G. I. Korchak

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Conditions for obtaining stable silver nanoparticles smaller than 10 nm were developed using a binary stabilizer polyvinylpyrrolidone/sodium dodecylsulphate in optimal ratio. Optical spectra, morphology and dependence of size of the nanoparticles on the amount of reducing agent were studied. Colloidal solutions of nanosilver showed a high bactericidal(More)
The frequency of occurrence of bdellovibrios and intestinal bacteriophages at the sites of contamination in the sea and along the sea shore and at the points remote from the sources of contamination was studied. At the contaminated sites bdellovibrios were revealed in 73.3-100% and bacteriophage in 75-83.4% of the samples. There was found to be a moderate(More)
The authors have investigated the adsorption-elution of intestinal bacteriophages T2 and MS2 as a model of enteric viruses, by using the coagulants aluminum oxychloride (AOX78) and aluminum sulfate (AS). The investigation has ascertained the effective removal of the phages from water with AOX78 (98.7-100%) and the low efficiency of elution of coliphages(More)
The paper describes the main stages of development of sanitary bacteriological studies at the leading hygiene research institute of Ukraine--the A. N Marzeyev Institute for Hygiene and Medical Ecology. These researches have made a substantial contribution to the formation and development of hygiene science in the former Soviet Union. The current and(More)
These are presented drinking water regulations in Ukraine on microbiological indices in the new state document "Hygienic Drinking water regulations intended for human consumption" (State sanitary regulations and standards (GsanPiN) 2.2.4-171-10). There is reported an analysis of both the open waterbodies water quality and water for centralized water supply(More)