Capillary zone electrophoresis study of aggregation of humic substances

The process of humic acids (HAs) component agglomeration (oligomerization) can be followed by capillary zone electrophoresis (CZE). Oligomerization of HAs of different origin was found to be strong, it leads to kinetically robust entities which can be separated by CZE and their formation is one of t...

Full description

Saved in:
Bibliographic Details
Published in:Journal of Chromatography A 1998-08, Vol.817 (1), p.313-323
Main Authors: Fetsch, D., Hradilová, M., Peña Méndez, E.M., Havel, J.
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Biological and medical sciences
Chemical, physicochemical, biochemical and biological properties
Fundamental and applied biological sciences. Psychology
Humic acids
Organic matter
Physics, chemistry, biochemistry and biology of agricultural and forest soils
Soil science
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The process of humic acids (HAs) component agglomeration (oligomerization) can be followed by capillary zone electrophoresis (CZE). Oligomerization of HAs of different origin was found to be strong, it leads to kinetically robust entities which can be separated by CZE and their formation is one of the reasons for unsuccessful separation by previous authors. Another difficulty comes from the sorption of some of the HA fractions on the fused-silica capillary wall. Critical concentration for the formation of aggregates was found to be mainly around 30 mg/l. Results of CZE were confirmed by vapour pressure osmometry.
ISSN:0021-9673
DOI:10.1016/S0021-9673(98)00369-0