Gel chromatographic behavior of some metal ions

Distribution processes of inorganic solutes in gel chromatography

“…Most investigators have attempted to explain the gel chromatographic behavior of these small ions in terms of steric exclusion although other secondary effects, such as adsorption, are assumed to be involved in the separation process. The distribution coefficients and ionic sizes have been found well correlated in some cases, in agreement with predicted values based on the size exclusion effect (2)(3)(4).…”

“…The use of adsorbents such as Tenax GC and Carbopack B for the enrichment of water samples prior to the analysis of their chloropesticide content has been described in several reports and papers (2)(3)(4)(5). Pesticide extraction from soil samples using elution with appropriate solvent mixtures has also been reported (6).…”

Self‐concentration effects in preparative SEC of mineral electrolytes using nanoporous neutral polymeric sorbents

“…Indeed, size exclusion mechanism was found to efficiently operate in the separation of mineral electrolytes when mixtures of the electrolytes are sent through a chromatographic column packed with the nanoporous polymeric or carbonaceous sorbents [1][2][3]. Previously, this mechanism was found to basically govern separation of large mineral ions on highly crosslinked polysaccharides and polyacrylamidetype sorbents [15][16][17][18]. However, these experiments were performed according to the elution chromatography mode so that functional groups present in the packing materials strongly affected the retention of components of a small sample.…”