ОТРИМАННЯ ТА ВЛАСТИВОСТІ КОБАЛЬТВМІСНИХ ІНГІБІТОРІВ НІТРИФІКАЦІЇ (Ukrainian)

PREPARATION AND PROPERTIES OF COBALT-CONTAINING NITRIFICATION INHIBITORS. (English)

Dicyandiamide (DCD) and 4-amino-1,2,4-triazole (ATC) are nitrification inhibitors (NIs) that are widely used in agriculture. There are practically no studies related to their combination as part of a complex with «biometal», which, in our opinion, will have greater effectiveness. The aim of this work is the synthesis of new cobalt-containing complex compounds, determination of their structure, composition and biological activity. Four substances were synthesized with different ratios of ligands (ATC and DCD). Their solubility in water, a KAS-28: water mixture, and commercial KAS-28 was established. A study of thermal behavior was carried out with the establishment of the most likely type of complex. Infrared spectroscopy proved 1,2-coordination of ATС via N1 and N2 atoms with a cobalt atom. The addition of DCD is carried out through the C≡N group. The content of Co(II) in substances is established. In laboratory conditions, the dynamics of changes in the number of NH4 + and NO3 - ions were investigated and the degree of nitrification inhibition was calculated. [ABSTRACT FROM AUTHOR]

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