129I in Arctic seawater

Keywords

Updated 2016-05-02

Anthropogenic 129I discharged from European reprocessing plants has widely dispersed in the Nordic waters including the Arctic. Due to the high solubility and long residence time of iodine in seawater, anthropogenic 129I has become an ideal oceanographic tracer for investigating transport pathways and the exchange of water masses.

This is not a National Implementation Plan (NIP) project

http://www.nrpa.no

Status: Ongoing
Project time span: 2005 -
Data collection: 2005 -
Data processing: 2005 -
Data reporting: 2005 -

Contact information

Contact person: Justin Gwynn
Address: Norwegian Radiation Protection Authority, Framsenteret, No-9296 Tromsø, Norway
Phone: +47 77750165
Email: on.aprn@nnywG.nitsuJ
Other project contacts: Xiaolin Hou, Risø National Laboratory, NUK-202, DK-4000, Roskilde, Denmark Michael Karcher, O.A.Sys – Ocean Atmosphere System GmbH, Hamburg, Germany and Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany

Parameters and Media

Parameter groups measured/observed/modelled

Radionuclides

Media sampled/studied/modelled

Additional information or further specification of types of data / information collected, species / tissues / organs sampled, etc.

Marine water samples

Geography

Regions studied: Radionuclides

Data availability

Are data archived or planned to be archived at an AMAP Thematic Data Centre?: no
References to key publications (or planned publications) and data reports: Speciation of 129I in Arctic seawater X.L. HOU, M.Y. LUO, Y.K. FAN, J. P. GWYNN, M. KARCHER, A. ALDAHAN AND G. POSSNERT http://goldschmidt.info/2011/abstracts/finalPDFs/1048.pdf

Samples/specimens archived in specimen banks?: No

Methods & Procedures

Procedures and methodology used for, e.g., sampling and sample storage, sample pretreatment, extraction and analysis, including which laboratories are involved, references to methods employed, etc.: A volume of 1 l of each sample was used for the chemical separation of iodine species. Iodide and iodate were separated using anion exchange chromatography. The separated iodine species, as well as total iodine were separated from the water matrix component and all interfering elements by solvent extraction and were then precipitated as AgI for measurement of 129I by accelerator mass spectrometry. The 127I of different species separated from each water sample was measured using inductively coupled plasma mass spectrometry. The analytical results on the concentrations of chemical species of 129I and 127I as well as 129I/127I ratios

Additional Information

Is this a bi- AND multi-lateral project (i.e. a project involving cooperation between different countries)?: Yes
Other institutes involved in the project: Risø National Laboratory, NUK-202, DK-4000, Roskilde, Denmark O.A.Sys – Ocean Atmosphere System GmbH, Hamburg, Germany Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany