Polyelectrolyte sorbents based on aliphatic ionenes for ion chromatography

2-4, 3-4, 2-8, 3-8, 3-6, 4-6, 6-8, 6-10-ionenes (polymers with quaternary n itrogen atoms in the main chain) served as modifiers in synthesizing polyel ectrolyte sorbents for ion chromatography. The approaches to the synthesis and their stability are discussed. Cluster analysis was applied to separate aliphatic ionenes to three groups as chromatographic modifiers, namely hyd rophilic, hydrophobic, and intermediate. Each group is characterized by a c ertain selectivity to sulfate, perchlorate, iodide and thiocyanate. The sor bents show high selectivity and efficiency up to 15 000 theoretical plates per meter. (C) 1999 Elsevier Science B.V. All rights reserved.