Multi‐Element Determination of Trace Elements in Natural Water Reference Materials by ICP‐SFMS after Tm Addition and Iron Co‐precipitation

Bayon, Germain; Birot, Dominique; Bollinger, Claire; Barrat, Jean‐Alix

doi:10.1111/j.1751-908x.2010.00064.x

Cited by 48 publications

(42 citation statements)

References 29 publications

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“…The thulium (Tm) addition method, in which the single REE, Tm, is added to samples to produce an artificial positive Tm anomaly (Bayon et al . , Freslon et al . ), permits REE yield to be assessed.…”

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confidence: 99%

A Robust Procedure for High‐Precision Determination of Rare Earth Element Concentrations in Seawater

Zheng

Yang

Henderson

2014

Geostandard Geoanalytic Res

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This study reports a robust procedure that permits precise measurement of all fourteen naturally occurring rare earth element (REE) concentrations, present at ng kg−1 to sub ng kg−1 levels, in ~ 100 ml seawater. This procedure is simple and can be routinely applied to measure seawater REEs with relatively high sample throughput. The procedure involves addition of a 142Ce‐145Nd‐171Yb‐enriched spike mixture, iron co‐precipitation, REE purification with chromatographic separation and the use of a magnetic‐sector‐field ICP‐MS (Element 2) coupled with a desolvating sample introduction system (Aridus 1). Critical steps of the procedure, including co‐precipitation pH and matrix removal, have been optimised through a set of experiments described here. The accuracy of the new procedure was assessed against a gravimetric mixture of REEs, and the precision was demonstrated by repeated measurement of two well‐mixed natural seawaters. Repeated analyses of these seawater reference materials (RMs), using ~ 100 ml seawater for each aliquot, indicate precision of 3% (1s) for the REEs. Measured REE concentrations of two uncertified seawater RMs (CASS‐4 and NASS‐5) are consistent with published values, and REE concentrations of the GEOTRACES intercalibration samples show good agreement with those reported by other participant laboratories. REE concentrations for other intercalibration samples (SAFe and Arctic PS70) are also reported.

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confidence: 99%

A Robust Procedure for High‐Precision Determination of Rare Earth Element Concentrations in Seawater

Zheng

Yang

Henderson

2014

Geostandard Geoanalytic Res

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“…After filtration, seawater samples were acidified to ~ pH 2 162 with ultra-pure twice sub-boiled HNO 3 , prior to addition of Tm spike. The REE were then 163 extracted from the filtered samples by ferric-hydroxide co-precipitation, after addition of NH 4 164 (Bayon et al, 2011). For Nd isotope measurements, between ~ 5 and 20 l of seawater were 165 filtered and acidified to ~ pH 2.…”

