Characterization of the acidity of residual silanol groups in immobilized artificial membranes.

@article{Lzaro2008CharacterizationOT,
  title={Characterization of the acidity of residual silanol groups in immobilized artificial membranes.},
  author={Elisabet L{\'a}zaro and Clara R{\`a}fols and Mart{\'i} Ros{\'e}s},
  journal={Journal of chromatography. A},
  year={2008},
  volume={1182 2},
  pages={233-6}
}
Residual silanol acidity and activity of one immobilized artificial membrane (IAM) column have been measured from the retention of LiNO(3) in the column with a methanol/buffer (1mM in Na(+)) (60:40, v/v) mobile phase buffered to different pH values. Just one type of silanol with pssK(a)=7.61 (near the pH limit recommended by the manufacturer) was found, although these silanols show large activity. The results obtained have been compared with those obtained previously for Resolve C18, Resolve… CONTINUE READING