Metal ion capillary electrophoresis with direct UV detection effect of a charged surfactant on the migration behaviour of metal chelates

Effect of perfluorinated surfactant as additive of background electrolyte for capillary electrophoresis of inorganic cations

“…Many transition metals have been analyzed by CE [7][8][9] and micellar electrokinetic chromatography (MEKC) [10], using complexing agents, such as α-hydroxyisobutyric acid, pyridylazoresorcin, and/or ethylenediaminetetraacetic acid, which are either added to the background electrolyte (BGE) or to the sample before introduction to the capillary. Moreover, the applications to the real water were reported on environmental waters such as river [11,12], sewage [12], rainwater [13], or seawater [14]; and body fluids such as human sweat [15], tear [16], serum [17], or plasma [18].…”

Metal Complex Separation with On-line Sample Preconcentration in Micellar Electrokinetic Chromatography

“…4,9 Several MEKC separations of metal complexes in MEKC have been reported thus far. [10][11][12][13][14][15][16][17][18][19][20][21][22] The separation selectivity of metal complexes can be expected by not only hydrophobic interactions with the micelles, but also polar interactions. In many cases, the separation behavior of ionic metal complexes in MEKC is based on their charge and interaction with micelle.…”

On-capillary complexation of metal ions with 4-(2-thiazolylazo)resorcinol in capillary electrophoresis

“…A distinct feature of the separation of metal ions by CE is the frequent use of complexing ligands to form complexes that either manipulate separation selectivity or facilitate their detection. Many complexing ligands, such as 8-hydroxyquinoline-5-sulfonic acid (HQS) [1,2], 1,10-phenanthroline [3,4], 2-hydroxyisobutyric acid (HIBA) [5,6] and 4-(2-pyridylazo)resorcinol (PAR) [7,8] have been applied to CE separation.…”