Unusual luminescent properties of water: the major component of biological fluids

Valentin I. Lobyshev; Rogneda E. Shihlinskaya

doi:10.1117/12.273615

2 May 1997 Unusual luminescent properties of water: the major component of biological fluids

Valentin I. Lobyshev, Rogneda E. Shihlinskaya

Proceedings Volume 2982, Optical Diagnostics of Biological Fluids and Advanced Techniques in Analytical Cytology; (1997) https://doi.org/10.1117/12.273615
Event: BiOS '97, Part of Photonics West, 1997, San Jose, CA, United States

Abstract

It was found that distilled water possesses weak luminescence in the near UV and visible regions of the spectrum. The excitation spectrum is complex and has two main maxima, at 270 and 310 nm. The corresponding emission spectra apart from a narrow lines due to Raman scattering are represented by wide lines at 360 and 410 nm and are determined by the inherent properties of water. The intensity of luminescence depends on the time of holding of a sample in a closed vessel and the addition of a small amount of both luminescent and non-luminescent dipeptides. The observed phenomena can not be reduced to the luminescence of admixtures in water, but is a result of unique properties of water, its structure and polymorphism. The effect of water 'hardening' occurring upon rapid cooling of a hot sample to a room temperature, in contrast to slow cooling, is discovered. It is attributed to the formation of a new steady state of an aqueous structure, indicating by very intensive luminescence band at 5450 nm. Relative intensities of the described bands of emission are greatly sensitive to weak fields of electromagnetic nature. The phenomena observed lead to the conclusion that water and aqueous solutions should be regarded as a continuous polymorphous containing defects structures which are in general non-equilibrium self-organizing systems.

Citation Download Citation

Valentin I. Lobyshev and Rogneda E. Shihlinskaya "Unusual luminescent properties of water: the major component of biological fluids", Proc. SPIE 2982, Optical Diagnostics of Biological Fluids and Advanced Techniques in Analytical Cytology, (2 May 1997); https://doi.org/10.1117/12.273615

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