Capillary zone electrophoresis for the separation and characterization of humic acids

Adsorption of tetracycline onto goethite in the presence of metal cations and humic substances

“…53680) was also from Sigma-Aldrich and used as obtained. The characteristic of HA could be found in literatures [18,19]. All other chemicals, including iron, lithium, sodium, potassium, copper, calcium, and magnesium salts, were A.R.…”

Adsorption of tetracycline (TC) onto montmorillonite: Cations and humic acid effects

“…53680) were purchased from SigmaAldrich Co. (St. Louis, MO) and stored at − 20°C, and were used without further purification. The characteristic of HA could be found in literatures (Fetsch and Havel, 1998;Rigol et al, 1998). Acetonitrile (HPLC grade) and oxalic acid (99% purity) were also from Sigma-Aldrich.…”

Comparative study for separation of aquatic humic substances by capillary zone electrophoresis using uncoated, polymer coated and gel-filled capillaries

“…The capillary electrophoretic behaviours of humic matter (HM, a more general synonym for humic substances) and other NOM have been studied rather frequently using bare silica open tubular capillaries with numerous borate, acetate, phosphate, alanine, etc. (BGEs) at different acidities [4][5][6][7]. * Corresponding author.…”