Discrete spacers for photometric characterization of humic acids separated by capillary isotachophoresis
Discrete spacers for photometric characterization of humic acids separated by capillary isotachophoresis
Nagyová, I.; Kaniansky, D.
Journal of Chromatography A 916(1-2): 191-200
2001
ISSN/ISBN: 0021-9673
PMID: 11382291
DOI: 10.1016/s0021-9673(00)01095-5
A group of twenty discrete spacers suitable for photometric characterization of humic acids (HAs) after their isotachophoretic (ITP) separation at pH 10 was found. The spacers, inorganic and organic acids and amino acids of suitable acid-base and migration properties exhibiting no light absorption in the UV region of the light spectrum, made possible to perform this characterization in a sensitive spike mode of the ITP analysis.