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Title: 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):
5,643,799
Application Number:
PAN: 8-332,570
Assignee:
Umpqua Research Co., Myrtle Creek, OR (United States) PTO; SCA: 400105; PA: EDB-97:112499; SN: 97001827920
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}
}