Process for analyzing CO{sub 2} in seawater
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:
- Research Org.:
- Umpqua Research Co
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 512410
- Patent Number(s):
- 5643799
- Application Number:
- PAN: 8-332,570
- Assignee:
- Umpqua Research Co., Myrtle Creek, OR (United States)
- DOE Contract Number:
- FG03-93ER81641
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 1 Jul 1997
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 40 CHEMISTRY; CARBON DIOXIDE; QUANTITATIVE CHEMICAL ANALYSIS; SEAWATER; MEMBRANE TRANSPORT; MEMBRANES; IONIC CONDUCTIVITY
Citation Formats
Atwater, J E, Akse, J R, and DeHart, J. Process for analyzing CO{sub 2} in seawater. United States: N. p., 1997.
Web.
Atwater, J E, Akse, J R, & DeHart, J. Process for analyzing CO{sub 2} in seawater. United States.
Atwater, J E, Akse, J R, and DeHart, J. Tue .
"Process for analyzing CO{sub 2} in seawater". United States.
@article{osti_512410,
title = {Process for analyzing CO{sub 2} in seawater},
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 = {1997},
month = {7}
}