Identification

Title

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

Abstract

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

Resource type

dataset

Resource locator

https://data-package.ceh.ac.uk/data/4622f906-e28a-4210-aa03-d2e4169b1be8

name: Download the data

description: Download a copy of this data

function: download

https://data-package.ceh.ac.uk/sd/4622f906-e28a-4210-aa03-d2e4169b1be8.zip

name: Supporting information

description: Supporting information available to assist in re-use of this dataset

function: information

Unique resource identifier

code

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

codeSpace

doi:

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

environment

Keywords

Keyword set

keyword value

Soil

originating controlled vocabulary

title

GEMET - INSPIRE themes, version 1.0

reference date

date type

publication

effective date

2008-06-01

Keyword set

keyword value

Technetium

Chernobyl

Incubation

Aerobic soils

Geographic location

West bounding longitude

-1.66

East bounding longitude

-0.66

North bounding latitude

53.017

South bounding latitude

52.4

Temporal reference

Temporal extent

Begin position

2014-11-01

End position

2017-05-31

Dataset reference date

date type

publication

effective date

2019-08-27

Frequency of update

Quality and validity

Lineage

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.

Conformity

Conformity report

specification

title

Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

reference date

date type

publication

effective date

2010-12-08

degree

explanation

Data format

name of format

Comma-separated values (CSV)

version of format

Constraints related to access and use

Constraint set

Limitations on public access

Constraint set

Limitations on public access

Constraint set

Limitations on public access

Constraint set

Limitations on public access

Constraint set

Limitations on public access

Constraint set

Limitations on public access

Constraint set

Limitations on public access

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

publisher

Metadata on metadata

Metadata point of contact

organisation name

Environmental Information Data Centre

full postal address

Lancaster Environment Centre, Library Avenue, Bailrigg

Lancaster

LA1 4AP

email address

info@eidc.ac.uk

responsible party role

pointOfContact

Metadata date

2021-06-25T18:40:37

Metadata language

eng