Demchenko N. Influence of quaternary salts of pyridinium and triazoloazepinium on development of corrosive microbial community of soil

The dissertation is devoted to the studying of influence of halogenides 4(4'- сhlorobenzyl)pyridinium and bromides [1,2,4]triazolo[4,3-a]azepinium on development of bacteria sulfidogenic natural community of soil which induce biocorrosion of metals. For the first time it is established that the components of corrosion microbic community of pherosphere, generated in sandy soil together with bacteria is the complex of microscopic fungi of group Anamorphic fungi. The most corrosion active in relation to steel of St3ps is Fusarium охysporum. The culture of sulfate-reducing bacteria - М-4.1 which for morphological, cultural and molecular-genetic characteristics is regarded to Desulfovibrio genus is allocated and identified as dominating in sulfidogenic community. For the first time high antimicrobic activity of quaternary salts - pyridinium and triazoloazepinium - as to the sulfate-reducing, iron-reducing, denitrifying and ammonifying bacteria is established. For the first time the dependence between antimicrobic action of quaternary salts pyridinium and triazoloazepinium and the value of an indicator of lipophilicity (lgP) is established. For the quaternary salts of triazoloazepinium the correlation between diameter of zones of oppression of growth of SRB and lgP is established (R2 = 0,84). The established interrelation between structure of molecules of quaternary salts triazoloazepinium and their antimicrobic and anticorrosive properties allows to expand theoretical representations for synthesis and search of inhibitors corrosion with biocide action, which can be used for creation of highly effective means of protection of metal constructions.