Preconcentration of selenium and antimony from seawater for determination by graphite furnace atomic absorption spectrometry

Sturgeon, Ralph E.; Willie, S. N.; Berman, S. S.

doi:10.1021/ac00279a006

Cited by 57 publications

(15 citation statements)

References 30 publications

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“…20 APDC is the complexing agent most widely used for the selective preconcentration of antimony(III) using solvent extraction 21 and solid-phase extraction. 13,22 On the other hand, the solvent extraction of antimony as iodide compounds is well documented in the literature. 23 However, to the best of our knowledge, there is no report about the preconcentration of antimony based on the retention of Sb(III)-APDC and Sb(III)-iodide compounds through a Chromosorb 102 resin column.…”

Section: Introductionmentioning

confidence: 99%

Speciation of Antimony Using Chromosorb 102 Resin as a Retention Medium

et al. 2003

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The selective retention of the Sb(III) chelate with ammonium pyrrolidine dithiocarbamate (APDC) on a column of Chromosorb 102 resin from a buffered sample solution including Sb(V) was used for the determination of Sb(III). The retained antimony was eluted with acetone. The retention of the Sb(III)-iodide compounds with sodium iodide on the Chromosorb 102 resin column from the same solution after reducing Sb(V) to Sb(III) by iodide in acidic solution was used to preconcentrate the total antimony. The retained antimony was eluted with 0.25 mol l -1 HNO3. The antimony in the effluent was determined by flame atomic-absorption spectrometry. Also, the total antimony was determined directly by graphite-furnace atomic absorption spectrometry. The Sb(V) concentration could be calculated by the difference. The recoveries were ≥95%. The detection limits of a combination of the column procedure and flame AAS for antimony were 6 -61 µg l -1 and comparable to 4 µg l -1 for a direct GFAAS measurement. The relative standard deviations were <6%. The procedure was applied to the determination of Sb(III) and Sb(V) in spiked tap water, waste-water samples and a certified copper metal with the satisfactory results.

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Section: Introductionmentioning

confidence: 99%

Speciation of Antimony Using Chromosorb 102 Resin as a Retention Medium

et al. 2003

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“…Also, there are only a very limited studies specifically aimed at antimony removal from aqueous systems, although some procedures have been proposed for the preconcentration and enrichment of antimony from various matrices [4][5][6][7]. Adsorption on solid surfaces is the most versatile and widely used technique for the removal of low concentrations of toxic substances from aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

Adsorption and removal of antimony from aqueous solution by an activated Alumina

Ohki²,

Miyagawa

2001

Toxicological & Environmental Chemistry

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The adsorption of Sb(V) ions from aqueous solutions onto commercially available activated alumina (AA) was investigated. AA has a much higher adsorption capacity than presently used adsorbents. Sb(V) ions are likely adsorbed through electrostatic attraction and/or specific adsorption mechanism, while the optimum pH is found in the range of 2.8-4.3. The Sb(V) ions adsorption capacities increase with increasing temperature. The addition of nitrate, acetate, arsenite, chloride, and silicate ions affected Sb(V) ions adsorption only slightly, while the coexisting ascorbate, arsenate, phosphate, sulfate, EDTA, tartrate, and citrate ions substantially depressed Sb(V) ions adsorption.

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“…A solution containing: MgfNCbh 0.1 %, Cu 0.05% as Cu(NOj)2 and Triton X-100 0.1 % was used as matrix modifier. Standard addition was used in all measurements and the reproducibility of the method was between 4-8% RSD (relative stan dard deviation) when erythrocytes, plasma, diets or tissues were assayed [26], Glutathione peroxidase ac tivity was assayed using the coupled test procedure developed by Paglia and Valentine [27], using HiOi, in order to measure only the Se-dependent GSHpx [28]. The results were statistically analyzed using vari ance analysis and linear regression [29].…”

Section: Methodsmentioning

confidence: 99%

Effects of Durum Wheat Dietary Selenium on Glutathione Peroxidase Activity and Se Content in Long-Term-Fed Rats

Ciappellano

Testolin²,

Porrini³

1989

Ann Nutr Metab

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A 120-day assay was made of Se concentration and glutathione peroxidase Se-dependent (GSHpx) activity in plasma, erythrocytes and liver of female Sprague-Dawley rats fed either a Torula diet (low Se content) or a durum wheat diet providing 28–405 µg of Se/kg diet. For all groups there was a strong increase for the first 20 days in plasma and liver Se; for the remaining period the increase was lower; erythrocyte Se increased, as before, in the first 60 days for groups fed 28–200 µg/kg diet, after this period it decreased in the groups fed high-Se diet. Plasma GSHpx activity was extremely sensitive to dietary Se levels and increased for up to 40 days of repletion, after which the trend was to plateau; liver and erythrocyte GSHpx activity increased continuously for up to 60 days of supplementation, it then remained constant. The correlation between Se in plasma, liver and erythrocytes and its GSHpx activity was statistically significant (p < 0.001). These results suggested that in long-term-fed rats, a diet with levels of 100–400 µg/kg was sufficient to satisfy the rat’s needs; there was no evidence of toxicity and, moreover, in all tissues, an amount of Se, probably bound to proteins with unknown functions, was present.

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Preconcentration of selenium and antimony from seawater for determination by graphite furnace atomic absorption spectrometry

Cited by 57 publications

References 30 publications

Speciation of Antimony Using Chromosorb 102 Resin as a Retention Medium

Speciation of Antimony Using Chromosorb 102 Resin as a Retention Medium

Adsorption and removal of antimony from aqueous solution by an activated Alumina

Effects of Durum Wheat Dietary Selenium on Glutathione Peroxidase Activity and Se Content in Long-Term-Fed Rats

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