METHOD FOR ELEMENTAL ANALYSIS OF MEDIA AND APPARATUS REALISING SAID METHOD Russian patent published in 2013 - IPC G01N23/222 

FIELD: physics.

SUBSTANCE: fast neutron source is placed in a slowing unit; a γ-spectrometer employing a non-overload linear detection technique is used to detect instantaneous γ-quanta resulting from radiation capture of neutrons by nuclei of elements; calibration responses of separate elements making up the sample being identified are determined; apparatus spectra of γ-quanta are used to determine concentration of elements in the sample through weight coefficients of responses of elements, wherein chemical composition of the media is determined by: a priori determining the chemical composition - known chemical compounds - of the medium; determining calibration responses of compounds through the sum of calibration responses of elements making up the compounds; determining concentration of compounds and elements in the medium being identified; determining concentration of elements making up the compounds; establishing conformity of the obtained total concentration of elements of the medium, based on elements making up compounds of the medium being identified, concentration of elements of the medium obtained by identification decryption of only the elemental composition of the medium; in case of mismatch with a given error of the total concentration of elements of the medium, obtained by identification decryption based on elements making up the identified compounds of the medium, with concentration of elements of the medium, obtained by identification decryption of only the elemental composition of the medium, the procedure, starting from the a priori determining of the structure of compounds, is repeated.

EFFECT: faster elemental analysis, high resolution of identification of elements, high sensitivity of determining impurities in media.

3 cl, 13 dwg