The use of liquid chromatography for the analysis of metal ions in aqueous solutions and for the determination of water in organic matrices
The value of a p-phenylenediammonium eluent in single-column ion chromatography is demonstrated. It is shown to be particularly useful for separating trivalent aluminum from common divalent metal ion interferences. The aluminum is detected with a conductivity detector. Postcolumn reaction in liquid chromatography is reviewed. The application of disodium 1-(2-thiazolylazo)-2-naphthol-3,6-disulfonate (TAN-3,6-S) to the detection of metal ions in single-column ion chromatography with a visible absorbance detector is explored. Temperature is shown to affect the retention times of divalent and trivalent metal ions in ion chromatography. Several chromatographic separations are improved by operating the system at elevated temperature. Two methods for the determination of water in organic matrices using liquid chromatography and a spectrophotometric detector are presented. Both employ a chromatographic separation by ion-exclusion. The first detection method makes use of solvatochromism, the shift in an organic spectrum which occurs as solvent polarity is changed. The second detection method uses a solid-phase postcolumn reactor containing a cation-exchange resin in the H/sup +/ form. This reactor acts as catalyst for a reaction occurring between water and two components of the mobile phase, methanol and trans-cinnamaldehyde. 122 refs., 40 figs., 16 tabs.
- Research Organization:
- Ames Lab., IA (USA)
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 6414950
- Report Number(s):
- IS-T-1373; ON: DE89007605
- Resource Relation:
- Other Information: Thesis (Ph.D.). Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALUMINIUM
ION EXCHANGE CHROMATOGRAPHY
METALS
WATER
LIQUID COLUMN CHROMATOGRAPHY
ABSORPTION SPECTROSCOPY
ACETOPHENONE
AMINES
AQUEOUS SOLUTIONS
BENZYL ALCOHOL
BETAINE
CHELATES
EXPERIMENTAL DATA
MOLECULAR STRUCTURE
NAPHTHOLS
RARE EARTHS
SENSITIVITY
SPECTROPHOTOMETRY
SULFONATES
TEMPERATURE EFFECTS
ZINC BASE ALLOYS
ALCOHOLS
ALLOYS
AMINO ACIDS
AMMONIUM COMPOUNDS
AROMATICS
CARBOXYLIC ACIDS
CHROMATOGRAPHY
COMPLEXES
DATA
DISPERSIONS
DRUGS
ELEMENTS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
KETONES
LIPOTROPIC FACTORS
MIXTURES
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
PHENOLS
QUATERNARY COMPOUNDS
SEPARATION PROCESSES
SOLUTIONS
SPECTROSCOPY
ZINC ALLOYS
400100* - Analytical & Separations Chemistry