The density-dependency of dark- and low-background radiation effects on water and water solution properties

Abstract

The effects of dark -(Ev = 0 lux) and low-background radiation (BGR), where R < 1μRongen/h, on physicochemical properties (specific electrical conductivity, heat fusion, hydrogen peroxide (H₂O₂), and oxygen contents) of distilled water (DW) and physiological solution (PS) at 4°C and 18°C were studied. The incubation of DW and PS samples in dark and in low BGR (under dark) medium at 4°C and 18°C brings to changes of their physicochemical properties compared with DW and PS samples incubated in light and normal BGR condition (Ev = 500–550 lux and R = 17 μRoentgen/h). The observed changes of DW and PS properties depended on their initial temperature, density and ionic composition. It is suggested that water molecules dissociation and ions hydration are sensitive to illumination and BGR. Therefore, the cell-bathing medium can be considered as a messenger through which direct and non direct (by modulating of others factors-induced effects) influences of illumination and BGR on cell metabolism are realized.

Keywords::

• Light
• background radiation
• water density
• electrical conductivity
• heat fusion
• hydrogen peroxide

Acknowledgement

This work was supported by Office of Naval Research Global, Research Grant Project No #1592P.

Declaration of interest

The authors report no conflicts of interest. The authors alone are responsible for the content of and writing of the article.