About Numerical Analyses of Sea Water with Laser Spectroscopy Method N.Kh. Gomidze 1 , K.A. Makharadze, M.R. Khajishvili, Z.Kh. Shashikadze 1 Rustaveli State University, Batumi, Georgia, Ninoshvili str. 35, 6010. gomidze@yahoo.com Abstract Nowadays, the spectral optic methods for discovering and studying mineral oils in the water are widely applied to and their principle advantage towards other methods is their express-diagnostics and remote sounding. The express- diagnostics implies the rapid discovery of water pollution using optic methods in order to eliminate and liquidate pollution sources on time (tankers, terminals etc). The difference is even between optic methods. One of them is the method of laser fluorescence. There are lots of organic compounds in the nature exposing special characteristics after optical excitation, they start radiating – fluorescence. These organic compounds are divided into four classes, they are: 1) photosynthetic substances - phytoplanktons; 2) amino acids; 3) humus substances of water; 4) oil and mineral oils. So, it’s doubtless that there are soluble organic fluorescent substances in water media. Their signal of fluorescence creates a background on the signal of oil fluorescence and hampers the progress of oil discoveries. The fluorescence spectrums are created simultaneously and they represent the spectrums of signals created from both, oil and organic compounds. There are different ways of separating these spectrums, but none of them is absolute. That is why, it is necessary to study and investigate the spectrums of fluorescence of organic compounds besides oil and mineral oils. It is comparatively simple to discover solid elements floating into the water and to define their concentration. 1. Introduction Carrying out the methods of controlling pollution of seas, oceans and inner waters with oil products is a very actual problem nowadays. The sea water is a very complicated object. During its diagnosis a great attention is paid to organic admixtures, which are of both, natural (phytoplankton, natural organic substance) and artificial origin (oil products, solution, pesticides, etc.). The research requires complex attitudes. The amount of research methods can be rather numerous. But among these methods the method of laser spectroscopy is most expressive and expressive [1-3]. Laser spectroscopy does not mean that only the bulb – the ordinary source of light has been changed by laser. It is quite new direction in spectroscopy. For instance, combinative scattering is rather weak effect, earlier several days and nights were required for getting its spectrum, but in case of laser one billionth of the second is quite enough. In comparison with other methods the numerical spectral analysis of oil products is expressive and its exactness significantly grows applying the method of “inner rapper” [4,5]. At this time we have to compare the radiated signal from the mixtures (in this case from oil products) with the radiated signal from environmental molecules. In case of fluorometry of organic mixtures in water, convenient inner rapper is the signal of combinative scattering in water, in particular, its Stokes component with replacement 3440 1 sm - . [6-8]. 2. Experimental part Here we discuss how to make a numerical analyses of sea water consistency applying the method of laser spectroscopy (fluorescence). Picture 1 shows the scheme of experimental machine, which enables us to make a numerical diagnostics of sea water on the consistency of oil and oil products. The scientific grant project “Ecological monitoring of Batumi sea port water area via the method of laser fluorescence and studying wave processes in real media” (GNST/ST08/5-451, manager full professor N. Gomidze) financed by Georgian National Scientific Fund (now Rustaveli Scientific Fund) made it possible to modernize the fluorometry, the scheme of which is represented on figure 1. 978-1-4244-6051-9/11/$26.00 ©2011 IEEE