METHOD OF DETERMINING QUALITATIVE COMPOSITION OF ORGANIC SUBSTANCES IN ENVIRONMENTAL OBJECTS

摘要

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