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Chemical Papers

, Volume 62, Issue 3, pp 323–325 | Cite as

Packed column inlet as a direct injection capillary inlet

  • Rafał WawrzyniakEmail author
Short Communication

Abstract

Discrimination is a known problem when analyzing high-boiling compounds, which considerably hinders their analysis at trace levels. This problem can be solved by using either direct or on-column injection. Modification of a standard injection port liner and a micro-syringe is presented, so that a direct injection with in-column evaporation can be easily done. The proposed changes are compatible with any packed column injection port, simple to implement, and inexpensive. The changes are described and the analysis of acyloglycerols in diesel oil spiked with 50 % FAME is used to demonstrate the utility of the proposed injection technique.

Keywords

direct injection on-column injection sample injector modification capillary columns 

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References

  1. Chauhan, J., & Darbre, A. (1981). Direct injection on capillary columns for gas chromatography. Journal of High Resolution Chromatography, 4, 260–265. DOI: 10.1002/jhrc.1240040603.CrossRefGoogle Scholar
  2. Grob, K. (1978). On-column injection onto capillary columns. Part 2: Study of sampling conditions — a practical recommendation. Journal of High Resolution Chromatography, 1, 263–267. DOI: 10.1002/jhrc.1240010510.CrossRefGoogle Scholar
  3. Grob, K., & Grob, K., Jr. (1978). On-column injection on to glass capillary columns. Journal of Chromatography A, 151, 311–320. DOI: 10.1016/S0021-9673(00)88346-6.CrossRefGoogle Scholar
  4. Rood, D. (1999). A practical guide to the care, maintenance, and troubleshooting of capillary gas chromatographic systems. Weinheim: Wiley-VCH.Google Scholar
  5. Schomburg, G., Behlau, H., Dielmann, R., Weeke, F., & Hushman, H. (1977). Sampling techniques in capillary gas chromatography. Journal of Chromatography, 142, 87–102. DOI: 10.1016/S0021-9673(01)92028-X.CrossRefGoogle Scholar
  6. Supelco Bulletin 853B (1999). Capillary GC troubleshooting guide: How to locate problems and solve them (pp. 6–8). Retrieved from www.sigma-aldrich.comGoogle Scholar
  7. Watanabe, C., & Hashimoto, K. (1990). Direct injection of large sample volumes into capillary columns with packed column injector. Journal of High Resolution Chromatography, 13, 610–613. DOI: 10.1002/jhrc.1240130905.CrossRefGoogle Scholar
  8. Zlatkis, A., & Kaufman, H. R. (1959). Use of coated tubing as columns for gas chromatography. Nature, 184, 2010. DOI: 10.1038/1842010a0.CrossRefGoogle Scholar

Copyright information

© Versita 2008

Authors and Affiliations

  1. 1.Department of Analytical Chemistry, Faculty of ChemistryAdam Mickiewicz UniversityPoznańPoland

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