Validation of an inductively coupled plasma mass spectrometry (ICP-MS) method for the determination of cerium, strontium, and titanium in ceramic materials used in radiological dispersal devices (RDDs)

Packer, Ana Paula; Larivière, Dominic; Li, Chunsheng; Chen, Michael; Fawcett, Amanda S.; Nielsen, Kathy; Mattson, Kristine; Chatt, A.; Scriver, Christine; Erhardt, Lorne

doi:10.1016/j.aca.2007.02.024

Cited by 65 publications

(46 citation statements)

References 10 publications

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“…In the case of Ce, however, it was not possible to detect it due to CeF 2 precipitate formation. For Ce quantification, a solution consisting of H 2 O 2 and HNO 3 was used instead [22]. After preparing the corresponding solutions, the catalysts were dissolved using a digester and thereafter analyzed in an ICP-OES instrument.…”

Section: Fresh and Reduced Catalysts Characterizationmentioning

confidence: 99%

Catalyst Deactivation and Regeneration Processes in Biogas Tri-Reforming Process. The Effect of Hydrogen Sulfide Addition

et al. 2018

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Abstract:This work studies Ni-based catalyst deactivation and regeneration processes in the presence of H 2 S under a biogas tri-reforming process for hydrogen production, which is an energy vector of great interest. 25 ppm of hydrogen sulfide were continuously added to the system in order to provoke an observable catalyst deactivation, and once fully deactivated two different regeneration processes were studied: a self-regeneration and a regeneration by low temperature oxidation. For that purpose, several Ni-based catalysts and a bimetallic Rh-Ni catalyst supported on alumina modified with CeO 2 and ZrO 2 were used as well as a commercial Katalco 57-5 for comparison purposes. Ni/Ce-Al 2 O 3 and Ni/Ce-Zr-Al 2 O 3 catalysts almost recovered their initial activity. For these catalysts, after the regeneration under oxidative conditions at low temperature, the CO 2 conversions achieved-79.5% and 86.9%, respectively-were significantly higher than the ones obtained before sulfur poisoning-66.7% and 45.2%, respectively. This effect could be attributed to the support modification with CeO 2 and the higher selectivity achieved for the Reverse Water-Gas-Shift (rWGS) reaction after catalysts deactivation. As expected, the bimetallic Rh-Ni/Ce-Al 2 O 3 catalyst showed higher resistance to deactivation and its sulfur poisoning seems to be reversible. In the case of the commercial and Ni/Zr-Al 2 O 3 catalysts, they did not recover their activity.

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Section: Fresh and Reduced Catalysts Characterizationmentioning

confidence: 99%

Catalyst Deactivation and Regeneration Processes in Biogas Tri-Reforming Process. The Effect of Hydrogen Sulfide Addition

et al. 2018

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“…The instrumental techniques which have been applied to the cerium determination include X-ray fluorescence [3], inductively coupled plasma-atomic emission spectrometry (ICP-AES) [4,5], graphite furnace-atomic absorption spectrometry (GF-AAS) [5], inductively coupled plasmamass spectrometry (ICP-MS) [6], chemiluminescence [7], fluorimetry [8], ion-selective electrodes [9 -11], spectrophotometry [12,13], and neutron activation analysis (NAA) [14]. Nevertheless, most of these techniques allow only the measurements of the total concentration and require costly and specialized instrumentation, which may not be available in many laboratories.…”

