Reliable Determination of Ge in Solid Environmental Samples Using a Chemical Preparation Procedure Developed for Si Isotopes and ICP-MS Analysis

Autor: Isabelle Basile-Doelsch, Abel Guihou, Bernard Angeletti, Jean-Dominique Meunier, Camille Delvigne
Přispěvatelé: Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE), Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), ANR project BIOSiSOL [ANR-14-CE01-002], French Agence Nationale de la Recherche through the Project EQUIPEX ASTER-CEREGE, Centre européen de recherche et d'enseignement de géosciences de l'environnement ( CEREGE ), Centre National de la Recherche Scientifique ( CNRS ) -Institut de Recherche pour le Développement ( IRD ) -Aix Marseille Université ( AMU ) -Collège de France ( CdF ) -Institut National de la Recherche Agronomique ( INRA ) -Institut national des sciences de l'Univers ( INSU - CNRS ), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Collège de France (CdF (institution))-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Collège de France (CdF)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Institut National de la Recherche Agronomique (INRA)
Rok vydání: 2017
Předmět:
Materials science
010504 meteorology & atmospheric sciences
Silicon
Analytical chemistry
chemistry.chemical_element
Nanotechnology
Germanium
010502 geochemistry & geophysics
01 natural sciences
[ SDE ] Environmental Sciences
cation‐exchange purification
Matrix (chemical analysis)
[CHIM.ANAL]Chemical Sciences/Analytical chemistry
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry
Geochemistry and Petrology
ICP-MS
cation exchange purification
soils
Inductively coupled plasma mass spectrometry
0105 earth and related environmental sciences
Detection limit
Isotope
plants
Geology
Repeatability
[ SDU.STU.GC ] Sciences of the Universe [physics]/Earth Sciences/Geochemistry
reference materials
sample digestion
germanium
chemistry
13. Climate action
[SDE]Environmental Sciences
[ CHIM.ANAL ] Chemical Sciences/Analytical chemistry
ICP‐MS
Mass fraction
Zdroj: Geostandards and Geoanalytical Research
Geostandards and Geoanalytical Research, 2018, 42 (1), pp.139-149. ⟨10.1111/ggr.12197⟩
Geostandards and Geoanalytical Research, Wiley, 2018, 42 (1), pp.139-149. 〈10.1111/ggr.12197〉
Geostandards and Geoanalytical Research, Wiley, 2018, 42 (1), pp.139-149. ⟨10.1111/ggr.12197⟩
ISSN: 1639-4488
1751-908X
Popis: International audience; Germanium (Ge) exists at trace levels in the Earth's crust and is a powerful geochemical tracer of the silicon (Si) cycle. This study proposes a simple and reliable method for determining Ge contents in environmental samples using ICP‐MS. As Si and Ge have very similar chemical properties, we investigated the applicability of the chemical preparation procedure developed for Si isotopes for the determination of Ge in environmental samples. Advantages of this procedure are as follows: (a) efficient removal of the matrix and main interferences affecting Ge determinations by ICP‐MS, (b) a low limit of detection (6 ng l−1), (c) relative repeatability of approximately 3% obtained on 74Ge and (d) robustness and accuracy based on agreement within errors with the published Ge values for rock reference materials (BHVO‐2, AGV‐2 and BCR‐2). This procedure allowed revision of the Ge values of three soil reference materials (1.67 ± 0.09 μg g−1, 2.41 ± 0.18 μg g−1, 1.89 ± 0.10 μg g−1 for GBW 07401, GBW 07404 and GBW 07407, respectively) and proposal of a value for the plant reference material ERM‐CD281 (70 ± 3 μg g−1). This method provides a convenient procedure for determining Ge mass fractions in environmental samples and opens the possibility of coupling two tracers of the Si biogeochemical cycle with a single measurement procedure.
Databáze: OpenAIRE
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