D151 resin preloaded with Fe(3+) [denoted as R-Fe(3+)] was to investigate R-Fe(3+) as an adsorbent for glyphosate from water in the presence high concentration of salt. The adsorption mechanism revealed the coordination of Fe(3+) inside R-Fe(3+) with O atoms of P-O and N atoms in glyphosate molecule. The adsorption capacity of glyphosate by R-Fe(3+) was much larger than that of D151 resin preloaded with Ni(2+), Cu(2+), Na(+) and H(+). Even in glyphosate solutions containing 16% NaCl, R-Fe(3+) showed the constant adsorption capacity of glyphosate. The result provided the fi rst evidence of R-Fe...