Section: Introductionmentioning

confidence: 99%

Adsorptive Stripping Voltammetric Determination of Nanomolar Concentration of Cerium(III) at a Carbon Paste Electrode Modified by N′‐[(2‐Hydroxyphenyl)Methylidene]‐2‐Furohydrazide

et al. 2009

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The aim of this work was to obtain an adsorptive stripping voltammetric method for the Ce(III) determination at a carbon paste electrode, chemically modified with N-[(2-hydroxyphenyl)methylidene]-2-furohydrazide (NHMF). The electroanalytical procedure comprised two steps: the Ce(III) chemical accumulation at À 200 mV followed by the electrochemical detection of the Ce(III)/NHMF complex, using anodic stripping voltammetry. The factors, influencing the adsorptive stripping performance, were optimized including the modifier quantity in the paste, the electrolyte concentrations, the solution pH and the accumulation potential or time. The resulting electrode demonstrated a linear response over a wide range of Ce(III) concentration (5.0 -90 nmol dm À3 ). The detection limit was found to be 0.8 nmol dm À3 on the basis of a signal to noise ratio of 3. The precision for six determinations of 10 and 55 nmol dm À3Ce(III) was 5.6% and 2.1% (relative standard deviation), respectively. Application of the procedure to the determination of cerium in phosphate rock and wastewater samples gave good results.

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“…These methods have advantages, but also have limitations. With low detection limit, wide linear range, and high accuracy and relatively free from interferences, inductively coupled plasmas mass spectrometry (ICP-MS) has been proven to be a powerful technique for inorganic chemical analysis (Yasemin et al, 2007;Julie and Ivan, 2006;Packer et al, 2007;Tagami and Uchida, 2007;Zhao Xiaoyu et al, 2006). In this study, the speciation of Tl, Cd and Pb existing in Tl-containing pyrite and its cinder was investigated by the sequential extraction procedure with ICP-MS determination.…”

Section: Introductionmentioning

confidence: 99%

Speciation analysis of metals (Tl, Cd and Pb) in Tl-containing pyrite and its cinder from Yunfu Mine, China, by ICP-MS with sequential extraction

et al. 2010

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The speciation of heavy metals such as thallium, cadmium and lead existing in pyrite and pyrite cinder was analyzed by ICP-MS with a sequential extraction procedure. The distribution patterns of these metals including exchangeable, reducible, oxidizable and residual fractions were obtained. Tl, Cd and Pb in pyrite and pyrite cinder samples from each extraction step were determined by inductively coupled plasma mass spectrometry (ICP-MS). Under the optimized instrumental conditions, detection limits of Tl, Cd and Pb in different matrices were within the range of 0.006-0.07 µg/L, and the relative standard deviations ranged from 0.8% to 1.2%. The accuracy of Tl, Cd and Pb determination was checked by analyzing two certified reference materials. The results demonstrate that trace Tl, Cd and Pb in the samples can be accurately determined. The sequential extraction results revealed that the percent contents of Tl, Cd and Pb in exchangeable, reducible and oxidizable fractions in pyrite cinder are different from those in pyrite and in pyrite cinder. Tl, Cd and Pb mostly are distributed in residual fraction. Therefore, the mobility of metals in pyrite is higher than that in pyrite cinder. Although distributions of Tl, Cd and Pb in the non-residual fraction are not dominant in pyrite cinder, the total concentrations of them could not be ignored. Consequently, attention must be paid to the risk of potential pollution by pyrite cinder.

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Validation of an inductively coupled plasma mass spectrometry (ICP-MS) method for the determination of cerium, strontium, and titanium in ceramic materials used in radiological dispersal devices (RDDs)

Cited by 65 publications

References 10 publications

Catalyst Deactivation and Regeneration Processes in Biogas Tri-Reforming Process. The Effect of Hydrogen Sulfide Addition

Catalyst Deactivation and Regeneration Processes in Biogas Tri-Reforming Process. The Effect of Hydrogen Sulfide Addition

Adsorptive Stripping Voltammetric Determination of Nanomolar Concentration of Cerium(III) at a Carbon Paste Electrode Modified by N′‐[(2‐Hydroxyphenyl)Methylidene]‐2‐Furohydrazide

Speciation analysis of metals (Tl, Cd and Pb) in Tl-containing pyrite and its cinder from Yunfu Mine, China, by ICP-MS with sequential extraction

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