Dual liquid and gas chromatograph system

Patent · Tue Apr 09 04:00:00 EST 1985

OSTI ID:5335381

Gay, D D

A chromatographic system is claimed that utilizes one detection system for gas chromatographic and micro-liquid chromatographic determinations. The detection system is a direct-current, atmospheric-pressure, helium plasma emission spectrometer. The detector utilizes a nontransparent plasma source unit which contains the plasma region and two side-arms which receive effluents from the micro-liquid chromatograph and the gas chromatograph. The dual nature of this chromatographic system offers: extreme flexibility in the samples to be examined; extremely low sensitivity; element selectivity; long-term stability; direct correlation of data from the liquid and gas samples; simpler operation than with individual liquid and gas chromatographs, each with different detection systems; and cheaper than a commercial liquid chromatograph and a gas chromatograph.

• Assignee: Dept. of Energy
• Patent Number(s): US 4509855
• OSTI ID: 5335381
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
400104 -- Spectral Procedures-- (-1987)
440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
CHROMATOGRAPHY
CURRENTS
DESIGN
DIRECT CURRENT
ELECTRIC CURRENTS
EMISSION SPECTROSCOPY
GAS CHROMATOGRAPHY
LIQUID COLUMN CHROMATOGRAPHY
MEASURING INSTRUMENTS
PLASMA
SENSITIVITY
SEPARATION PROCESSES
SPECTROMETERS
SPECTROSCOPY