METHOD OF ANALYSING CHEMICAL COMPOSITION OF MATERIALS Russian patent published in 2015 - IPC G01N21/63 

FIELD: chemistry.

SUBSTANCE: invention relates to chemical analysis of substances. In method of analysis of chemical composition of substances, including laser evaporation or ablation of analysed samples, ionisation of products of laser evaporation or ablation of analysed samples and detection of obtained ions by mass-analyser, additionally introduced solid target is used for laser plasma generation by influencing it with laser radiation, ionisation of products of laser evaporation or sample ablation is performed with application of obtained laser plasma. Ionisation of products of laser evaporation or sample ablation is carried out in presence of additionally introduced gas-reagent, which is represented by chemical compounds, containing hydroxyl, or amino-, or sulphohydryl groups, and is realised by laser plasma radiation, quantum energy of which exceeds potential of ionisation of laser evaporation products of gas-reagent. Laser evaporation is realised by spatial scanning of the surface of analysed solid or liquid sample by laser beam, with placement of analysed sample with possibility of its movement relative to mass spectrometer and/or laser beam.

EFFECT: possibility of determining wide class of chemical compounds with high sensitivity in real time.

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