MOSSBAUER SPECTROSCOPIC STUDY OF IRON-OXIDE DEPOSITS IN LIVER-TISSUE FROM THE MARINE MAMMAL DUGONG DUGONG

被引：12
作者：
CHUAANUSORN, W
STPIERRE, TG
BLACK, G
WEBB, J
MACEY, DJ
PARRY, D
机构：
[1] MURDOCH UNIV,SCH BIOL & ENVIRONM SCI,PERTH,WA 6150,AUSTRALIA
[2] NO TERR UNIV,SCH CHEM & EARTH SCI,CANBERRA,ACT 0811,AUSTRALIA
来源：
HYPERFINE INTERACTIONS | 1994年 / 91卷 / 1-4期
关键词：
D O I：
10.1007/BF02064625
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
A sample of liver from the marine mammal Dugong dugong was found to have an iron concentration of 137 000 mu g g(-1) Fe dry weight. Histological examination of the tissue revealed dense extracellular deposits of iron-containing particles about 40 to 80 mu m in diameter. Mossbauer 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.
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页码：899 / 904
页数：6
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