Determination of bicarbonate by ion-exclusion chromatography with ion-exchange enhancement of conductivity detection

Journal Article · Sat Feb 28 23:00:00 EST 1987 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00132a006· OSTI ID:6881687

Tanaka, K; Fritz, J S

Carbon dioxide and bicarbonate are determined in aqueous samples by ion-exclusion chromatography using water as the eluent and a conductivity detector. The sensitivity of detection is improved approximately 10-fold by the use of two ion-exchange enhancement columns inserted in series between the separating column and the detector. The first enhancement column converts carbonic acid to potassium bicarbonate and the second enhancement column converts the potassium bicarbonate to potassium hydroxide. The method provides a fast, selective, and sensitive way to determine carbon dioxide or bicarbonate. Application to several types of aqueous samples is demonstrated.

• Research Organization: Iowa State Univ., Ames
• OSTI ID: 6881687
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 59:5; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
400105 -- Separation Procedures
ACID CARBONATES
AQUEOUS SOLUTIONS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHROMATOGRAPHY
DATA
DISPERSIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EXPERIMENTAL DATA
INFORMATION
ION EXCHANGE
ION EXCHANGE CHROMATOGRAPHY
MIXTURES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
QUANTITATIVE CHEMICAL ANALYSIS
SEPARATION PROCESSES
SOLUTIONS
TRACE AMOUNTS