Technetium-99 (99Tc) transformations in aerobic soils following experimental addition of the radioactive anion 99TcO4-

The data comprise measurements of the ‘soluble’, ‘adsorbed’ and ‘organically bound’ 99Tc concentrations in a diverse set of soils following experimental addition of 99TcO4- and incubation in the laboratory under controlled temperature conditions for 897 days.

The long term behaviour of 99Tc in aerobic soils was studied by conducting a laboratory-based experiment in which a set of 20 topsoils from central England with contrasting properties (e.g. pH, organic matter content, land use) were contaminated with 99TcO4- and incubated in the dark, in a moist but aerobic condition, at a temperature of 10oC for 2.5 yr. The physico-chemical transformations of 99Tc in each soil microcosm were periodically monitored by means of a three-step sequential extraction procedure conducted on subsamples of incubated soil.

The resulting dataset enabled quantification of the kinetics of 99Tc transformation in aerobic soils as a function of soil properties and land uses (arable, grassland and moorland/woodland). The data will be useful in developing models of long-term 99Tc bioavailability in aerobic soils under temperate conditions.

Full details about this dataset can be found at https://doi.org/10.5285/4622f906-e28a-4210-aa03-d2e4169b1be8

Identification info

Metadata Language: English (en)

Character set: utf8

Dataset Reference Date (): 2019-08-27

Identifier: https://catalogue.ceh.ac.uk/id/4622f906-e28a-4210-aa03-d2e4169b1be8

Identifier: doi: / 10.5285/4622f906-e28a-4210-aa03-d2e4169b1be8

Other citation details: Izquierdo, M., Bailey, E., Crout, N. , Sanders, H. , Young, S., Shaw, G. (2019). Technetium-99 (99Tc) transformations in aerobic soils following experimental addition of the radioactive anion 99TcO4-. NERC Environmental Information Data Centre 10.5285/4622f906-e28a-4210-aa03-d2e4169b1be8

University of Nottingham - Izquierdo, M.

University of Nottingham - Bailey, E.

University of Nottingham - Crout, N.

University of Nottingham - Sanders, H.

University of Nottingham - Young, S.

University of Nottingham - Shaw, G.

University of Nottingham - Prof. George Shaw

NERC EDS Environmental Information Data Centre

NERC Environmental Information Data Centre

GEMET - INSPIRE themes, version 1.0 ()

Soil

Keywords

Soil
Radioecology
Technetium
Chernobyl
Incubation
Aerobic soils

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Other constraints: © Natural Environment Research Council

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Other constraints: This resource is available under the terms of the Open Government Licence

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Other constraints: © University of Nottingham

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Other constraints: © Environment Agency

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Other constraints: If you reuse this data, you should cite: Izquierdo, M., Bailey, E., Crout, N. , Sanders, H. , Young, S., Shaw, G. (2019). Technetium-99 (99Tc) transformations in aerobic soils following experimental addition of the radioactive anion 99TcO4-. NERC Environmental Information Data Centre https://doi.org/10.5285/4622f906-e28a-4210-aa03-d2e4169b1be8

Spatial representation type: textTable

Distance: 1 urn:ogc:def:uom:EPSG::9001

Topic category

Environment

Begin date: 2014-11-01

End date: 2017-05-31

Code: WGS 84

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Report

Dataset Reference Date (): 2010-12-08

Statement: At each sampling time, a portion of ca. 4 g soil from each microcosm was subjected to a three-step sequential extraction procedure devised to quantify (i) the ‘soluble’ 99Tc, which was extracted with 0.01 M KNO3; (ii) the ‘specifically adsorbed’ 99Tc, extracted with 0.16 M KH2PO4; and (iii) the ‘organically bound’ 99Tc associated with humic and fulvic acids, dissolved with 10% tetra methyl ammonium hydroxide (TMAH) solution. Soil extracts were analysed using a Thermo Fisher Scientific iCAP-Q ICP-MS operating with a collision cell using He with kinetic energy discrimination. The Radioactive Standard NIST SRM 4288B (31.55 kBq g-1 of 99TcO4- in 0.001M KOH) was used for calibration.

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File identifier: 4622f906-e28a-4210-aa03-d2e4169b1be8 XML

Metadata Language: English (en)

Character set: ISO/IEC 8859-1 (also known as Latin 1)

Resource type: dataset

Hierarchy level name: dataset

Metadata Date: 2021-06-25T18:40:37

Metadata standard name: UK GEMINI

Metadata standard version: 2.3

Environmental Information Data Centre

Lancaster Environment Centre, Library Avenue, Bailrigg , Lancaster , LA1 4AP , UK

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