Process for analyzing CO[sub 2] in air and in water
Abstract
The process of this invention comprises providing a membrane for separating CO[sub 2] into a first CO[sub 2] sample phase and a second CO[sub 2] analyte phase. CO[sub 2] is then transported through the membrane thereby separating the CO[sub 2] with the membrane into a first CO[sub 2] sample phase and a second CO[sub 2] analyte liquid phase including an ionized, conductive, dissociated CO[sub 2] species. Next, the concentration of the ionized, conductive, dissociated CO[sub 2] species in the second CO[sub 2] analyte liquid phase is chemically amplified using a water-soluble chemical reagent which reversibly reacts with undissociated CO[sub 2] to produce conductivity changes therein corresponding to fluctuations in the partial pressure of CO[sub 2] in the first CO[sub 2] sample phase. Finally, the chemically amplified, ionized, conductive, dissociated CO[sub 2] species is introduced to a conductivity measuring instrument. Conductivity changes in the chemically amplified, ionized, conductive, dissociated CO[sub 2] species are detected using the conductivity measuring instrument. 43 figs.
- Inventors:
- Issue Date:
- Sponsoring Org.:
- USDOE; USDOE, Washington, DC (United States)
- OSTI Identifier:
- 6151749
- Patent Number(s):
- 5910448
- Application Number:
- PPN: US 8-826645
- Assignee:
- Umpqua Research Co., Myrtle Creek, OR (United States)
- DOE Contract Number:
- FG03-93ER81641
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 4 Apr 1997
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; AIR POLLUTION MONITORING; CARBON DIOXIDE; DISSOCIATION; IONIC CONDUCTIVITY; IONIZATION; MEASURING INSTRUMENTS; MEMBRANE TRANSPORT; WATER CHEMISTRY; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; CHEMISTRY; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; MONITORING; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; 540120* - Environment, Atmospheric- Chemicals Monitoring & Transport- (1990-); 540320 - Environment, Aquatic- Chemicals Monitoring & Transport- (1990-)
Citation Formats
Atwater, J E, Akse, J R, and DeHart, J. Process for analyzing CO[sub 2] in air and in water. United States: N. p., 1999.
Web.
Atwater, J E, Akse, J R, & DeHart, J. Process for analyzing CO[sub 2] in air and in water. United States.
Atwater, J E, Akse, J R, and DeHart, J. Tue .
"Process for analyzing CO[sub 2] in air and in water". United States.
@article{osti_6151749,
title = {Process for analyzing CO[sub 2] in air and in water},
author = {Atwater, J E and Akse, J R and DeHart, J},
abstractNote = {The process of this invention comprises providing a membrane for separating CO[sub 2] into a first CO[sub 2] sample phase and a second CO[sub 2] analyte phase. CO[sub 2] is then transported through the membrane thereby separating the CO[sub 2] with the membrane into a first CO[sub 2] sample phase and a second CO[sub 2] analyte liquid phase including an ionized, conductive, dissociated CO[sub 2] species. Next, the concentration of the ionized, conductive, dissociated CO[sub 2] species in the second CO[sub 2] analyte liquid phase is chemically amplified using a water-soluble chemical reagent which reversibly reacts with undissociated CO[sub 2] to produce conductivity changes therein corresponding to fluctuations in the partial pressure of CO[sub 2] in the first CO[sub 2] sample phase. Finally, the chemically amplified, ionized, conductive, dissociated CO[sub 2] species is introduced to a conductivity measuring instrument. Conductivity changes in the chemically amplified, ionized, conductive, dissociated CO[sub 2] species are detected using the conductivity measuring instrument. 43 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jun 08 00:00:00 EDT 1999},
month = {Tue Jun 08 00:00:00 EDT 1999}
}