Micro-column plasma emission liquid chromatograph. [Patent application]
In a direct current plasma emission spectrometer for use in combination with a microcolumn liquid chromatograph, an improved plasma source unit is claimed. The plasma source unit includes a quartz capillary tube having an inlet means, outlet off gas means and a pair of spaced electrodes defining a plasma region in the tube. The inlet means is connected to and adapted to receive eluant of the liquid chromatograph along with a stream of plasma-forming gas. There is an opening through the wall of the capillary tube penetrating into the plasma region. A soft glass capillary light pipe is disposed at the opening, is connected to the spectrometer, and is adapted to transmit light passing from the plasma region to the spectrometer. There is also a source of electromotive force connected to the electrodes sufficient to initiate and sustain a plasma in the plasma region of the tube.
- DOE Contract Number:
- AC09-76SR00001
- Assignee:
- ERA-08-036604; EDB-83-112505
- Patent Number(s):
- None
- Application Number:
- ON: DE83013174
- OSTI ID:
- 6264766
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400104* -- Spectral Procedures-- (-1987)
BLOOD VESSELS
BODY
CAPILLARIES
CARDIOVASCULAR SYSTEM
CHROMATOGRAPHY
ELECTRIC POTENTIAL
ELECTROMAGNETIC RADIATION
EMISSION SPECTROSCOPY
GLASS
LIQUID COLUMN CHROMATOGRAPHY
MEASURING INSTRUMENTS
ORGANS
PLASMA PRODUCTION
RADIATIONS
SEPARATION PROCESSES
SPECTROMETERS
SPECTROSCOPY
VISIBLE RADIATION