Labeling Fish with an Activable Element Through Their Diet

1981 ◽  
Vol 38 (10) ◽  
pp. 1281-1282 ◽  
Author(s):  
Hitoshi Michibata
Keyword(s):  
Rare Earth ◽  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Rare Earth Elements ◽  
Carassius Auratus ◽  
Oryzias Latipes ◽  
Branchial Arch ◽  
Goldfish Carassius Auratus ◽  
The Rare Earth

Stable samarium, one of the rare earth elements, was fed to medaka (Oryzias latipes) and goldfish (Carassius auratus). The concentration of samarium in the labeled fish was determined by neutron activation analysis. In O. latipes, samarium was detectable even 1 yr after the labeled diet was eaten. In C. auratus, samarium was retained in the fifth branchial arch, scales, and gills.Key words: fish marking, Oryzias latipes, Carassius auratus, activation analysis, activable tracer, samarium

Labeling Fish with an Activable Element

1981 ◽  
Vol 38 (2) ◽  
pp. 133-136 ◽  
Author(s):  
Hitoshi Michibata ◽  
Reiji Hori
Keyword(s):  
Rare Earth ◽  
Activation Analysis ◽  
Rare Earth Elements ◽  
Carassius Auratus ◽  
Nuclear Reactor ◽  
Abdominal Cavity ◽  
Oryzias Latipes ◽  
Thermal Neutrons ◽  
The Difference ◽  
The Rare Earth

An activable element was administrated for labeling fish, Oryzias latipes, by injecting samarium, one of the rare earth elements, into the abdominal cavity. The fish were killed at intervals varying from 1 to 600 d after the injection and exposed to a beam of thermal neutrons in a nuclear reactor. It was possible to distinguish the difference between labeled and unlabeled fish by the detection of 153Sm produced by (n, γ) reaction. The level of samarium detected remained almost constant even about 2 yr after the last injection. The second experiment using larger fish, Carassius auratus, revealed that samarium was retained in the internal organs.Key words: fish marking, activable tracer, activation analysis, samarium, Oryzias latipes, Carassius auratus

Neutron activation analysis of dinosaur bones for uranium, thorium, and rare earth elements

1973 ◽  
Vol 35 (5) ◽  
pp. 1033-1036 ◽  
Author(s):  
Zh. Ganzorig ◽  
T. Gun-Aazhav ◽  
Sh. G�rbish ◽  
O. Otgonsur�n ◽  
Zh. S�r��ter ◽  
...  
Keyword(s):  
Rare Earth ◽  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Rare Earth Elements
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