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Intercalibration of selected anthropogenic radionuclides for the GEOTRACES Program
Author(s) -
Kenna Timothy C.,
Masqué Pere,
Luís Mas José,
CamaraMor Patricia,
Chamizo Elena,
Scholten Jan,
Eriksson Mats,
SanchezCabeza JoanAlbert,
Gastaud Janine,
Levy Isabelle,
Herrmann Jürgen,
Lindahl Patric,
Hong GiHoon,
Nielsen Sven
Publication year - 2012
Publication title -
limnology and oceanography: methods
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.898
H-Index - 72
ISSN - 1541-5856
DOI - 10.4319/lom.2012.10.590
Subject(s) - geotraces , radionuclide , seawater , environmental science , inductively coupled plasma mass spectrometry , environmental chemistry , isotope , plutonium , particulates , oceanography , radiochemistry , mass spectrometry , chemistry , geology , physics , organic chemistry , chromatography , quantum mechanics
As part of the GEOTRACES Program, six laboratories participated in an intercalibration exercise on several anthropogenic radionuclides of interest. The effort was successful for 239,240 Pu activity, 240 Pu/ 239 Pu isotope ratio, and 137 Cs activity measured in filtered seawater samples from the Bermuda Atlantic Time Series station (BATS) and a site on the continental slope of the Northeastern U.S. A limited number of analyses were reported for 237 Np, 241 Am, 90 Sr, and 238 Pu in filtered seawater. Intercalibration of any of the isotopes of interest in filtered particulate matter was unsuccessful due to insufficient size of the samples distributed. Methods used were based on traditional radio‐counting techniques and inductively coupled plasma mass spectrometry (ICP‐MS). Although the majority of analyses were performed on samples ≥ 60 L, one lab demonstrated the ability to analyze several of the anthropogenic radionuclides on 10–20 L sample volumes using ICP‐MS.