METHOD FOR SELECTIVE DETERMINATION OF HEAVY METAL IONS IN AQUEOUS MEDIA USING A LUMINESCENT MULTI-PROBE SYSTEM Russian patent published in 2019 - IPC G01N21/64 

FIELD: chemistry.

SUBSTANCE: invention relates to luminescence analysis of a substance and a method for selective determination of heavy metal ions in aqueous media by a luminescent multi-probe system. In implementing the method, a multi-probe system is formed and its response is calibrated to the effect of test ions of heavy metals in the solution. For this purpose, the test solution is mixed with a multi-probe system solution, the solution is exposed to a light source and fluorescence spectra of all probes of the system are recorded. Obtained data form a database. When analyzing the ionic composition of the unknown solution, low concentrations of the multi-probe system are added thereto, solution is exposed to a light source and fluorescence spectra of all probes of the system are recorded. Set of maximum values of fluorescence intensity of system probes is used as components of vector response of system for processing by pattern recognition methods. Obtained data are compared with data recorded in database.

EFFECT: high efficiency of detecting the type of ions of heavy metals and enabling determination of their concentration.

4 cl, 4 dwg