Published September 2013 | Version v1
Journal article Metadata-only

Selenium coprecipitated with barite in marine sediments as a possible redox indicator

Creators

  • 1. Hiroshima Univ., Graduate School of Science, Higashi-Hiroshima, Hiroshima (Japan)
  • 2. Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Kanagawa (Japan)
  • 3. Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, Sayo, Hyogo (Japan)

Description

Micro X-ray fluorescence mapping and X-ray absorption near-edge structure spectra were successfully measured for selenium (Se) in barite formed in marine sediments, which showed that Se(IV) was mainly found in the barite. The results showed that (1) Se in natural barite can be detected by µ-XRF-XAFS, (2) the presence of Se(IV) suggested that the barite was precipitated under suboxic conditions, and (3) the oxidation state of Se in barite can be used as a redox indicator of the depositional environment. (author)

Availability note (English)

Available from http://dx.doi.org/10.1246/cl.130399

Additional details

Identifiers

DOI
10.1246/cl.130399;

Publishing Information

Journal Title
Chemistry Letters (Tokyo)
Journal Volume
42
Journal Issue
9
Journal Page Range
p. 1068-1069
ISSN
0366-7022

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
45011957
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
ABSORPTION SPECTRA; BARITE; BARIUM; MAPPING; PRECIPITATION; REDOX POTENTIAL; SEDIMENTS; SELENIUM; SPRING-8 STORAGE RING; X-RAY DIFFRACTION; X-RAY FLUORESCENCE ANALYSIS; X-RAY SPECTROSCOPY
Descriptors DEC
ALKALINE EARTH METALS; CHEMICAL ANALYSIS; COHERENT SCATTERING; DIFFRACTION; ELEMENTS; METALS; MINERALS; NONDESTRUCTIVE ANALYSIS; RADIATION SOURCES; SCATTERING; SEMIMETALS; SEPARATION PROCESSES; SPECTRA; SPECTROSCOPY; STORAGE RINGS; SULFATE MINERALS; SYNCHROTRON RADIATION SOURCES; X-RAY EMISSION ANALYSIS

Optional Information

Notes
16 refs., 2 figs.