Determination of uranium and thorium in complex samples using chromatographic separation, ICP-MS and spectrophotometric detection

Rožmarić, Martina; Ivšić, Astrid Gojmerac; Grahek, Željko

doi:10.1016/j.talanta.2009.06.078

Cited by 72 publications

(25 citation statements)

References 39 publications

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“…A recent review [15] highlights a wide range of sample preparation strategies for Th and U determination. One study [16] has examined the utilization of various resins, including UTEVA (Eichrom), TRU (Eichrom), and AMBERLITE CG-400 (Sigma-Aldrich) for the separation of Th and U in natural samples. Furthermore, Grinberg and coworkers developed a sample preparation method for the analysis of lead using the UTEVA resin that achieved detection limits of 1.5 pg Th/g lead and 0.5 pg U/g lead [17].…”

Section: Introductionmentioning

confidence: 99%

A novel assay method for the trace determination of Th and U in copper and lead using inductively coupled plasma mass spectrometry

LaFerriere

Maiti

Arnquist

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

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a b s t r a c tThis study describes a novel sample preparation and assay method developed, primarily in support of the MAJORANA DEMONSTRATOR neutrinoless double-beta decay experiment, for the determination of extremely low levels of Th and U in copper and lead shielding components. Meticulously clean sample preparation methods combined with anion exchange separations for analyte pre-concentration and matrix removal were developed. Quantification was performed by isotope dilution inductively coupled plasma mass spectrometry. Detection limits of 0.0084 pg 232 Th/g (0.034 mBq 232 Th/kg) and 0.0106 pg 238 U/g (0.131 mBq 238 U/kg) were determined for copper, while detection limits of 0.23 pg 232 Th/g (0.94 mBq 232 Th/kg) and 0.46 pg 238 U/g (5.7 mBq 238 U/kg) were achieved for lead. These methods allow the Majorana Collaboration to accurately assay detector components and ensure that the experiment's stringent radiopurity requirements are met.

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Section: Introductionmentioning

confidence: 99%

A novel assay method for the trace determination of Th and U in copper and lead using inductively coupled plasma mass spectrometry

LaFerriere

Maiti

Arnquist

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

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“…Additionally, due to mass spectrometer that can separate according to the mass/ charge ratio, the numbers of sample pre-treatment steps are greatly reduced [60,61]. Isotopic determination at trace and ultra-trace levels is increasing interest for environmental monitoring, nuclear safeguards and nuclear forensic studies [54,55,62]. Consequently, the development of methods and techniques is increasingly sensitive to the determination of isotopes in different materials that are being proposed [54,55].…”

Section: Inductively Coupled Plasma Mass Spectrometry (Icp-ms)mentioning

confidence: 99%

An overview of spectrometric techniques and sample preparation for the determination of impurities in uranium nuclear fuel grade

Souza

Cotrim

Pires

2013

Microchemical Journal

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“…ICP-MS is a widespread technique that has attracted much attention in the measurement of uranium 14) , although, little difficulty is experienced in the direct analysis of environmental samples (water) under the special condition, due to the very low concentration of uranium in the presence of interfering ions. One way to overcome this is to dissolve the samples in order to preconcentrate samples and analyzes those using different analytical instruments.…”

Section: Introductionmentioning

confidence: 99%

Flotation-Assisted Homogeneous Liquid-Liquid Microextraction for Trace Determination of Uranium in Water Samples by Icp-MS

Veyseh

Ниази

2017

J. Chil. Chem. Soc.

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In this study, a novel method based on floatation assistance of homogeneous liquid-liquid microextraction (FA-HLLME), combined with inductively coupled plasma-mass spectroscopy (ICP-MS) was proposed, for the determination of trace uranium in environmental water samples. As one of the miniaturized separation and extraction techniques, homogenous liquid-liquid microextraction (HLLME) has been widely applied in the field of environmental monitoring and assessment. 1,2-pyridylazo-2-naphthol (PAN) was used as the complexing agent while toluene and methanol were selected as the extraction and homogeneous solvents, respectively. The factors that influenced the extraction efficiency for uranium determination (including pH, extraction and homogeneous solvents, concentration of PAN and NaCl, extraction time) were studied statistically. Under optimum conditions (pH=7.0, 100 mL toluene, 500 mL methanol, 6.4×10-5 mol L -1 PAN, 1.5 mol L -1 NaCl and 60 sec of extraction time), the linear dynamic range for uranium determination was 1.0-500.0 ng L -1 (R 2 =0.9995), with a corresponding limit of detection (LOD) of was 0.27 ng L , n=9) was 1.13%, with a corresponding enrichment factor of 360 for uranium extraction. The proposed method was successfully applied for the determination of uranium in different water samples.

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Determination of uranium and thorium in complex samples using chromatographic separation, ICP-MS and spectrophotometric detection

Cited by 72 publications

References 39 publications

A novel assay method for the trace determination of Th and U in copper and lead using inductively coupled plasma mass spectrometry

A novel assay method for the trace determination of Th and U in copper and lead using inductively coupled plasma mass spectrometry

An overview of spectrometric techniques and sample preparation for the determination of impurities in uranium nuclear fuel grade

Flotation-Assisted Homogeneous Liquid-Liquid Microextraction for Trace Determination of Uranium in Water Samples by Icp-MS

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