Distribution of uranium in Japanese river waters determined with inductively coupled plasma mass spectrometry

Somboon, Siriprapa; Inoue, Kazuaki; Fukushi, Masahiro; Tsuruoka, Hiroshi; Shimizu, Hideo; Kasar, Sharayu; Arae, Hideki; Kávási, Norbert; Sahoo, Sarata Kumar

doi:10.1007/s10967-018-6176-7

Cited by 12 publications

(3 citation statements)

References 23 publications

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“…Different instrumental techniques enable uranium determination in environmental samples. Suitable techniques for this purpose are, for example inductively coupled plasma optical emission spectrometry (ICP-OES), 12,13 inductively coupled plasma optical emission spectrometry (ICP-MS), [14][15][16] spectrophotometry, 17,18 fluorometry, 19 gamma-ray spectroscopy 20 or accelerator mass spectrometry. 21 However, each of them has limitations which hamper their use, e.g.…”

mentioning

confidence: 99%

Ultrasensitive Sensor for Uranium Monitoring in Water Ecosystems

Tyszczuk‐Rotko

Jędruchniewicz

2019

J. Electrochem. Soc.

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In the present paper, sensor based on the integrated three-electrode screen-printed system with in situ plated lead film working electrode (SPCE/PbF) was fabricated, and its microscopic and electrochemical characteristics were investigated. For the first time, a new supporting electrolyte composition (CH 3 COONH 4 , CH 3 COOH and NH 4 Cl of pH = 5.9 ± 0.1) has been proposed in order to improve electrochemical response of SPCE/PbF toward U(VI) determination. The differential pulse adsorptive stripping voltammetric (DPAdSV) signal of U(VI) increased linearly from 0.1 to 10 nmol L −1 with limit of detection of 0.019 nmol L −1 and sensitivity of 0.97 ± 0.00015 μA/nmol L −1 . The applicability of the SPCE/PbF for trace concentrations of U(VI) in water samples with the use of resin in order minimalize the influence of organic matrix was successfully demonstrated.

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confidence: 99%

Ultrasensitive Sensor for Uranium Monitoring in Water Ecosystems

Tyszczuk‐Rotko

Jędruchniewicz

2019

J. Electrochem. Soc.

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“…and refractory elements (Pu, U isotopes etc.) are very low in comparison because the primary concrete containment system mounted at the Fukushima Daichi reactors and the reactor pressure vessels were not damaged significantly by hydrogen explosions 20–22 . The 90 Sr (and 89 Sr) is a pure beta emitter radionuclide and beta particles have continuous spectrum unlike gamma rays therefore efficient separation of interfering beta emitter radionuclides is crucial before 90 Sr measurement with radiometric instruments (every fission product is a beta emitter as well as gamma emitter except 90 Sr and 89 Sr).…”

Section: Discussionmentioning

confidence: 99%

Accurate and precise determination of 90Sr at femtogram level in IAEA proficiency test using Thermal Ionization Mass Spectrometry

Kávási

Sahoo

Arae

et al. 2019

Sci Rep

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A novel method for the determination of ultra-trace level 90Sr has been recently developed applying thermal ionization mass spectrometry (TIMS). The method includes the chemical separation of Zr (isobaric interference of 90Zr) from the samples followed by determination of 90Sr/88Sr abundance sensitivity (2.1 × 10−10). The analytical performance of this method was assessed in the IAEA-TEL 2017-3 worldwide open proficiency test. For 90Sr determination, tap water and milk powder samples were distributed amongst the participant laboratories with reference values of 11.2 ± 0.3 Bq kg−1 (2.2 ± 0.1 fg g−1) and 99.9 ± 5.0 Bq kg−1 (19.5 ± 1.0 fg g−1), respectively. The stable Sr concentrations were 39.4 ± 0.9 ng g−1 and 2.5 ± 0.1 µg g−1 while the 90Sr/88Sr isotope ratios were 6.47 ± 0.17 × 10−8 and 9.04 ± 0.45 × 10−9 in the tap water and milk powder samples, respectively. For TIMS measurement, 50 mL water and 1 g milk powder samples were taken for analysis. This TIMS method demonstrated an impressive accuracy (relative bias of 4.2% and −2.1%, respectively) and precision (relative combined uncertainty of 4.1% and 7.6%, respectively) when compared with radiometric techniques. For the first time in the history of inorganic mass-spectrometry, 90Sr analysis using a TIMS instrument is confirmed by an independent proficiency test.

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“…Although the uranium concentration in seawater is generally stable worldwide at ~3.2 ng mL −1 [ 9 ], in Japanese river water, it falls within the range of ~0.1–600 pg mL −1 [ 10 , 11 , 12 ], and changes with the tide in brackish water. Moreover, although the behavior of uranium close to the estuary is complex, the uranium concentration generally correlates with the salinity level [ 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

X-ray-Fluorescence-Based Screening Method for Uranium in Contaminated Brackish Water Using Graphene Oxide Nanosheets

et al. 2023

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In the event of uranium release into the environment due to an accident, confirming the presence of uranium contamination is difficult because uranium is a naturally occurring element. In this study, we developed a method based on X-ray fluorescence (XRF) for the facile screening of uranium in brackish water samples in the event of an accident in a coastal area. Graphene oxide nanosheets were added to uncontaminated brackish water sampled from different sites to adsorb the uranium present in the samples, if any. The graphene oxide nanosheets were then collected using a membrane filter and analyzed using XRF. The results revealed that the signal intensity of the U Lα peak was proportional to the salinity. Hence, uranium contamination could be confirmed when the intensity of the U Lα peak was significantly greater than that derived from the background uranium content, as estimated from the salinity value. Thus, in the event of an accident, the salinity of the collected brackish water should be measured, and XRF analysis should be performed using our developed method. This method is useful for screening brackish water for uranium contamination.

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Distribution of uranium in Japanese river waters determined with inductively coupled plasma mass spectrometry

Cited by 12 publications

References 23 publications

Ultrasensitive Sensor for Uranium Monitoring in Water Ecosystems

Ultrasensitive Sensor for Uranium Monitoring in Water Ecosystems

Accurate and precise determination of 90Sr at femtogram level in IAEA proficiency test using Thermal Ionization Mass Spectrometry

X-ray-Fluorescence-Based Screening Method for Uranium in Contaminated Brackish Water Using Graphene Oxide Nanosheets

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