Focus on sulfur count rates along marine sediment cores acquired by XRF Core Scanner

Type Article
Date 2016-09
Language English
Author(s) Cheron Sandrine1, Etoubleau Joel1, Bayon Germain1, Garziglia Sebastien1, Boissier AudreyORCID1
Affiliation(s) 1 : IFREMER, Unite Geosci Marines, Ctr Brest, F-29280 Plouzane, France.
Source X-ray Spectrometry (0049-8246) (Wiley-blackwell), 2016-09 , Vol. 45 , N. 5 , P. 288-298
DOI 10.1002/xrs.2704
WOS© Times Cited 4
Abstract The aim of this study is to investigate the information provided by sulfur count rates obtained by X-ray fluorescence core scanner (XRF-CS) along sedimentary records. The analysis of two marine sediment cores from the Niger Delta margin shows that XRF-CS sulfur count rates obtained at the surface of split core sections with XRF-CS correlate with both direct quantitative pyrite concentrations, as inferred from X-ray powder diffraction (XRD) and sulfur determination by wavelength dispersive X-ray fluorescence (WD-XRF) spectrometry, and total dissolved sulfide (TDS) contents in the sediment pore water. These findings demonstrate the potential of XRF-CS for providing continuous profiles of pyrite distribution along split sections of sediment cores. The potential of XRF-CS to detect TDS pore water enrichments in marine sediment records, even a long time after sediment recovery, will be further discussed.
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