In situ chemisorption of transuranics from seawater

Mann, Don R.; Surpreant, L.D.; Casso, Susan A.

doi:10.1016/0167-5087(84)90653-7

Cited by 40 publications

(19 citation statements)

References 5 publications

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“…Mann et al (1984) were the first to use MnO 2 impregnated filter cartridges connected in series for the extraction of transuranics from seawater. A filter cartridge was used to retain the particulate matter immediately before the two Mn-cartridges.…”

Section: Adsorption On Mno 2 Impregnated Cartridgesmentioning

confidence: 99%

A review of present techniques and methodological advances in analyzing 234Th in aquatic systems

et al. 2006

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The short-lived thorium isotope 234 Th (half-life 24.1 days) has been used as a tracer for a variety of transport processes in aquatic systems. Its use as a tracer of oceanic export via sinking particles has stimulated a rapidly increasing number of studies that require analyses of 234 Th in both marine and freshwater systems. The original 234 Th method is labour intensive.Thus, there has been a quest for simpler techniques that require smaller sample volumes.Here, we review current methodologies in the collection and analysis of 234 Th from the water column, discuss their individual strengths and weaknesses, and provide an outlook on possible further improvements and future challenges. Also included in this review are recommendations on calibration procedures and the production of standard reference materials as well as a flow chart designed to help researchers find the most appropriate 234 Th analytical technique for a specific aquatic regime and known sampling constraints.

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Section: Adsorption On Mno 2 Impregnated Cartridgesmentioning

confidence: 99%

A review of present techniques and methodological advances in analyzing 234Th in aquatic systems

et al. 2006

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“…The sampler enables processing of up to 4000 L of water in 3 hours [73], A very efficient separation of radionuclides from large water samples can be achieved by Mn0 2 impregnated filters. This technique is the preferred method for the pre-concentration from large volumes of water of very low concentrations of fallout radionuclides, particularly plutonium and americium (e.g., [74,75]). …”

Section: Methods For Direct Speciation Analysis Of Aerosolsmentioning

confidence: 99%

Speciation of Radionuclides in the Environment

Gunten

Beneš

1995

Radiochimica Acta

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Methods for the determination of the speciation of radionuclides in aerosols, in aquatic solutions, in sediments, soils and rocks are reviewed. At present, most of the results about speciation are deduced from model calculations, model experiments, and separation of species (forms) of radionuclides, e.g., by sequential extraction procedures. Methods of direct determination of speciation of radionuclides (e.g., by laser induced spectroscopy) are in general not yet sensitive enough for a measurement of the very low concentrations of radionuclides in the environment. The methodological part of this paper is followed by a review of the very abundant literature about speciation of important radionuclides in the environment, i.e., in the atmosphere, hydrosphere and lithosphère. The review does not include the biosphere. Literature up to spring 1993 is included (with a few more recent additions).

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“…It has been found that these filters are easy to handle and they have a high loading capacity and a very low radionuclide blank (13,14) .…”

Section: N Evangeliou Et Almentioning

confidence: 99%

Distribution of low-level natural radioactivity in a populated marine region of the easternMediterranean Sea

Evangeliou

Florou

Kritidis

2012

Radiation Protection Dosimetry

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The levels of natural radioactivity have been evaluated in the water column of an eastern Mediterranean region (Saronikos Gulf ), with respect to the relevant environmental parameters. A novel methodology was used for the determination of natural radionuclides, which substitutes the time-consuming radiochemical analysis, based on an in situ sample preconcentration using ion-selective manganese fibres placed on pumping systems. With regard to the results obtained,

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In situ chemisorption of transuranics from seawater

Cited by 40 publications

References 5 publications

A review of present techniques and methodological advances in analyzing 234Th in aquatic systems

A review of present techniques and methodological advances in analyzing 234Th in aquatic systems

Speciation of Radionuclides in the Environment

Distribution of low-level natural radioactivity in a populated marine region of the easternMediterranean Sea

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