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Title: Micro-column plasma emission liquid chromatograph. [Patent application]

Abstract

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.

Inventors:
Publication Date:
OSTI Identifier:
6264766
Application Number:
ON: DE83013174
Assignee:
ERA-08-036604; EDB-83-112505
DOE Contract Number:  
AC09-76SR00001
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; LIQUID COLUMN CHROMATOGRAPHY; SPECTROMETERS; PLASMA PRODUCTION; CAPILLARIES; ELECTRIC POTENTIAL; EMISSION SPECTROSCOPY; GLASS; VISIBLE RADIATION; BLOOD VESSELS; BODY; CARDIOVASCULAR SYSTEM; CHROMATOGRAPHY; ELECTROMAGNETIC RADIATION; MEASURING INSTRUMENTS; ORGANS; RADIATIONS; SEPARATION PROCESSES; SPECTROSCOPY; 400104* - Spectral Procedures- (-1987)

Citation Formats

Gay, D.D. Micro-column plasma emission liquid chromatograph. [Patent application]. United States: N. p., 1982. Web.
Gay, D.D. Micro-column plasma emission liquid chromatograph. [Patent application]. United States.
Gay, D.D. Thu . "Micro-column plasma emission liquid chromatograph. [Patent application]". United States.
@article{osti_6264766,
title = {Micro-column plasma emission liquid chromatograph. [Patent application]},
author = {Gay, D.D.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {8}
}