Section: Hydrography Of the Gulf Of Guinea 135mentioning

confidence: 99%

Evidence for intense REE scavenging at cold seeps from the Niger Delta margin

Bayon

Birot

Ruffine

et al. 2011

Earth and Planetary Science Letters

126

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International audienceFor many trace elements, continental margins are the location of intense exchange processes between sediment and seawater, which control their distribution in the water column, but have yet to be fully understood. In this study, we have investigated the impact of fluid seepage at cold seeps on the marine cycle of neodymium. We determined dissolved and total dissolvable (TD) concentrations for REE and well-established tracers of fluid seepage (CH4, TDFe, TDMn), and Nd isotopic compositions in seawater samples collected above cold seeps and a reference site (i.e. away from any fluid venting area) from the Niger Delta margin. We also analyzed cold seep authigenic phases and various core-top sediment fractions (pore water, detrital component, easily leachable phases, uncleaned foraminifera) recovered near the hydrocast stations. Methane, TDFe and TDMn concentrations clearly indicate active fluid venting at the studied seeps, with plumes rising up to about 100 m above the seafloor. Depth profiles show pronounced REE enrichments in the non-filtered samples (TD concentrations) within plumes, whereas filtered samples (dissolved concentrations) exhibit slight REE depletion in plumes relative to the overlying water column and display typical seawater REE patterns. These results suggest that the net flux of REE emitted into seawater at cold seeps is controlled by the presence of particulate phases, most probably Fe-Mn oxyhydroxides associated to resuspended sediments. At the reference site, however, our data reveal significant enrichment for dissolved REE in bottom waters, that clearly relates to diffusive benthic fluxes from surface sediments. Neodymium isotopic ratios measured in the water column range from εNd ~−15.7 to − 10.4. Evidence that the εNd values for Antarctic Intermediate waters (AAIW) differed from those reported for the same water mass at open ocean settings shows that sediment/water interactions take place in the Gulf of Guinea. At each site, however, the bottom water εNd signature generally differs from that for cold seep minerals, easily leachable sediment phases, and detrital fractions from local sediments, ruling out the possibility that seepage of methane-rich fluids and sediment dissolution act as a substantial source of dissolved Nd to seawater in the Gulf of Guinea. Taken together, our data hence suggest that co-precipitation of Fe-Mn oxyhydroxide phases in sub-surface sediments leads to quantitative scavenging of dissolved REE at cold seeps, preventing their emission into bottom waters. Most probably, it is likely that diffusion from suboxic surface sediments dominates the exchange processes affecting the marine Nd cycle at the Niger Delta margin

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“…Natural river water reference materials are widely used in order to verify routine water analyses by geochemists and hydrogeologists (Tosiani et al 2004, Lawrence et al 2006, Bayon et al 2010, Birke et al 2010). Among these reference materials, the Ottawa River water SLRS, prepared by the Canadian National Research Council (NRC-CNRC Canada), has been used by ten French geoscience laboratories.…”

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confidence: 99%

A Compilation of Silicon, Rare Earth Element and Twenty‐One other Trace Element Concentrations in the Natural River Water Reference Material SLRS‐5 (NRC‐CNRC)

Yeghicheyan

Bossy

Coz

et al. 2013

Geostandard Geoanalytic Res

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International audienceThe natural river water certified reference material SLRS-5 (NRC-CNRC) was routinely analysed in this study for major and trace elements by ten French laboratories. Most of the measurements were made using ICP-MS. Because no certified values are assigned by NRC-CNRC for silicon and 35 trace element concentrations (rare earth elements, Ag, B, Bi, Cs, Ga, Ge, Li, Nb, P, Rb, Rh, Re, S, Sc, Sn, Th, Ti, Tl, W, Y and Zr), or for isotopic ratios, we provide a compilation of the concentrations and related uncertainties obtained by the participating laboratories. Strontium isotopic ratios are also given. Le matériau de référence certifié d'eau de rivière naturelle SLRS-5 (NRC-CNRC) est analysé régulièrement comme contrôle qualité par dix laboratoires français étudiant les éléments majeurs et en trace dans les solutions naturelles. La plupart des mesures sont réalisées par ICP-MS. Le silicium et 35 éléments en trace (terres rares, Ag, B, Bi, Cs, Ga, Ge, Li, Nb, P, Rb, Rh, Re, S, Sc, Sn, Th, Ti, Tl, W, Y et Zr) ne sont pas certifiés par NRC-CNRC. Aucun rapport isotopique n'est disponible. Nous proposons, pour ces éléments, des valeurs moyennes et leurs incertitudes associées obtenues par les différents laboratoires participants. Le rapport isotopique de Sr est aussi mesuré

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Multi‐Element Determination of Trace Elements in Natural Water Reference Materials by ICP‐SFMS after Tm Addition and Iron Co‐precipitation

Cited by 48 publications

References 29 publications

A Robust Procedure for High‐Precision Determination of Rare Earth Element Concentrations in Seawater

A Robust Procedure for High‐Precision Determination of Rare Earth Element Concentrations in Seawater

Evidence for intense REE scavenging at cold seeps from the Niger Delta margin

A Compilation of Silicon, Rare Earth Element and Twenty‐One other Trace Element Concentrations in the Natural River Water Reference Material SLRS‐5 (NRC‐CNRC)

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