High pressure optical cell for spectrometry

Optics: measuring and testing – Sample – specimen – or standard holder or support – Fluid containers

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250428, G01N 1502

Patent

active

059495367

ABSTRACT:
A high pressure optical cell for spectrometry is provided. The cell includes a monolithic crystal having a longitudinal bore within. The cell also includes a sheath/housing for holding monolithic crystal and sample introduction tubes. The sample introduction tubes can be microwelded. Compression ferrules or O-rings are used for sealing. A method for making the cell is also provided. A spectroscopic analyzer having a high-pressure optical cell is further provided.

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Whyman et al., A high-pressure spectroscopic cell for FTIR measurements, J. Phys. E: Sci. Instrum., vol. 17, Jul. 1984.
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Applied Spectroscopy, vol. 48, No. 8, 1994, pp. 1030-1032: "New Fiber-Optic-Based High-Pressure Cell for Fluorescence Measurements in Near- and Supercritical Solvents" by Jeanette K. Rice, Richard A. Dunbar, and Frank V. Bright.
Analytical Chemistry, vol. 66, No. 20, Oct. 15, 1994, pp. 3543-3551, "Simple Fiber-Optic Interface For On-Line Supercritical Fluid Extraction Fourier Transform Infrared Spectrometry" by D.L. Heglund and D.C. Tilotta, Dept. of Chem., Univ. of North Dakota, Grand Forks, ND; and S.B. Hawthorne and D. J. Miller, Energy & Enviromental Research Center, Univ. of North Dakota, Grank Forks, ND.
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