METHOD OF DETECTION AND IDENTIFYING OF CHEMICAL SUBSTANCES IN THE MIXTURE BY THEIR CHARACTERISTICS Russian patent published in 2012 - IPC G01N30/02 

FIELD: analytic chemistry.

SUBSTANCE: invention relates to analytical chemistry and can be used to detect and identify chemical substances in the mixture by their characteristics. Method of detection and identification of components of chemical mixtures by their characteristics include a preliminary identification of indicators traits components to detect and identify these indicators and depending on the operating parameters in the whole range of changes in these parameters. Also method includes measuring of the operating parameters and preliminary identification of indicators of response variations in calibration of measuring devices in the whole range of possible changes in operating parameters. In addition the method includes defining critical limits values of the intensity variations in the subsets of values or ranges of characters in the absence of any of the parts. Then selects a subset of values or characteristic ranges of any of the intensity distribution in excess of the modulus of the critical border of intensity data subsets or ranges of values of attributes. Next, determine the center group parameters and the variation of the intensity distribution observed in selected subsets of values or ranges characteristics. Then the component identification is performed by comparing the values of clustering center of the intensity distributions and values of characteristics in the measured values of operating parameters and values variation of the intensity distributions and values of variations at an incorrect response that measured in operating parameters. In this first in the whole range of possible changes of operating parameters and intensities of the parameter definition of line segments approximating the contour or contour segments gauge responses measuring device. Then determine the relationship between the parameters of these segments and the type of gauge responses contour, and before identification determine sites selected subsets of values or ranges characteristics that can be approximated by line segments with a given deviation. From the values of the parameters of these segments separate the contours of the mixture components are successively subtracted from the subsets of values or ranges of characteristics.

EFFECT: improving the reliability of detection and identification of mixture components.

15 cl, 7 dwg