Rapid Spectrophotometric Determination of Submilligram Quantities of Uranium

François, Cindy

doi:10.1021/ac60133a012

Cited by 73 publications

(13 citation statements)

References 3 publications

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“…A simple and sensitive spectrophotometric method was used in the experiments to determine uranium in solution. The uranium remained in solution was analyzed with the DBM-TOPO as complexing agent at 405 nm against reagent blank employing spectrophotometric method on Shimadzu UV-1601 UV-VIS spectrophotometer [17,18]. The amount of adsorbed uranium was estimated from the difference of the uranium concentrations in the aqueous phase before and after the adsorption.…”

Section: Batch Adsorption Experimentsmentioning

confidence: 99%

Sorption of uranium(VI) from aqueous solutions by akaganeite

Yuşan

Akyıl

2008

Journal of Hazardous Materials

135

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Section: Batch Adsorption Experimentsmentioning

confidence: 99%

Sorption of uranium(VI) from aqueous solutions by akaganeite

Yuşan

Akyıl

2008

Journal of Hazardous Materials

135

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“…After equilibration, the suspension was centrifuged in a stoppered tube for 5 min at 3500 rpm. Then the residual U(VI) ions in aqueous solution were determined spectrophotometrically using trioctyl phosphine oxide and di-benzoyl methane method at 405 nm using a spectrophotometer [29,30]. The amount of adsorbed U(VI) was calculated from the difference of the uranium concentration in aqueous solution before and after adsorption…”

Section: Batch Adsorption Experimentsmentioning

confidence: 99%

Adsorption and thermodynamics studies of U(VI) by composite adsorbent in a batch system

Donat

2010

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The adsorption of U(VI) from aqueous solutions onto composite adsorbent (algistar) has been studied using a batch adsorber. The parameters that affect the U(VI) sorption, such as contact time, solution pH, initial U(VI) concentration, and temperature, have been investigated and optimized conditions determined. Equilibrium isotherm studies were used to evaluate the maximum sorption capacity of composite adsorbent, and experimental results showed this to be 43.10 mg/g. The adsorption patterns of metal ions on composite adsorbent followed the Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherms. The Freundlich, Langmuir, and D-R models have been applied, and the data correlate well with Langmuir model, and that the sorption is physical in nature (the sorption energy E ads =12.90 kJ/mol). Thermodynamic parameters (ΔH ads o =−41.08 kJ/mol, ΔS ads o =−68.00 J/molK, ΔG ads (298.15 K)=−20.81 kJ/mol) showed the exothermic heat of adsorption and the feasibility of the process. The results suggested that the composite adsorbent is suitable as a sorbent material for recovery and biosorption/adsorption of uranium ions from aqueous solutions.

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“…The solution was separated from the solids by centrifugation (5 min at 3000 rpm). Then the residual U(VI) ions in aqueous solution were determined spectrophotometrically using TOPO-DBM (trioctyl phosphine oxide and di-benzoyl methane) method at 405 nm using spectrophotometer [19].…”

Section: Batch Adsorption Experimentsmentioning

confidence: 99%