Apparatus for analyzing solid sample with supercritical fluid

Details Apparatus for analyzing solid sample with supercritical fluid Apparatus for analyzing solid sample with supercritical fluid

1984-11-29

1986-07-01

Kellogg, Arthur

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing liquid or solid sample

73 231, 7386481, 7386483, 422 89, G01N 122

Patent

active

045979430

ABSTRACT:
An apparatus for analyzing a sample with a supercritical fluid includes a fluid container containing as an extraction solvent a fluid obtained by compressing and liquefying a substance which is a gas at ambient temperature and atmospheric pressure. A pump is provided for drawing the fluid from its container through a suction line and delivering it through a delivery line, while the heads of the pump are cooled by a cooling device. An extraction mechanism is provided for bringing the fluid in a supercritical state into contact with the sample to be analyzed and extracting a specific component or components from the sample. A trapping mechanism is provided downstream of the extraction mechanism for collecting the extracted component or components from the fluid. An analyzing mechanism can be connected to the trapping mechanism by changeover valves for analyzing the collected component or components.

REFERENCES:
patent: 4155683 (1979-05-01), Mochizuki et al.
patent: 4300393 (1981-11-01), Stearns
patent: 4351802 (1982-09-01), Baylis et al.
Ito et al., "Head Space Gas Chromatographic Method . . . ", Nippon Shokuhin Kogyo Gakkaishi, vol. 30, No. 3, 1983, pp. 133-139.
Dennis R. Gere, "Supercritical Fluid Chromatography with Small Particle Diameter Packed Columns", Anal. Chem. 1982, 54, 736-740.
Rawdon et al., "Supercritical Fluid Chromatography as a Routine Analytical Technique", International Laboratory 1984, pp. 12-23.

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