SIMULTANEOUS QUANTITATIVE DETERMINATION OF GLYCERINE AND POTASSIUM ACETATE IN AQUEOUS SOLUTION BY ¹H NMR SPECTROSCOPY

摘要

FIELD: measurement technology.;SUBSTANCE: use: for simultaneous quantitative determination of glycerol and potassium acetate in aqueous solution by ¹H NMR. Summary of invention consists in fact that 12-fold dilution of the analysed solution, obtaining the spectrum with the following parameters: response time is 5 sec; length of radio-frequency pulse is 3.3 mcsec (10 deg); relaxation delay is 10 s; amount of accumulations – 16, then in spectrum ¹H NMR determine integral intensity of signals, after which by obtained values of integrals in ranges of chemical shifts of 1.8–2.0; 3.4–3.8 and 4.6–4.9 p.w. Molar and weight percentages of each component are calculated.;EFFECT: high accuracy of quantitative determination of glycerol and potassium acetate in aqueous solution, as well as reduced number of analysed samples and shorter analysis time.;1 cl, 4 dwg, 1 tbl