Equilibria of Cu(II) in alkaline suspensions of cellulose pulp

Interaction of pyridine-2,5-dicarboxylic acid with heavy metal ions in aqueous solutions

“…By knowing the total metal ion concentration and observing the shift of the reversible half-wave potential of metal ion reduction ( E r 1/2 ) in solution, polarography allows the determination of free (uncomplexed) metal ion concentration in the presence of different complexing agents [21,22,[24][25][26][27]. These types of results are of particular interest given the recent reports that free metal ions in biology are not as common as previously anticipated [28].…”

Copper and copper oxide nanoparticles in a cellulose support studied using anomalous small-angle X-ray scattering

“…In most cases, cellulose can be considered as an inert matrix [3], but drugs have also exhibited prolonged activity [4] when impregnated in cellulose. Cellulose and modified cellulosic materials are also used as sorbents of metal ions from aqueous solutions [5,6].…”

Analysis of Bioactive Olygosaccharide-Metal Complexes by Modern FTIR Spectroscopy: Copper Complexes

“…Ring deformations and scaffold vibrations were observed at 710, 660, 600, 570, and 525 cm -1 . In the experiment on the influence of the medium pH on a binding Cu(II) ion with different polysaccharides Norkus et al, 2002;Norkus et al, 2004), there is a possibility of gradual complexing, where their reforming starts at pH 8. Degradation of the Cu(II)-RLMP complex begins at pH values higher than 12.…”