METHOD OF DETERMINATION OF NANO TRACE CONTAMINANTS Russian patent published in 2015 - IPC G01N33/483 

FIELD: measurement equipment.

SUBSTANCE: invention comprises a method of determination of nano trace contaminants, supposing the use of emulsion from liquid crystal drops, dispersed in water and capable to change a configuration of liquid crystal drops in presence in the emulsion composition of foreign admixtures, measurement of change of intensity of light scattered by the emulsion, according to which it is possible to evaluate the content and density of required admixtures differing by that for a liquid crystal the compounds capable to trans-cis-transition under the effect of actinic light are selected and before measurement of change of light intensity the emulsion is illuminated additionally by actinic light, thus ensuring change of configuration in liquid crystal drops due to trans-cis-transition in liquid crystal molecules.

EFFECT: increase of sensitivity of method of determination of nano-trace contaminants.