Open-split interface for mass spectrometers
Abstract
An open-split interface includes a connector body having four leg members projecting therefrom within a single plane, the first and third legs being coaxial and the second and fourth legs being coaxial. A tubular aperture extends through the first and third legs and a second tubular aperture extends through the second and fourth legs, connecting at a juncture within the center of the connector body. A fifth leg projects from the connector body and has a third tubular aperture extending therethrough to the juncture of the first and second tubular apertures. A capillary column extends from a gas chromatograph into the third leg with its end adjacent the juncture. A flow restrictor tube extends from a mass spectrometer through the first tubular aperture in the first and third legs and into the capillary columnm end, so as to project beyond the end of the third leg within the capillary column. An annular gap between the tube and column allows excess effluent to pass to the juncture. A pair of short capillary columns extend from separate detectors into the second tubular aperture in the second and fourth legs, and are oriented with their ends spaced slightly from the first capillary columnmore »
- Inventors:
-
- Grand Forks, ND
- Issue Date:
- Research Org.:
- Univ. of North Dakota, Grand Forks, ND (United States)
- OSTI Identifier:
- 867689
- Patent Number(s):
- 4988870
- Assignee:
- Und-Sem Foundation (Grand Forks, ND)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- FC21-86MC10637
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- open-split; interface; mass; spectrometers; connector; leg; projecting; therefrom; single; plane; third; legs; coaxial; fourth; tubular; aperture; extends; connecting; juncture; center; fifth; projects; extending; therethrough; apertures; capillary; column; gas; chromatograph; adjacent; flow; restrictor; tube; spectrometer; columnm; annular; gap; allows; excess; effluent; pass; pair; columns; extend; separate; detectors; oriented; spaced; slightly; sweep; mounted; supply; helium; flow tube; capillary column; mass spectrometers; extending therethrough; mass spectrometer; gas chromatograph; third leg; aperture extends; annular gap; single plane; tube extends; fourth legs; open-split interface; split interface; /250/73/
Citation Formats
Diehl, John W. Open-split interface for mass spectrometers. United States: N. p., 1991.
Web.
Diehl, John W. Open-split interface for mass spectrometers. United States.
Diehl, John W. Tue .
"Open-split interface for mass spectrometers". United States. https://www.osti.gov/servlets/purl/867689.
@article{osti_867689,
title = {Open-split interface for mass spectrometers},
author = {Diehl, John W},
abstractNote = {An open-split interface includes a connector body having four leg members projecting therefrom within a single plane, the first and third legs being coaxial and the second and fourth legs being coaxial. A tubular aperture extends through the first and third legs and a second tubular aperture extends through the second and fourth legs, connecting at a juncture within the center of the connector body. A fifth leg projects from the connector body and has a third tubular aperture extending therethrough to the juncture of the first and second tubular apertures. A capillary column extends from a gas chromatograph into the third leg with its end adjacent the juncture. A flow restrictor tube extends from a mass spectrometer through the first tubular aperture in the first and third legs and into the capillary columnm end, so as to project beyond the end of the third leg within the capillary column. An annular gap between the tube and column allows excess effluent to pass to the juncture. A pair of short capillary columns extend from separate detectors into the second tubular aperture in the second and fourth legs, and are oriented with their ends spaced slightly from the first capillary column end. A sweep flow tube is mounted in the fifth leg so as to supply a helium sweep flow to the juncture.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1991},
month = {Tue Jan 01 00:00:00 EST 1991}
}