Physics
Scientific paper
Aug 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983gecoa..47.1465h&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 47, Issue 8, pp.1465-1470
Physics
8
Scientific paper
A yellowish brown precipitate in samples of Red Sea hot brine has been identified as -FeOOH · Cl n (akaganéite) by Guinier-Hägg X-ray diffraction techniques, transmission electron microscopy (TEM), electron diffraction and electron excited X-ray fluorescence. Microcrystals of Fe 1-x O (wüstite) were also identified by electron diffraction. Synthetic -FeOOH · Cl n characterized by the same techniques was identical with the brine precipitate. Bonding between -FeOOH · Cl n and 14 C labeled amino acids is pH dependent: between pH 3 and pH 7.6 amino acids were bound to the extent of 40 to 60% or 0.6 to 0.9 mmol per kg of iron oxide hydroxide. Some selectivity in affinity for different amino acids was observed, however, the effect is insufficient to explain the unusual distribution in the Atlantis II Deep brine reported in the literature.
Arrhenius Gustaf
Dowler Michael J.
Holm Nils G.
Wadsten Tommy
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