Figures index

From

Spectroscopic and Electrochemical Investigations of N-(Phosphonomethyl)glycine (glyphosate) and (Aminomethyl)phosphonic Acid (AMPA)

A. Habekost

World Journal of Chemical Education. 2015, 3(6), 134-140 doi:10.12691/wjce-3-6-2
  • Figure 1. left: Copper sheets in water with glyphosate (left) and with AMPA (right); Right: Copper sheets in sodium carbonate with glyphosate (left), with AMPA (right), and without glyphosate or AMPA (middle)
  • Figure 2. Spectra of Cu-glyphosate and Cu-AMPA
  • Figure 3. CuO in sodiumcarbonate, Cu in sodiumcarbonate, Cu in KOH, and Cu in H2O after 12 hours, respectively
  • Figure 4. Titration of glyphosate and AMPA
  • Figure 5. Titration of Weed killer® and Roundup® compared to pure glyphosate
  • Figure 6. FTIR ofglyphosate (top) and AMPA (bottom)in a KBrpellet
  • Figure 7. FTIR of glyphosate (black), Cu-glyphosate after 10 minutes (red), and Cu-glyphosate (green line) after 12 hours
  • Figure 8. FTIR spectrum of AMPA (black) and Cu-AMPA (red)
  • Figure 9. I: GC spectra of the glyphosate derivate C, A: AMPA (contamination of the injection syringe), and B: glyphosate fragment m/z 464; II: GC and EI-mass spectrum of the AMPA derivate; III: GC-MS spectrum of both AMPA and glyphosate derivates simultaneously
  • Figure 10. GC-MS spectrum of Roundup®—glyphosate peakC at about eightminutes
  • Figure 11. Cyclic voltammograms of copper sulfate after deposition of copper (red, dotted curves) and of copper sulfate / glyphosate mixture (same conditions).Only the anodic curves are shown. The arrows indicate increase of the CV scan
  • Figure 12. Extraction equipment: heater, flask, Soxhlet with extraction thimble containing glyphosate and soil, and the reflux cooler