NON-VOLATILE COMPOUNDS CONTENT IN NON-AQUEOUS MEDIA DETERMINING METHOD Russian patent published in 2019 - IPC G01N5/04 

FIELD: chemistry.

SUBSTANCE: invention relates to the analytical chemistry and is intended for the non-volatile compounds content in volatile organic solvents, solutions, volatile compounds based extracts mass rapid determination. Non-volatile compounds content in non-aqueous media determining method consists is use of piezoquartz resonators as the scales, the analyzed sample microvolume application to the microvolume resonators electrodes, drying the sample and the nonvolatile sediment mass determining from the difference in the resonator oscillations frequency before application and after the sample drying, at that, according to the invention, a contour of polyvinyl acetate glue 1–2 mm thick is made on the quartz plate around the electrode, without covering the electrode, drying the contour and determining the piezoquartz resonator oscillation frequency before the analyzed sample application to the electrodes.

EFFECT: according to the invention the method allows to reduce the analysis time to 30 minutes; to increase the analysis performance – 4 samples / hour; reduce the sample volume for analysis to 1 mcl; increase the measuring elements durability – 1 sensor at least 10 measurements; significantly reduce the non-volatile compounds measuring instruments size.

1 cl, 2 dwg, 2 ex