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Application of Fourier Transform Infrared Spectroscopy to the Identification of Trace Organics in Water

1978; Taylor & Francis; Volume: 5; Issue: 2 Linguagem: Inglês

10.1080/03067317808071136

1029-0397

Maria M. Gomez-Taylor, Donald Kuehl, Peter R. Griffiths,

Water Quality Monitoring and Analysis

Abstract The application of dual-beam Fourier transform infrared spectroscopy to the on-line identification of organic water pollutants separated by gas chromatography and high performance liquid chromatography is described. The materials are concentrated using neutral polystyrene resins, eluted with diethyl ether, and chromatographed. For GC-IR measurements, readily identifiable spectra from compounds originally present at a level of 2 ppb may be obtained, and if procedures are optimized an increase in sensitivity of at least an order of magnitude is predicted. HPLC-IR measurements using conventional flow-through cells are less sensitive, and a procedure for solvent elimination is suggested which will yield submicrogram detection limits.