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KLUČÁKOVÁ, M.
Original Title
Study of Humic Acids Fractionation
Type
journal article - other
Language
English
Original Abstract
Humic acids (HA) are natural compounds which cannot be characterized by chemical formula. They are not chemical individual but a heterogenous mixture of various organic compounds. HA are traditionally defined according to their solubility in alkaline solutions. In previous work it was confirmed that it is possible to subdivide HA into their fraction by dissolving in buffer solution with various pH. In this contribution some organic solvents were used for HA fractionation. In view of HA unique structure various polar and non-polar solvents were chosen for this study. Obtained fractions were characterized by several analytical methods. Composition and structure of individual fractions are compared and discussed.
Keywords
humic acods, fractionation, solubility, organic solvents
Authors
RIV year
2005
Released
20. 9. 2005
Location
Brno
ISBN
0009-2770
Periodical
Chemické listy
Year of study
99
Number
S
State
Czech Republic
Pages from
s542
Pages to
s544
Pages count
3