Calcium and barium humates: synthesis, physical and chemical properties

Calcium and barium peloids humates are received, and quantitative content of metals in them is defined. High-quality interpretation of strips of humates IR-spectrums of metals allowed to reveal the main functional groups of compounds and evidential carry the most intensive strips. Direct proportionality of maximums intensity in the field of 1720-1615 cm -1 from amount of metal in humate structure is revealed. Nature of interaction of metal ions with functional groups of humic acids is established. First of all ions of metals interact with carboxyl groups. After their full interlinking there is an interaction of metal ions with hydroxyl groups of humic acids.