Spectrophotometric study of the reactions of arsenazo III with alkaline-earth metals

Michaylova, V.; Kouleva, N.

doi:10.1016/0039-9140(74)80181-5

Cited by 19 publications

(4 citation statements)

References 7 publications

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“…It has been utilized with a large variety of species and under many sets of conditions. Since Sawin (1) reported its synthesis, arsenazo III has been used successfully for the determination of Pa, Np-(IV), Th, Zr, Hf, and U(IV) (1,2), Pd(II) (3,4), Nb (5), Bi (6), Y (7), Zn and Cd (8), alkaline earth metals (9), and Cu (10).…”

Section: Literature Citedmentioning

confidence: 99%

Chloride anion interference in the spectrophotometric determination of Arsenazo III

Minganti¹,

Gisin²,

Gokel³

1983

Anal. Chem.

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Section: Literature Citedmentioning

confidence: 99%

Chloride anion interference in the spectrophotometric determination of Arsenazo III

Minganti¹,

Gisin²,

Gokel³

1983

Anal. Chem.

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“…For individual or simultaneous determination of UO

_{2}^{2+}

and Sr 2+ in solution a method was developed from that described by Yong et al (1996), using arsenazo III. Michaylova and Kouleva (1974) showed that the complex formation of strontium with arsenazo III is maximum after 24 min at pH 9–10. Each tube (30 µL of target metal or metal mixture) was supplemented with 1.97 mL of one of two solutions, as appropriate: 0.1 M HCl for UO

_{2}^{2+}

and 0.1 M borate buffer, pH 9.0 for Sr 2+ .…”

Section: Methodsmentioning

confidence: 99%

Radiotolerance of phosphatases of a Serratia sp.: Potential for the use of this organism in the biomineralization of wastes containing radionuclides

Paterson-Beedle

Jeong

Lee

et al. 2012

Biotech & Bioengineering

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Aqueous wastes from nuclear fuel reprocessing present special problems of radiotoxicity of the active species. Cells of Serratia sp. were found previously to accumulate high levels of hydrogen uranyl phosphate (HUP) via the activity of a phosphatase enzyme. Uranium is of relatively low radiotoxicity whereas radionuclide fission products such as (90)Sr and (137)Cs are highly radiotoxic. These radionuclides can be co-crystallized, held within the bio-HUP "host" lattice on the bacterial cells and thereby removed from contaminated solution, depending on continued phosphatase activity. Radiostability tests using a commercial (60)Co γ-source showed that while cell viability and activity of purified phosphatase were lost within a few hours on irradiation, whole-cell phosphatase retained 80% of the initial activity, even after loss of cell culturability, which was increased to 100% by the incorporation of mercaptoethanol as an example radioprotectant, beyond an accumulated dose of >1.3 MGy. Using this co-crystallization approach (without mercaptoethanol) (137)Cs(+) and (85)Sr(2+) were removed from a simulated waste selectively against a 33-fold excess of Na(+).

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“…A simple and sensitive spectrophotometric methods based on colored complexes of Arsenazo III with Th(IV) [30], Ce(IV), La(III) [31] and Sr(II) [32] in aqueous medium were used for their determination. The concentration of metal ions in the solution before and after adsorption was determined with a Unicam UV2-300 UV-Vis spectrophotometer, by measuring the absorbance at max of 660 nm for Th(IV), 620 nm for Ce(IV) and La(III) and 643 nm for Sr(II).…”

Section: Determination Of Th(iv) Ce(iv) La(iii) and Sr(ii)mentioning

confidence: 99%

Study on adsorption behavior and separation efficiency of naturally occurring clay for some elements by batch experiments

et al. 2012

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KEYWORDSThis paper describes the versatile nature of clay that was obtained from Suez Gulf, Suez city, Egypt, as a new low cost natural resource which is non toxic to ecosystem and highly effective adsorbent material. The properties of the natural clay and its significance in removing Th(IV) and Ce(IV) as a representative of tetravalent actinides and lanthanides, respectively, La(III) as a representative of trivalent lanthanides as well as homologues of americium and Sr(II) as one of the fission products, in aqueous solutions have been studied, in order to consider its application for nuclear waste treatment. Batch experiments have been carried out to determine the effect of various factors such as initial metal ion concentration, clay dose, pH, contact time, and temperature on the adsorption process. The results have dictated that, the adsorption efficiency of the natural clay was significantly high at pH = 4. Maximum metal ion uptake capacity of clay has been obtained from batch studies was 99.24, 98.21, 77.76 and 57.94% for Th(IV), Ce(IV), La(III) and Sr(II), respectively. The thermodynamic parameters (H o , S o and G o ) have been calculated from the temperature dependent adsorption isotherms. Furthermore, separation factors () have been calculated in order to separate these elements from each other at pH = 4. Adsorption Natural clay Separation factor Radioactive waste Batch experiments Thermodynamic parameters

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Spectrophotometric study of the reactions of arsenazo III with alkaline-earth metals

Cited by 19 publications

References 7 publications

Chloride anion interference in the spectrophotometric determination of Arsenazo III

Chloride anion interference in the spectrophotometric determination of Arsenazo III

Radiotolerance of phosphatases of a Serratia sp.: Potential for the use of this organism in the biomineralization of wastes containing radionuclides

Study on adsorption behavior and separation efficiency of naturally occurring clay for some elements by batch experiments

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