie charts) of molecule remaining in solution after extraction (n = 3; a) and extractability (n = 3) of Cu (d, e, f), Pb (g, h, i), As (j, k, l), and Mo (m, n, o) in the three contaminated soils (Sainte-Walburge, Bressoux, and Aubange) following four extraction modalities: control (Milli-Q water), glyphosate (20 and 100 mg L⁻¹), formulated glyphosate (100 mg L⁻¹), and AMPA (100 mg L⁻¹). Numbers indicate the tested modality/control extractability ratios (the dashed line represents the control value). The Latin and Greek letters on the top of the bars represent the statistically significant differences (Kruskal–Wallis test and Dunn test with Bonferroni adjustment) for concentrations and substances, respectively
Extractability potential of trace elements of each tested modalities compared to extractability potential in the control (n = 3): glyphosate 20 mg L⁻¹ (a), glyphosate 100 mg L⁻¹ (b), formulated glyphosate 100 mg L⁻¹ (c), and AMPA 100 mg L.⁻¹ (d). The solid line represents the 1:1 ratio, and the dashed lines represent the 2:1 ratio (upper line) and 1:2 ratio (lower line)
Influence of glyphosate and aminomethylphosphonic acid on the mobility of trace elements in uncontaminated and contaminated agricultural soils
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September 2023

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Environmental Science and Pollution Research

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Hélène Dailly

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Glyphosate is one of the most widely used herbicides in the world. In addition to its herbicidal effect, glyphosate is a chelating agent that can form complexes with trace elements. Yet, agricultural soils can be contaminated with both organic and mineral substances, questioning the possible influence of glyphosate application on the trace element mobility. In this context, we specifically studied the extractability of trace elements in uncontaminated and metal-contaminated agricultural soils by adding glyphosate, formulated glyphosate, and aminomethylphosphonic acid (AMPA, a degradation product of glyphosate) in batch experiments from 0 to 100 mg L⁻¹. Results showed that, on average, glyphosate enhanced the extractability of the elements considered (e.g., As, Cd, Cu, Pb, and Zn) at 20 and 100 mg L⁻¹. Surprisingly, the uncontaminated soil highlighted the highest influence of glyphosate compared to the contaminated ones, likely resulting from a higher natural element extractability in the contaminated soils. Although formulated glyphosate presented an overall higher impact than unformulated glyphosate, it was evidenced that AMPA showed lower influence meaning that glyphosate degradation is beneficial to limit deleterious effects.

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