Gradient anion chromatography with hydroxide and carbonate eluents using simultaneous conductivity and pH detection

Journal Article · Sun Mar 15 04:00:00 EST 1987 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00133a003· OSTI ID:6614467

Shintani, H; Dasgupta, P K

High exchange capacity membrane suppressors make gradient anion chromatography practical, with submicromolar detection limits attainable for a number of common anions when a data acquisition system is used to store a blank run and perform background subtraction. With hydroxide eluents, pH measurement yields attractive detection limits. Postsuppressors, based on a porous polypropylene tubular membrane as is, or coated with silicone rubber, permit acceptable performance with the more commonly used carbonate-based eluents. For isocratic elution with hydroxide eluents, direct potentiometric pH detection allows limits of detection only slightly worse than conductometry and is adequate for most purposes.

• Research Organization: Texas Tech Univ., Lubbock
• DOE Contract Number: FG05-84ER13281
• OSTI ID: 6614467
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 59:6; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
ACCURACY
ANIONS
CARBON COMPOUNDS
CARBONATES
CHARGED PARTICLES
CHROMATOGRAPHY
DATA
ELUTRIATION
EXPERIMENTAL DATA
HYDROGEN COMPOUNDS
HYDROXIDES
INFORMATION
ION EXCHANGE CHROMATOGRAPHY
ION EXCHANGE MATERIALS
IONS
MATERIALS
MEMBRANES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PERFORMANCE
PH VALUE
POLYMERS
POLYOLEFINS
POLYPROPYLENE
SEPARATION PROCESSES