METHOD FOR DETECTING AND DETERMINING CONCENTRATION OF NANO-OBJECTS IN COMPLEX SOLUTIONS Russian patent published in 2023 - IPC G01N27/06 B82Y40/00 

FIELD: analytical chemistry.

SUBSTANCE: invention relates to analytical chemistry and may be used in industry sector for monitoring nano-objects yield during production. Method for detection and determination of concentration of nanoobjects in complex solutions by the change in conductivity includes the following operations: placing a complex solution in the conductometric cell, passing a current from the power supply source through the solution, diluting the complex solution with distilled water while constantly monitoring the solution conductivity, plotting changes in conductivity over time when diluting the complex solution or using an oscillation amplifier in a circuit with a conductimeter cell, using a pre-tuned spectral-frequency response with a solution containing the nano-object for the auto-oscillation caused by the presence of the nano-object in the complex solution, then influencing the complex solution using the pre-tuned amplifier generator, detecting the presence of the target nano-object in the complex solution by the occurrence of resonant conductivity, the temperature of the complex solution in the conductometric cell is additionally measured, and the concentration of nano-objects is determined by the resonance maximum value on the graph of the conductivity value graduation dependence on temperature and number of nano-objects.

EFFECT: invention provides for high reliability and sensitivity when monitoring nano-objects in a complex solution.

1 cl, 4 dwg