129I in soil and grass samples around a nuclear reprocessing plant

Doshi, G.R.; Joshi, S. N.; Pillai, K. Chandrasekara

doi:10.1007/bf02165065

Cited by 17 publications

(9 citation statements)

References 9 publications

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“…129 I, a key fission product, has been found in soil and grass samples surrounding a nuclear reprocessing plant and has been suggested to exist as a variety of iodine species, including IO 3 À [7,8]. Current interest in iodate can then be coupled with growing concerns of actinide migration in the environment and their relevance as long-term contributors to radioactive dose in nuclear waste repositories [9,10]. Therefore, it is important to evaluate the reactions of actinides with fission-product radionuclides, such as 129 I.…”

Section: Introductionmentioning

confidence: 99%

Intercalation of KCl into layered neptunyl and plutonyl iodates

Bean

Scott

Albrecht‐Schmitt

et al. 2004

Journal of Solid State Chemistry

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Section: Introductionmentioning

confidence: 99%

Intercalation of KCl into layered neptunyl and plutonyl iodates

Bean

Scott

Albrecht‐Schmitt

et al. 2004

Journal of Solid State Chemistry

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“…1,2 Of particular interest is how these elements might react with fission-product radionuclides, such as 129 I, or their derivatives. 3,4 In fact, iodine can exist in solution in both oxidized and reduced forms, i.e., IO 3and I -, and studies on the nature of 129 I in nuclear waste suggested the existence of iodate, IO 3 -. 2 Although the potential importance of low-soluble transuranium iodates for lanthanide/actinide separation was recognized about 50 years ago, we still lack a thorough understanding of their structural and spectroscopic properties.…”

Section: Introductionmentioning

confidence: 99%

“…The solid state chemistry of transuranium compounds has received considerably less attention than that of their uranium analogues owing to decreased availability and the highly specialized facilities needed to safely study long-lived α-emitters. However, understanding the behavior of the early transuranium elements is critical for assessing their environmental impact as long-term contributors to the radioactive dose in nuclear waste repositories. , Of particular interest is how these elements might react with fission-product radionuclides, such as 129 I, or their derivatives. , In fact, iodine can exist in solution in both oxidized and reduced forms, i.e., IO 3 - and I - , and studies on the nature of 129 I in nuclear waste suggested the existence of iodate, IO 3 - …”

Section: Introductionmentioning

confidence: 99%

Structural and Spectroscopic Trends in Actinyl Iodates of Uranium, Neptunium, and Plutonium

et al. 2003

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Two neptunyl(VI) iodates, NpO(2)(IO(3))(2)(H(2)O) (1) and NpO(2)(IO(3))(2).H(2)O (2), have been prepared from the aqueous reactions of Np(V) in HCl with KIO(4) or H(5)IO(6) at 180 degrees C and have been characterized by single crystal X-ray diffraction and Raman spectroscopy. Both compounds consist of two-dimensional arrangements of pentagonal bipyramidal [NpO(7)] polyhedra with axial neptunyl, NpO(2)(2+), dioxocations. In 1, the neptunium centers are bound in the equatorial plane by four bridging iodate anions and one terminal water molecule. The iodate anions link the [NpO(7)] units into corrugated sheets that interact with one another through intermolecular IO(3)(-)...IO(3)(-) interactions as also observed in UO(2)(IO(3))(2)(H(2)O). Compound 2 is isostructural with the recently reported PuO(2)(IO(3))(2).H(2)O, where oxygen atoms from bridging iodate anions occupy the five equatorial sites around the neptunyl moieties. The iodate anions occur as both mu(2)- and mu(3)-units and link the neptunyl polyhedra into sheets. Both types of iodate anions have their stereochemically active lone-pair of electrons aligned on one side of each layer creating a polar structure. Raman spectra of 1, UO(2)(IO(3))(2)(H(2)O), and PuO(2)(IO(3))(2).H(2)O show a sequential shift of the nu(1)(AnO(2)(2+)) stretch to lower wavenumber as the atomic number of the actinide is increased. Crystallographic data: 1, orthorhombic, space group Pcan, a = 7.684(2) A, b = 8.450(2) A, c = 12.493(3) A, Z = 4; 2, orthorhombic, space group Pna2(1), a = 7.314(1) A, b = 11.631(2) A, c = 9.449(2) A, Z = 4.

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“…12,13 Much attention has been focused on the environmental level of 129 I and the pathways linking radioiodine deposition in the environment and its transfer to the food chain via soil-grassmilk-human. [14][15][16][17][18][19][20][21][22][23][24] But up to now, no 129 I data have been reported in the environment of Denmark, which experiences the influence of radioactive discharges and fallout from many sources.…”

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confidence: 99%