METHOD FOR THE EMISSION ANALYSIS OF THE ELEMENTAL COMPOSITION OF LIQUID MEDIA

The proposed method is related to the field of technical physics, in particular, to spectral methods for determining the elemental composition of liquid media using an electric discharge in the liquid as a source of spectra. The method can be implemented in devices for determining elemental composition of liquid media. The areas of application include water treatment systems at public water supply facilities, nuclear and thermal power industries, chemical industry, food industry processes (for water quality control), environment monitoring, etc. The technical result of the invention is a higher stability and reproducibility of measurement results and a better long-term operation reliability of the device. The proposed method for emission analysis of elemental composition of liquid media includes initiation of a local electric discharge in the liquid under analysis with the formation of a current-carrying channel in the volume of a diaphragm opening made in a member of the electrolytic cell structure, and detection of the generated emission spectra of the chemical elements being determined. The result is obtained due to the fact that the elements being determined are first deposited in the current-conducting channel volume at a current insufficient for initiating a local electric discharge, then the current direction is changed and its magnitude is increased for initiating a local electric discharge, and the emission generated in the liquid being analyzed is detected as emission spectra of the elements being determined. The deposition current intensity can be selected according to elements to be determined and their concentration in the liquid.