Determination of volatiles in spirits using combined stationary phases in capillary GC
- 27 Downloads
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.
Key WordsGas chromatography Mixed stationary phases Distilled beverages Direct analysis
Unable to display preview. Download preview PDF.
- K. MacNamara, HRC&CC7, 641 (1984).Google Scholar
- M. Masuda, M. Yamamoto, Y. Asakura, J. Food Sci.50, 264 (1985).Google Scholar
- K. Grob Jr., H. P. Neukom, H. Kaderli, HRCCC1, 57 (1978).Google Scholar
- J. De Zeeuw, R. C. M. De Nijs, J. C. Buyten, J. C. Peene, 8th ISCC 171 (1987).Google Scholar
- J. De Zeeuw, R. C. M. De Nijs, J. C. Buyten, J. C. Peene, M. Mohnke, Intern. Lab.17 (10), 52 (1987).Google Scholar
- A. Antonelli, A. Amati, Vignevini14 (7/8), 35 (1987).Google Scholar
- D. F. Ingraham, C. F. Shoemaker, W. Jennings, J. Chromatogr.239, 39 (1982).Google Scholar
- K. Grob, “On-column injection in capillary gas chromatography” Hüethig Verlag, Heidelberg, 1987, p. 441.Google Scholar
- EC Regulation nr. 1576/89, Luxembourg, 29.5.1989.Google Scholar