Radiochemical analysis of 93Zr

Espartero, A.G.; Suárez, José Félix Restrepo; Rodrı́guez, M.; Piña, Gabriel

doi:10.1016/s0969-8043(01)00164-6

Cited by 15 publications

(6 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The values of free energy of specific adsorption, ∆G at various temperatures were calculated by using Eq. (8) and are listed in Table 4. The negative values of ∆G indicate that the adsorption of zirconium on lateritic minerals occurs via spontaneous process.…”

Section: Effect Of Temperaturementioning

confidence: 99%

“…These include coprecipitation [3,4], flotation [5,6], solvent extraction [7,8], ion exchange [9] and adsorption. The adsorbents used for zirconium ions include oxycellulose [10], polymer [11], peat [12], activated charcoal [13], anion exchangers [14,15], oxides of manganese [16], and iron [17], metal antimonates [18], and silica gel [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Zirconium decontamination from aqueous media using lateritic minerals

Khalid¹,

Daud²,

Ahmad³

2005

Radiochimica Acta

View full text Add to dashboard Cite

The sorption behavior of zirconium on minerals from a lateritic weathering has been carried out to evaluate its potential for the decontamination of zirconium ions from aqueous solutions. Various physico-chemical parameters such as selection of appropriate electrolyte, equilibration time, amount of adsorbent, concentration of adsorbate, effect of diverse ions and temperature were studied in order to simulate the best conditions under which this material can be used as an adsorbent, employing batch method and radiotracer technique. Maximum adsorption was observed at 0.005 mol L −1 acid solutions (HNO 3 , HCl, H 2 SO 4 and HClO 4 ) using 0.3 g of adsorbent for 1.499 × 10 −4 mol L −1 zirconium concentration in five minutes equilibration time. Studies show that the adsorption of zirconium decreases with the increase in the concentrations of all the acids. The adsorption data follows the Freundlich isotherm over the range of 7.5 × 10 −5 to 3.0 × 10 −3 mol L −1 zirconium concentration. The characteristic Freundlich constants i.e. 1/n = 0.55 ± 0.03 and K = 1.36 × 10 −3 ± 7.0 × 10 −5 mol g −1 have been computed for the sorption system. The sorption mean free energy from the Dubinin-Radushkevich isotherm is 11.2 ± 0.4 kJ mol −1 indicating ion-exchange mechanism of chemisorption. The uptake of zirconium increases with the rise in temperature (283-323 K). Thermodynamic quantities i.e. ∆G, ∆S and ∆H have also been calculated for the system. The sorption process was found endothermic.

show abstract

Section: Effect Of Temperaturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Zirconium decontamination from aqueous media using lateritic minerals

Khalid¹,

Daud²,

Ahmad³

2005

Radiochimica Acta

View full text Add to dashboard Cite

show abstract

“…Bombard [8] combined the liquid-liquid extraction developed by Espartero et al [4] with separation on TEVA column (extraction chromatographic resin that contains trioctyl methyl ammonium chloride, manufactured by TrisKem International). Column was conditioned with 8 M LiNO3 / 0.01 M HNO3, load solution was 9 M HCl.…”

Section: Separation Methods Of 93 Zrmentioning

confidence: 99%

“…Sample was loaded onto Dowex ion exchange column in 9 M HNO3 and column was washed with 9 M HNO3, then the liquid-liquid extraction developed by Espartero at al. [4] was performed. Load solution of TRU column was 4 M HCl, and column was washed with 2 M HCl.…”

Section: Separation Methods Of 93 Zrmentioning

confidence: 99%

“…When measuring it by LSC, complete separation from β-emitting and X-ray emitting radionuclides (e.g. 3 H, 14 C, 54 Mn, 55 Fe, 60 Co, 63 Ni, 65 Zn, 90 Sr, 90 Y, 93m Nb, 94 Nb, 93 Mo, 133 Ba, 137 Cs, 152 Eu, 239 Np, 241 Pu) is necessary [4]. When measuring it by ICP-MS, isobaric ( 93 Nb, 93m Nb and 93 Mo) and polyatomic (e.g., 92 Zr 1 H) interferences as well as abundance sensitivity affect the results [5,6].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Determination of 93Zr in nuclear power plant wastes

Osváth

Vajda²,

Molnár³

et al. 2017

J Radioanal Nucl Chem

View full text Add to dashboard Cite

 Users may download and print one copy of any publication from the public portal for the purpose of private study or research.  You may not further distribute the material or use it for any profit-making activity or commercial gain  You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.

show abstract

Interference-free determination of sub ng kg−1 levels of long-lived 93Zr in the presence of high concentrations (μg kg−1) of 93Mo and 93Nb using ICP-MS/MS

Petrov¹,

Russell

Douglas³

et al. 2017

Anal Bioanal Chem

View full text Add to dashboard Cite

Long-lived high abundance radionuclides are of increasing interest with regard to decommissioning of nuclear sites and longer term nuclear waste storage and disposal. In many cases, no routine technique is available for their measurement in nuclear waste and low-level (ng kg) environmental samples. Recent advances in ICP-MS technology offer attractive features for the selective and sensitive determination of a wide range of long-lived radionuclides. In this work, inductively coupled plasma-tandem mass spectrometry (ICP-MS/MS)-based methodology, suitable for accurate routine determinations of Zr at very low (ng kg) levels in the presence of high levels (μg kg) of the isobaric interferents Nb andMo (often present in nuclear waste samples), is reported for the first time. Additionally, a novel and systematic strategy for method development based on the use of non-radioactive isotopes is proposed. It relies on gas-phase chemical reactions for different molecular ion formation to achieve isobaric interference removal. Using cell gas mixtures of NH/He/H or H/O, and suitable mass shifts, the signal from the Nb andMo isobaric interferences on Zr were suppressed by up to 5 orders of magnitude. The achieved limit of detection forZr was 1.3 × 10 Bq g (equivalent to 0.14 ng kg). The sample analysis time is 2 min, which represents a significant improvement in terms of sample throughput, compared to liquid scintillation counting methods. The method described here can be used for routine measurements of Zr at environmentally relevant levels. It can also be combined with radiometric techniques for use towards the standardisation ofZr measurements. Graphical abstract Interference-free determination of Zr in the presence of high concentrations of isobaricMo and Nb by ICP-MS/MS.

show abstract

Radiochemical analysis of 93Zr

Cited by 15 publications

References 4 publications

Zirconium decontamination from aqueous media using lateritic minerals

Zirconium decontamination from aqueous media using lateritic minerals

Determination of 93Zr in nuclear power plant wastes

Interference-free determination of sub ng kg−1 levels of long-lived 93Zr in the presence of high concentrations (μg kg−1) of 93Mo and 93Nb using ICP-MS/MS

Contact Info

Product

Resources

About