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KLUČÁKOVÁ, M.
Originální název
Study of Humic Acids Fractionation
Typ
článek v časopise - ostatní, Jost
Jazyk
angličtina
Originální abstrakt
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.
Klíčová slova
humic acods, fractionation, solubility, organic solvents
Autoři
Rok RIV
2005
Vydáno
20. 9. 2005
Místo
Brno
ISSN
0009-2770
Periodikum
Chemické listy
Ročník
99
Číslo
S
Stát
Česká republika
Strany od
s542
Strany do
s544
Strany počet
3