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Simple cell for microscale capillary solution and supercritical fluid Raman spectroscopy
Author(s) -
Howdle Steven M.,
Best Stephen P.
Publication year - 1993
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250240710
Subject(s) - microscale chemistry , capillary action , supercritical fluid , raman spectroscopy , analytical chemistry (journal) , chemistry , materials science , chromatography , optics , composite material , organic chemistry , mathematics education , mathematics , physics
Abstract A microscale capillary Raman solution flow cell has been developed utilizing conventional high‐performance liquid chromatographic capillary tubing. This cell is suitable for both liquids and gases over a wide range of pressures. The introduction of a liquid flow along the capillary allows the collection of Raman spectra of intensely coloured and highly absorbing solutions, e.g. I 2 CCl 4 , using 514.5 nm excitation. The application of this cell to the examination of supercritical fluids is demonstrated. The use of small cross‐section capillary tubing ( ca 10 −5 cm 2 ) allows high linear flow‐rates to be maintained with comparatively small solution volumes.