FIELD: analytical methods.
SUBSTANCE: when performing environmental and sanitary chemical investigations, organic substances in air-dry sample of a material are twice extracted with dichloromethane on sodium sulfate in glass column. Extracted substances are separated chromatographically in thin silica gel layer using hexane/carbon tetrachloride/ ethyl acetate mixture as eluent. Organic substances are then determined by comparing parameter characterizing position of chromatographic zone of substance, Rf, for fractions obtained by extraction with Rf for substances identified by chromato-mass-spectrometric technique.
EFFECT: increased information value of analyses.
4 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR EXTRACTION OF POLY-AROMATIC CARBONS WITH ORGANIC AND ORGANIC-MINERAL MATRIX | 2005 |
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RU2281480C1 |
| METHOD OF SYNTHESIS OF NITROGEN-CONTAINING HETEROCYCLIC COMPOUNDS OR THEIR PHARMACEUTICALLY ACCEPTABLE SALTS | 1990 |
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| DERIVATIVES OF BENZAZEPINE AND BENZOTHIAZEPINE | 1989 |
|
RU2090562C1 |
| METHOD OF DETERMINATION OF PATULIN IN FOOD-STUFF | 0 |
|
SU1103146A1 |
| DERIVATIVES OF HETEROCYCLE-SUBSTITUTED PHENYLCYCLOHEXANECARBOXYLIC ACID, MIXTURE OR THEIR ISOMERS OR INDIVIDUAL ISOMERS AND THEIR SALTS | 1994 |
|
RU2119480C1 |
| SULFUR-SUBSTITUTED MEVINIC ACID DERIVATIVES AND PROCESS FOR PREPARING THEREOF | 1991 |
|
RU2041205C1 |
| HETEROCYCLIC NITROGEN-CONTAINING DERIVATIVES OF CARBOXYLIC ACID, METHOD OF THEIR SYNTHESIS, PHARMACEUTICAL COMPOSITION | 1993 |
|
RU2124503C1 |
| METHOD OF DETERMINING AROMATIC HYDROCARBONS IN UNDERGROUND WATERS AT HYDROCARBON PROSPECTING | 0 |
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SU1695249A1 |
| BENZOAKANIC ACID DERIVATIVES AND PHARMACEUTICAL COMPOSITION | 1993 |
|
RU2110512C1 |
| METHOD FOR SEPARATE DETERMINATION OF O-CHLOROPHENOL AND 2,6- DICHLOROPHENOL | 1999 |
|
RU2151391C1 |
