Mercury levels in canned tuna ®sh were determined by cold vapour atomic absorption spectrophotometry while cadmium and lead levels were determined by ̄ame atomic absorption spectrophotometry. The metal contents in the samples, expressed in mg gÿ1 wet weight, varied from 0.20 to 0.66 with an average value of 0.29 for mercury, from 0.09 to 0.32 with an average value of 0.18 for cadmium and from 0...

This method for direct determination of Zn in cerebrospinal fluid (CSF) involves flame atomic absorption spectrophotometry with a pulse nebulizer technique. Standard solutions of Zn in 150 mmol/L NaCl were used. We could account for 88% of added standard with the method in individual samples from 10 patients and in pooled CSF. The method is acceptably precise, CVs in pooled CSF ranging from 4 t...

We describe the rapid separation of inorganic arsenic plus metabolites from arsenobetaine or seafood arsenic in urine. Traditional, high-pressure liquid chromatography is replaced by disposable silica-based cation-exchange cartridges for this separation. Both fractions are quickly separated and collected for analysis by atomic absorption spectrophotometry. Analytical recovery of both fractions ...

The analysis of arsenic in soil requires a procedure which is capable of releasing microgram quantities from a complex matrix and eliminating interferences for a specific determination. Kingsley and Schaffert ( I ) have described microdetermination of arsenic in biological material, using concentrated hydrochloric acid for digesting the sample. Beard and Lyerly ( 2 ) have applied the selective ...

A method is described for analysis of nickel in serum and heparinized blood. After the sample has been subjected to protein precipitation with nitric acid and heat, nickel in the protein-free extract is measured by electrothermal atomic absorption with Zeeman background correction. The method is more sensitive, rapid, and convenient than previous techniques, and less subject to nickel contamina...

We examined in this study the pharmacokinetics of Sb in the affected skin and normal skin of patients treated with sodium stibogluconate for cutaneous leishmaniasis and compared the results with those for the blood. The procedure was fully explained, and a written consent was obtained from each of nine patients. After a dose of sodium stibogluconate equivalent to 600 mg of Sb was administered i...

‘T1HI5 REPORT presents a procedure for the automated simultaneous determination of both calcium and phosphate, and its application to the analysis of a 0.6-mi. serum specimen. Calcium is determined by atomic absorption spectrophotometry, using a portion of the diluted and dialyzed serum sample (1). Phosphate is determined on the undialyzed residual serum by an improved automated spectrophotomet...

The present study was undertaken for assessing the level of heavy metals such as copper, nickel and zinc in water, water hyacinth and soil samples of Rupahi beel, Nagaon, Assam. Metals were detected using flame atomic absorption spectrophotometry. The results revealed that by and large all the three metals are present in all the samples. The average concentration of Cu, Ni and Zn in both water ...

Lead concentrations in whole blood have been determined for a random sampling of newborns (age 1-8 days) with the use of a microtechnique involving carbon rod atomization and atomic absorption spectrophotometry. The mean lead concentration of the newborns (13.8 ± 4.5 g/100 ml of whole blood) significantly differed from that of pediatric populations at low (22.6 ± 6.1) and high lead (32.1 ± 10.4...

203Pb was used to monitor sample-preparation techniques used in four atomic absorption methods for determination of lead in blood. Sources of error and their magnitude were identified and measured for each of the following analytical procedures: precipitation with trichloroacetic acid, separation with ammonium pyrrolidine dithiocarbonate into methyl isobutyl ketone, digestion with acids, and co...