Chemistry: analytical and immunological testing – Nitrogen containing – Oxides of nitrogen
Patent
1992-06-04
1993-09-28
Johnston, Jill A.
Chemistry: analytical and immunological testing
Nitrogen containing
Oxides of nitrogen
436 53, 436 68, 436106, 436122, 436178, 422 681, 422 82, 422 8204, 73 191, 7386481, 128632, 95 46, 96 6, G01N 3300, A61B 500
Patent
active
052486168
ABSTRACT:
A method and apparatus are set forth for enhancing the concentration of oxides of nitrogen in the preferred embodiment. A permeable membrane is formed into a tube placed in a container. A sample containing bound nitrogen in placed in a container in contact with the tube. A carrier gas is swept through the tube in contact with the wall of the tube. This enables hydrophobic gases such as oxides of nitrogen to migrate through the wall of the tube and they are swept into a detection system. If desired, they can be permitted to accumulate in the wall for an interval and the carrier gas can be switched from off to on to achieve peak concentration for delivery to a bound nitrogen analytical device. Other hydrophobic gases such as oxides of sulfur can likewise be identified by sulfur analyzer. This enables an increase in trace concentration.
REFERENCES:
patent: 3572994 (1968-02-01), Hochstrasser
patent: 3983864 (1976-10-01), Sielaff et al.
patent: 4016864 (1977-04-01), Sielaff et al.
patent: 4187856 (1980-02-01), Hall et al.
patent: 4516580 (1985-05-01), Polanyi
Beckman Joseph S.
Conger Karl A.
Johnston Jill A.
Redding David
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