Determination of rare earth elements and other trace elements (Y, Mn, Co, Cr) in seawater using Tm addition and Mg(OH)(2) co-precipitation

Type Article
Date 2011-07
Language English
Author(s) Freslon Nicolas1, 2, 3, Bayon Germain1, Birot Dominique1, Bollinger Claire2, 3, Barrat Jean-Alix2, 3
Affiliation(s) 1 : IFREMER, Dept Geosci Marines, F-29280 Plouzane, France
2 : Univ Europeenne Bretagne, F-35000 Rennes, France
3 : Univ Brest, IUEM, CNRS UMR6538, F-29280 Plouzane, France
Source Talanta (0039-9140) (Elsevier Science Bv), 2011-07 , Vol. 85 , N. 1 , P. 582-587
DOI 10.1016/j.talanta.2011.04.023
WOS© Times Cited 75
Keyword(s) Trace elements, Rare earth elements (REE), Seawater, Mg(OH)(2) co-precipitation, ICP-MS, Thulium
Abstract This paper reports on a novel procedure for determining trace element abundances (REE and Y, Cr, Mn, Co) in seawater by inductively coupled plasma sector field mass spectrometry (ICP-SFMS). The procedure uses a combination of pre-concentration using co-precipitation onto magnesium hydroxides and addition of thulium spike. The validity of the method was assessed onto 25 ml volumes of certified reference materials (NASS- and CASS-4) and in house seawater standard. Procedural blanks were determined by applying the same procedure to aliquots of seawater previously depleted in trace elements by successive Mg(OH)(2) co-precipitations, yielding estimated contributions to the studied samples better than 1.1% for all elements, with the exception of Cr (<3.3%) and Co (up to 8%). The reproducibility of the method over the six month duration of the study was smaller than 11% RSD for all the studied elements. Results obtained for NASS-5 and CASS-4 agree well with published working values for trace elements. (C) 2011 Elsevier B.V. All rights reserved.
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