Influence of complexation phenomena with multivalent cations on the analysis of glyphosate and aminomethyl phosphonic acid in water

Impact of Roundup on the marine microbial community, as shown by an in situ microcosm experiment

“…This could be due to an underestimation of the glyphosate present in the samples, or to its possible adsorption to the bottle walls and/or on the organic matter or multivalent cations present in seawater. Indeed, Freuze et al (2007) demonstrated that the FMOC method applied in this study, could underestimate both glyphosate and AMPA in the presence of multivalent cations. They also showed that only free forms of AMPA and glyphosate were able to react with the FMOC reagent.…”

A Fast and Simple Analysis of Glyphosate in Tea Beverages by Capillary Electrophoresis with On-Line Copper(II)-Glyphosate Complex Formation

“…[19][20][21] When glyphosate and Cu(II) ion were mixed, [Cu(II)-glyphosate] − , whose stability constant was approximately 12, 18) was the most abundant species at pH 4 and 7. 22) This means that glyphosate forms a complex with the Cu(II) ion during electrophoretic runs and that the complex migrates as an anion.…”

“…Glyphosate forms a stable complex with copper (Cu)(II) ion. [15][16][17][18] The Cu(II)-glyphosate complex has a strong UV absorption. The complex formation makes it easier to develop a fast and simple analysis of glyphosate by CE with UV detection.…”

Liquid chromatographic determination of glyphosate and aminomethylphosphonic acid residues in rapeseed with MS/MS detection or derivatization/fluorescence detection

“…High-performance liquid chromatography with fluorescence detection (HPLC-FLD) or ultraviolet detection (HPLC-UV) [23,26,27] have an excellent track record in its determination. Other techniques include capillary electrophoresis [28,29], ion chromatography with conductivity [30] or fluorescence [31], gas chromatography [32,33], immunoassays [34,35], nuclear magnetic resonance [36], and integrated pulse amperometry [37].…”