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    Aqueous systems based on organophosphorous compounds in low concentrations: Interconnection of self-organization and biological properties

    Year: 2019

    Journal: Phosphorus Sulfur Silicon Relat. Elem., Volume 194, MAY 27, page 497–501

    Authors: Ryzhkina, I. S.; Murtazina, L. I.; Shevelev, M. D.; Akhmetzyanova, L. R.; Galkina, I. V.; Kuznetsova, T. V.; Knyazev, I. V.; Petrov, A. M.; Konovalov, A. I.

    Organizations: Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [16-03-00076]

    Country: Budapest, HUNGARY

    Keywords: Aqueous system; self-organization; physicochemical properties; low concentrations; toxicity; hydrocoles

    It has been shown for the first time that aqueous solutions of quaternary phosphonium salts (cetyltributylphosphonium bromide, cetyltriphenylphosphonium bromide) in the range of 1x10(-2)-1x10(-18)mol/L are disperse systems. The nature of the disperse phase changes as the solution is diluted, starting from micelles (1x10(-4)-1x10(-2)mol/L), translating into molecule-water domains (1x10(-6)-1x10(-4)mol/L) and nanoassociates (1x10(-18)-1x10(-6)mol/L). The effect that these compounds' solutions have on the growth and development of hydrobionts (infusoria Paramecium caudatum and single-celled algae Chlorella vulgaris) in the low concentrations range has been studied for the first time. It was found that at a concentration less than 1x10(-6)mol/L the nonmonotonic concentration dependences of the physicochemical properties and bioeffects of the systems are related to the formation and rearrangement of nanoassociates. [GRAPHICS] .
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