José Manuel González-López1, Elena María González-Romarís2, Isabel Idoate-Cervantes3 and Jesús Fernando Escanero4 1Miguel Servet University Hospital, Clinical Biochemistry Service, Zaragoza 2Galician Health Service, Clinical Laboratory, Santiago de Compostela 3Navarra Hospital Complex, Clinical Laboratory, Pamplona 4University of Zaragoza, Faculty of Medicine, Department of Pharmacology and Phy...

Lithium concentrations in the serum of patients undergoing therapy with lithium salts were measured by atomic absorption spectroscopy. Serum was diluted 10-fold with water. Physiological amounts of sodium and potassium were included in the blank and standard solutions because these cations enhance the lithium signal by 2%. Calcium, magnesium, bicarbonate, sulfate, and phosphate at the concentra...

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),...

THE INITIAL STUDIES BY WILLIS (2, 3) and the more recent work of Zettner and Seligson (i) and others (4-7, 9-11) have proven the utility of atomic absorption spectrophotometry (AAS) in the clinical laboratory. However, until very recently there has been very little if any published information dealing with normal serum calcium values by atomic absorption spectrophotometry (11). The primary purp...

this article presents the method of extraction-preconcentration of lead, cadmium, and nickel ions from food samples using the ghezeljeh montmorillonite nanoclay (geleh-sar-shoor) as a new native adsorbent in batch single component systems. the extraction-preconcentration of heavy metals were carried out by applying the solid phase extraction (spe) method followed by atomic absorption spectrosco...

The therapeutic use of gold compounds is of considerable antiquity, as discussed by Nineham (1); it has been used for the treatment of rheumatoid arthritis since 1927 (2). Treatment in the past has been largely empirical. Until the advent of the atomic absorption spectrophotometer the estimation of gold in biological fluids by classical chemical or other methods was beyond the capability of the...

In developing this method for determination of Al in bone we paid special attention to the homogenization of bone samples, which presents great difficulties for trace-element analysis. To minimize the risk of contamination, we preferred low-temperature ashing over classical wet-digestion techniques for destruction of the organic material. Graphite-furnace atomic absorption spectroscopy is used ...

lead, copper, cobalt, nickel, iron and zinc ions form monocitrate complexes (negative charge) in citrate solution which is absorbed on the citrate form of anion-exchange resins (citrate as counter ion) y exchange of citrate ion with citrate complexes. these are subsequently recovered from the resin by 0.5m ammonium citrate eluent at ph 2.0. under optimized conditions, quantitative recovery was ...