The isolation and identification of dyes in aqueous media by solid phase extraction-Fourier transform-Raman spectroscopy (SPERS)†

Abstract

The isolation of photographic dyes in aqueous solution by solid phase extraction (SPE) and identification by FT-Raman spectroscopy is reported. A series of dyes was studied using anion exchange (quaternary amine) and aminopropyl SPE cartridges and disks. Dye identification was possible by comparison of Raman spectra recorded from the SPE cartridges and disks, with a spectral library generated from the corporate reference materials. The determination of an unknown dye in an aqueous effluent stream is described as an application of the technique.

References

1. M. Zief and R. Kiser, in Solid Phase Extraction for Sample Preparation, J. T. Baker, Phillipsburg, PA, USA, 1988.
2. I. Liska, J. Krupcik and P. A. Leclerq, J. High Resolut. Chromatogr., 1989, 12, 577.
3. Handbook of Sorbent Extraction Technology, ed. K. C. Van Horne, Analytichem International, Harbor City, CA, USA, 1985.
4. J. Riu, I. Schonsee, D. Barcelo and C. Rafols, Trends Anal. Chem., 1997, 16, 405.
5. Fourier Transform Raman Spectroscopy—Instruments & Chemical Applications, ed. P. Hendra, Ellis Horwood, Chichester, UK, 1991.
6. B. L. Whittkamp and D. C. Tilotta, Anal. Chem., 1995, 67, 600.
7. K. J. Ewing, G. Nau, T. Bilodeau, D. M. Dagenais, F. Bucholtz and I. D. Aggarwal, Anal. Chim. Acta, 1997, 340, 227.