The analysis of spirits with a single stationary phase is still an unsolved problem; the two amyl alcohols, ethyl acetate and acetal are not separated on a polar column, methanol and acetaldehyde coelute from an apolar column. Trials with coupled columns of different polarities showed that optimum results were obtained with a 40 m capillary column, comprising 6 m of Carbowax 20 M, 12 m of 1:1 Carbowax 20M:OV1 mixture and 30 m of PS 264. Best results were achieved when a 1 m retention gap was used, injecting a small amount of sample and using a 7 cm syringe needle. © 1995 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH.
Determination of volatiles in spirits using combined stationary phases in capillary GC / Antonelli, A.; Galli, M.. - In: CHROMATOGRAPHIA. - ISSN 0009-5893. - 41:5-6(1995), pp. 722-725. [10.1007/BF02688114]
Determination of volatiles in spirits using combined stationary phases in capillary GC
Antonelli A.;
1995
Abstract
The analysis of spirits with a single stationary phase is still an unsolved problem; the two amyl alcohols, ethyl acetate and acetal are not separated on a polar column, methanol and acetaldehyde coelute from an apolar column. Trials with coupled columns of different polarities showed that optimum results were obtained with a 40 m capillary column, comprising 6 m of Carbowax 20 M, 12 m of 1:1 Carbowax 20M:OV1 mixture and 30 m of PS 264. Best results were achieved when a 1 m retention gap was used, injecting a small amount of sample and using a 7 cm syringe needle. © 1995 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH.
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