Determination of metal ions by high-performance liquid chromatographic separation of their hydroxamic acid chelates
Metal ions are determined by adding N-methylfurohydroxamic acid to an aqueous sample and then separating the metal chelates by direct injection onto a liquid chromatographic column. Separations on a C/sub 8/ silica column and a polystyrene-divinylbenzene column are compared, with better separations seen on the polymeric column. The complexes formed at low pH values are cationic and are separated by an ion pairing mechanism. Retention times and selectivity of the metal complexes can be varied by changing the pH. Several metal ions can be separated and quantified; separation conditions, linear calibration curve ranges, and detection limits are presented for Zr(IV), Hf(IV), Fe(III), Nb(V), Al(III), and Sb(III). Interferences due to the presence of other ions in solution are investigated. Finally, an antiperspirant sample is analyzed for zirconium by high-performance liquid chromatography.
- Research Organization:
- Iowa State Univ., Ames
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 6087893
- Journal Information:
- Anal. Chem.; (United States), Vol. 59:18
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALUMINIUM
ABSORPTION SPECTROSCOPY
LIQUID COLUMN CHROMATOGRAPHY
ANTIMONY
HAFNIUM
IRON
NIOBIUM
ZIRCONIUM
CATIONS
CHELATES
EXPERIMENTAL DATA
HYDROXAMIC ACIDS
INTERFERING ELEMENTS
PH VALUE
QUANTITATIVE CHEMICAL ANALYSIS
QUANTITY RATIO
AMINES
CHARGED PARTICLES
CHEMICAL ANALYSIS
CHROMATOGRAPHY
COMPLEXES
DATA
ELEMENTS
HYDROXY COMPOUNDS
INFORMATION
IONS
METALS
NUMERICAL DATA
ORGANIC COMPOUNDS
SEPARATION PROCESSES
SPECTROSCOPY
TRANSITION ELEMENTS
400102* - Chemical & Spectral Procedures
400105 - Separation Procedures