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Title: Micro-column plasma emission liquid chromatograph

Abstract

In a direct current plasma emission spectrometer for use in combination with a micro-column liquid chromatograph, an improved plasma source unit. 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:
 [1]
  1. (Aiken, SC)
Issue Date:
Research Org.:
E I DUPONT DE NEMOURS & CO INC
OSTI Identifier:
865153
Patent Number(s):
4470699
Assignee:
United States of America as represented by United States (Washington, DC) SRS
DOE Contract Number:  
AC09-76SR00001
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
micro-column; plasma; emission; liquid; chromatograph; direct; current; spectrometer; combination; improved; source; unit; quartz; capillary; tube; inlet; means; outlet; gas; pair; spaced; electrodes; defining; region; connected; adapted; receive; eluant; stream; plasma-forming; wall; penetrating; soft; glass; light; pipe; disposed; transmit; passing; electromotive; force; sufficient; initiate; sustain; plasma region; spaced electrodes; liquid chromatograph; plasma emission; forming gas; capillary tube; plasma source; direct current; light pipe; inlet means; light passing; source unit; electrodes sufficient; transmit light; emission spectrometer; glass capillary; improved plasma; electromotive force; motive force; plasma-forming gas; current plasma; /356/

Citation Formats

Gay, Don D. Micro-column plasma emission liquid chromatograph. United States: N. p., 1984. Web.
Gay, Don D. Micro-column plasma emission liquid chromatograph. United States.
Gay, Don D. Sun . "Micro-column plasma emission liquid chromatograph". United States. https://www.osti.gov/servlets/purl/865153.
@article{osti_865153,
title = {Micro-column plasma emission liquid chromatograph},
author = {Gay, Don D.},
abstractNote = {In a direct current plasma emission spectrometer for use in combination with a micro-column liquid chromatograph, an improved plasma source unit. 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 = {1984},
month = {1}
}

Patent:

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