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Development of a carbonate crust on alkaline nuclear waste sludge at the Hanford site.

Journal of hazardous materials

Page JS, Reynolds JG, Ely TM, Cooke GA.
PMID: 28850915
J Hazard Mater. 2018 Jan 15;342:375-382. doi: 10.1016/j.jhazmat.2017.08.033. Epub 2017 Aug 18.

Hard crusts on aging plutonium production waste have hindered the remediation of the Hanford Site in southeastern Washington, USA. In this study, samples were analyzed to determine the cause of a hard crust that developed on the highly radioactive...

Sensitive redox speciation of iron, neptunium, and plutonium by capillary electrophoresis hyphenated to inductively coupled plasma sector field mass spectrometry.

Analytical chemistry

Graser CH, Banik NL, Bender KA, Lagos M, Marquardt CM, Marsac R, Montoya V, Geckeis H.
PMID: 26333389
Anal Chem. 2015 Oct 06;87(19):9786-94. doi: 10.1021/acs.analchem.5b02051. Epub 2015 Sep 11.

The long-term safety assessment for nuclear waste repositories requires a detailed understanding of actinide (geo)chemistry. Advanced analytical tools are required to gain insight into actinide speciation in a given system. The geochemical conditions in the vicinity of a nuclear...

Plutonium age dating (production date measurement) by inductively coupled plasma mass spectrometry.

Journal of radioanalytical and nuclear chemistry

Varga Z, Nicholl A, Wallenius M, Mayer K.
PMID: 27003957
J Radioanal Nucl Chem. 2016;307:1919-1926. doi: 10.1007/s10967-015-4418-5. Epub 2015 Sep 04.

This paper describes rapid methods for the determination of the production date (age dating) of plutonium (Pu) materials by inductively coupled plasma mass spectrometry (ICP-MS) for nuclear forensic and safeguards purposes. One of the presented methods is a rapid,...

Is Octavalent Pu(VIII) Possible? Mapping the Plutonium Oxyfluoride Series PuO(n)F(8-2n) (n = 0-4).

Inorganic chemistry

Huang W, Pyykkö P, Li J.
PMID: 26309065
Inorg Chem. 2015 Sep 08;54(17):8825-31. doi: 10.1021/acs.inorgchem.5b01540. Epub 2015 Aug 26.

While the oxidation state Pu(VIII) is shown to be less stable than Pu(V) in the PuO4 molecule, it is not clear if the more electronegative fluorine can help to stabilize Pu(VIII). Our calculations on PuO(n)F(8-2n) (n = 0-4) molecules...

A novel fast-neutron detector concept for energy-selective imaging and imaging spectroscopy.

The Review of scientific instruments

Cortesi M, Dangendorf V, Zboray R, Prasser HM.
PMID: 25085132
Rev Sci Instrum. 2014 Jul;85(7):073305. doi: 10.1063/1.4890392.

We present and discuss the operational principle of a new fast-neutron detector concept suitable for either energy-selective imaging or for imaging spectroscopy. The detector is comprised of a series of energy-selective stacks of converter foils immersed in a noble-gas...

Complexation Behavior of the Tri-n-butyl Phosphate Ligand with Pu(IV) and Zr(IV): A Computational Study.

The journal of physical chemistry. A

Gopakumar G, Sreenivasulu B, Suresh A, Brahmmananda Rao CV, Sivaraman N, Joseph M, Anoop A.
PMID: 27248966
J Phys Chem A. 2016 Jun 23;120(24):4201-10. doi: 10.1021/acs.jpca.6b02668. Epub 2016 Jun 10.

Tri-n-butyl phosphate (TBP), used as the extractant in nuclear fuel reprocessing, shows superior extraction abilities for Pu(IV) over a large number of fission products including Zr(IV). We have applied density functional theory (DFT) calculations to explain this selectivity by...

Mayak Worker Dosimetry System (MWDS-2013): Phase I-Quality Assurance of Organ Doses and Excretion Rates From Internal Exposures of Plutonium-239 for the Mayak Worker Cohort.

Radiation protection dosimetry

Dorrian MD, Birchall A, Vostrotin V.
PMID: 27325843
Radiat Prot Dosimetry. 2017 Nov 01;176(1):166-181. doi: 10.1093/rpd/ncw137.

The calculation of reliable and realistic doses for use in epidemiological studies for the quantification of risk from internal exposure to radioactive material is fundamental to the development of advice, guidance and regulations for the control and use of...

Identification of the Formal +2 Oxidation State of Plutonium: Synthesis and Characterization of {Pu.

Journal of the American Chemical Society

Windorff CJ, Chen GP, Cross JN, Evans WJ, Furche F, Gaunt AJ, Janicke MT, Kozimor SA, Scott BL.
PMID: 28235179
J Am Chem Soc. 2017 Mar 22;139(11):3970-3973. doi: 10.1021/jacs.7b00706. Epub 2017 Mar 13.

Over 70 years of chemical investigations have shown that plutonium exhibits some of the most complicated chemistry in the periodic table. Six Pu oxidation states have been unambiguously confirmed (0 and +3 to +7), and four different oxidation states...

Covalency-Driven Dimerization of Plutonium(IV) in a Hydroxamate Complex.

Inorganic chemistry

Silver MA, Cary SK, Stritzinger JT, Parker TG, Maron L, Albrecht-Schmitt TE.
PMID: 27228095
Inorg Chem. 2016 Jun 06;55(11):5092-4. doi: 10.1021/acs.inorgchem.6b00340. Epub 2016 May 26.

The reaction of formohydroxamic acid [NH(OH)CHO, FHA] with Pu(III) should result in stabilization of the trivalent oxidation state. However, slow oxidation to Pu(IV) occurs, which leads to formation of the dimeric plutonium(IV) formohydroxamate complex Pu2(FHA)8. In addition to being...

Threshold for Radon-Induced Lung Cancer From Inhaled Plutonium Data.

Dose-response : a publication of International Hormesis Society

Cuttler JM, Sanders CL.
PMID: 26740812
Dose Response. 2015 Nov 02;13(4):1559325815615102. doi: 10.1177/1559325815615102. eCollection 2015.

Cohen's lung cancer mortality data, from his test of the LNT theory, do not extend to the no observed adverse effects level (NOAEL) above which inhaled radon decay products begin to induce excess lung cancer mortality. Since there is...

Sorption and redox speciation of plutonium at the illite surface under highly saline conditions.

Journal of colloid and interface science

Marsac R, Banik NL, Lützenkirchen J, Diascorn A, Bender K, Marquardt CM, Geckeis H.
PMID: 27643471
J Colloid Interface Sci. 2017 Jan 01;485:59-64. doi: 10.1016/j.jcis.2016.09.013. Epub 2016 Sep 13.

Natural groundwater may contain high salt concentrations, such as those occurring at several potential deep geological nuclear waste repository sites. Actinide sorption to clays (e.g. illite) under saline conditions has, however, been rarely studied. Furthermore, both illite surface and...

Study on the rate of plutonium vertical migration in various soil types of Lublin region (Eastern Poland).

Journal of radioanalytical and nuclear chemistry

Orzeł J, Komosa A.
PMID: 26224953
J Radioanal Nucl Chem. 2014;299(1):643-649. doi: 10.1007/s10967-013-2774-6. Epub 2013 Oct 11.

Soil contamination level with

Showing 1 to 12 of 728 entries