Open AccessComparison of some chemical and physico-chemical properties of natural and model sodium humates and of the biological activity of both substances in tomato water cultures
Author(s) -
S. Gumiński,
Danuta Augustyn,
J. Sulej
Publication year - 2015
Publication title -
acta societatis botanicorum poloniae
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 29
eISSN - 2083-9480
pISSN - 0001-6977
DOI - 10.5586/asbp.1977.034
Subject(s) - chemistry , sephadex , size exclusion chromatography , acetone , chromatography , filtration (mathematics) , particle size , compost , sodium , organic chemistry , biology , ecology , statistics , mathematics , enzyme
Natural humate from compost and the model sunstance obtained from p-benzoquinone were dissolved in an acetone-water mixture and subjected to chromatography on a column of aluminium oxide. Similar fractions were obtained which were chemically and spectrophotometrically investigated for the content of functional groups. The particle size of these substances was determined by filtration on Sephadex molecular sieves. Experiments were performed with tomato in water cultures on stagnant nutrient solution. The biological activity of the corresponding fractions of natural and model humates was found to be analogous. The results are discussed and confronted with functional groups content and particle size of the respective substances