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Table 4 Effect of interferences on resolution (Rs) values of separated amino acids

From: Environmentally preferable solvents promoted resolution of multi-component mixtures of amino acids: an approach to perform green chromatography

Foreign substances Lysine-proline Proline-alanine Alanine-tyrosine
  (3.18) (3.40) (1.88)
Cations Zn2+ 2.0 1.20 1.22
Cu2+ - - -
Mg2+ 2.31 1.0 1.0
  Th4+ - - -
Anions Br- 2.0 1.24 1.78
CH3COO- 1.95 1.13 1.44
CO3 - 1.72 1.24 1.78
  NO3 2- 2.0 1.13 1.77
  1. *Each value is an average of four replicates.