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Title: 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 » end. A sweep flow tube is mounted in the fifth leg so as to supply a helium sweep flow to the juncture.« less

Inventors:
 [1]
  1. (Grand Forks, ND)
Publication Date:
Research Org.:
University of North Dakota
OSTI Identifier:
867689
Patent Number(s):
US 4988870
Assignee:
Und-Sem Foundation (Grand Forks, ND) NETL
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 = {1991},
month = {1}
}

Patent:

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