Double gradient ion chromatography using short monolithic columns modified with a long chained zwitterionic carboxybetaine surfactant.

@article{Rordin2006DoubleGI,
  title={Double gradient ion chromatography using short monolithic columns modified with a long chained zwitterionic carboxybetaine surfactant.},
  author={Colm{\'a}n O R{\'i}ord{\'a}in and Leon Barron and Ekaterina P. Nesterenko and Pavel N Nesterenko and Brett Paull},
  journal={Journal of chromatography. A},
  year={2006},
  volume={1109 1},
  pages={
          111-9
        }
}
The rapid separation of inorganic anions on short monolithic columns permanently coated with a long chained zwitterionic carboxybetaine-type surfactant is shown. The surfactant, N-dodecyl-N,N-(dimethylammonio)undecanoate (DDMAU), was used to coat 2.5, 5.0 and 10 cm long reversed-phase silica monoliths, resulting in a permanent zwitterionic exchange surface when used with aqueous based eluents. The unique structure of the surfactant results in a charge double layer structure on the surface of… CONTINUE READING
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