Mossbauer spectroscopic study of iron oxide deposits in liver tissue from the marine mammal Dugong dugong

W. Chua-anusorn, St. Pierre, G. Black, J. Webb, D.J. Macey, David Parry

Research output: Contribution to journalComment/debate

Abstract

A sample of liver from the marine mammal Dugong dugong was found to have an iron concentration of 137 000 Μg g-1 Fe dry weight. Histological examination of the tissue revealed dense extracellular deposits of iron-containing particles about 40 to 80 Μm in diameter. Mössbauer spectra of the sample at temperatures between 17 and 200 K show superparamagnetic behaviour with a mean superparamagnetic blocking temperature of about 67 K, with the sextet being extinguished between 160 and 200 K. The blocking temperature and spectral parameters are indicative of the goethite-like form of hemosiderin that has previously been reported in some iron-loaded thalassemic human tissues.
Original languageEnglish
Pages (from-to)899-904
Number of pages6
JournalHyperfine Interactions
Volume91
Issue number1
DOIs
Publication statusPublished - 1994

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