Simultaneous multi element atomic absorption for urine.

Computer software for a simultaneous multi-element atomic-absorption spectrometer

Simultaneous determination of cobalt, nickel and copper in seawater with a multi-element electrothermal atomic absorption spectrometer and microcolumn preconcentration

A preconcentration system for multi-element electrothermal atomic absorption spectrometry was developed with a microcolumn packed with a chelating resin. The proposed method was applied successfully to the simultaneous determination of Co, Ni and Cu in seawater. A sample volume of 2 ml was required for the analysis. Retention of metal ions as a complex on the microcolumn was achieved by using M...

Estimation of gold in urine by atomic absorption spectroscopy.

The gold toxicity occasionally encountered during the treatment of rheumatoid arthritis by chrysotherapy may be conveniently treated with chelating agents to facilitate the urinary excretion of gold. It is of interest to monitor this urinary gold excretion, atomic absorption spectroscopy being a convenient technique. Although serum gold concentrations may be estimated after simple dilution (1),...

Determination of oxalic acid in urine by atomic absorption spectrophotometry.

A method is described for determination of oxalic acid in urine using atomic absorption spectrophotometry. The concentration of urinary oxalic acid is calculated by using the difference between two determinations of calcium: first, the excess of calcium in the supernatant after precipitation as calcium oxalate at pH 5, and second, the total calcium determined at pH less than 1 (endogenous and a...

Automated, simultaneous microdetermination of calcium and magnesium by atomic absorption.

A procedure is described for the simultaneous, automatic determination of serum calcium and magnesium with the AutoAnalyzer, and a dualchannel, double-beam atomic absorption spectrophotometer, the IL Model 153. Advantages over existing procedures include a high rate of analysis (90 samples or 180tests per hour) and low sample consumption (a total of 30 l for both determinations). We have compar...