FIELD: physicochemical methods.
SUBSTANCE: invention is designed for use in analytical chemistry, pharmacology, and other areas and consists in the following. To the sample containing target organic substances, an organic solvent is added, after which sample is frozen. As freezing advances, organic solvent together with extracted organic substances is separated into discrete liquid phase. Extract phase is separated when aqueous part of the sample is still in frozen state.
EFFECT: avoided use of intricate equipment and multiple stages, and reduced power expenses.
4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF EXTRACTING ORGANIC SUBSTANCES FROM AQUEOUS MEDIA BY EXTRACTION FREEZING IN CENTRIFUGAL FORCE FIELD | 2014 |
|
RU2564999C1 |
| METHOD OF DETECTING MONOBASIC CARBOXYLIC ACIDS C-C IN WATER | 2008 |
|
RU2364864C1 |
| METHOD OF EXTRACTION OF THE VOLATILE SUBSTANCES FROM THE WATER MEDIUM | 2005 |
|
RU2296716C2 |
| METHOD FOR QUANTITATIVE DETECTION OF FORMALDEHYDE, ACETALDEHYDE, PROPIONIC AND OILY ALDEHYDES IN URINE DUE TO LIQUID CHROMATOGRAPHY | 2001 |
|
RU2189596C1 |
| ANALYSIS COMPLEX FOR DETERMINING ALCOHOLS IN BIOLOGICAL FLUIDS | 1993 |
|
RU2110795C1 |
| METHOD OF QUANTITATIVE EVALUATION OF BLOOD ACETIC, PROPIONIC, ISOBUTYRIC, BUTYRIC, VALERIC, ISOCAPRONIC AND CAPRONIC ACIDS BY GAS CHROMATOGRAPHY ANALYSIS | 2010 |
|
RU2422830C1 |
| METHOD FOR DETERMINATION OF MASS CONCENTRATIONS OF PHENOL AND PYROCATECHOL IN BLOOD BY HIGH PERFORMANCE LIQUID CHROMATOGRAPHY | 2022 |
|
RU2786509C1 |
| METHOD OF QUANTITATIVE ANALYSIS OF URINE DIMETHYL TEREPHTHALATE BY LIQUID CHROMATOGRAPHY | 2010 |
|
RU2425380C1 |
| METHOD FOR QUALITATIVE AND QUANTITATIVE COLORIMETRIC DETERMINATION OF FORMALDEHYDE IN MILK | 2022 |
|
RU2795470C1 |
| METHOD FOR MICRODETERMINATION OF CLOSANTEL IN PLASMA, MILK, TISSUES | 2007 |
|
RU2366950C2 |
