Glyphosate contamination in European rivers not from herbicide application?

Schwientek, M.; Rügner, H.; Haderlein, S.B.; Schulz, W.; Wimmer, B.; Engelbart, L.; Bieger, S.; Huhn, C.

doi:10.1016/j.watres.2024.122140

Water Research

2024

DOI: 10.1016/j.watres.2024.122140

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Glyphosate contamination in European rivers not from herbicide application?

M. Schwientek,

H. Rügner,

S.B. Haderlein

et al.

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Cited by 6 publications

References 42 publications

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Paper-based isotachophoretic preconcentration technique for low-cost determination of glyphosate

Franck,

Stopper,

Ude

et al. 2024

Anal Bioanal Chem

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Electrophoretic microfluidic paper-based analytical devices (e-µPADs) are promising for low-cost and portable technologies, but quantitative detection remains challenging. In this study, we develop a paper-based isotachophoretic preconcentration and separation method for the herbicide glyphosate as a model analyte. The device, consisting of two electrode chambers filled with leading and terminating electrolytes and a nitrocellulose strip as the separation carrier, was illuminated by a flat light source and operated with a voltage supply of 400 V. Detection was accomplished using a simple camera. Colorimetric detection was optimized through competitive complexation between glyphosate, copper ions, and pyrocatechol violet as a dye. The buffer system was optimized using simulations, (i) ensuring the pH was optimal for the demetallation of the blue pyrocatechol violet-copper complex [PV] to the yellow free dye and (ii) ensuring the electrophoretic migration of glyphosate into the slower [PV] for the colorimetric reaction. A new data evaluation method is presented, analyzing the RGB channel intensities. The linear range was between 0.8 and 25 µM, with a LOD of approximately 0.8 µM. The ITP separation preconcentrated glyphosate by a factor of 820 in numerical simulations. The method may be applied to control glyphosate formulations, especially in developing countries where herbicide sales and applications are poorly regulated. Graphical Abstract

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Paper-based isotachophoretic preconcentration technique for low-cost determination of glyphosate

Franck,

Stopper,

Ude

et al. 2024

Anal Bioanal Chem

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Effects of environmentally relevant concentrations of glyphosate and aminomethylphosphonic acid on biotransformation and stress response proteins in the liver of zebrafish (Danio rerio)

Morozov,

Yurchenko

2025

Comparative Biochemistry and Physiology Part D: Genomics and Pr

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Development of hydroxyapatite nanoparticles modified pencil graphite electrodes for voltammetric detection of paracetamol and phenol and greenness assessment of the sensor platform

Congur,

Efe

2025

Microchemical Journal

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Glyphosate contamination in European rivers not from herbicide application?

Cited by 6 publications

References 42 publications

Paper-based isotachophoretic preconcentration technique for low-cost determination of glyphosate

Paper-based isotachophoretic preconcentration technique for low-cost determination of glyphosate

Effects of environmentally relevant concentrations of glyphosate and aminomethylphosphonic acid on biotransformation and stress response proteins in the liver of zebrafish (Danio rerio)

Development of hydroxyapatite nanoparticles modified pencil graphite electrodes for voltammetric detection of paracetamol and phenol and greenness assessment of the sensor platform

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