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:
-
- 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)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- 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}
}