GAS-CHROMATOGRAPHIC ANALYSIS OF ORGANIC-SOLVENT MIXTURES ON CAPILLARYCOLUMNS OF DIFFERENT POLARITY

A gas chromatographic method for the analysis of organic solvents in c hemical products is described. The analysis is performed by the use of a polar column, Supelcowax 10, and a non-polar column CP-Sil-5CB. Sam ples containing a non-volatile matrix or water were analysed by headsp ace analysis. The identification of the solvents in a sample, based on GC retention times on one column, is confirmed by GC of the sample on the second column. The method has been found to be suitable for the r outine analysis of solvent mixtures.