- 27 -
The average disintegration rate of this isotope in the four
algae was approximately twice that found in four species of
land plants as based on disintegration rate per gram of
material.
Another species of algae (Caulerpa) at Vera Island
contained about one and one-half times as much wi85 as did
two species of land plants from the same island.
Because wi85 was found in the marine algae,
other
samples of marine organisms from Eniwetok lagoon also were
examined for this isotope.
The giant clam (Tridacna gigas)
is known to concentrate anions in the visceral mass
unpublished);
therefore,
(Lowman -
samples of Tridacna visceral mass
were collected September 27,
was known to be present.
1958, at Vera Island where
wi85
The results of ion-exchange chemical
separations on this organ are shown in Tables 2 and 3.
wi8s
was not present but two other anion radioelements were found --
RulO3+106_p,103+106 (279,000 d/m/g dry weight, 72 per cent of
total activity and Zr95-Nnb95 (82,000 d/m/g dry weight, 22 per
cent of total activity).
In addition to the anions,
isotopes
of the transition element cobalt were present in small amounts
(co?!, one per cent;
C098 |
5 per cent; C080 ,
trace).
In a dogtooth tuna (Gymnosarda nuda) sample taken from
Eniwetok lagoon on June 22,
however,
wi85 was found in low
level in the spleen (11,000 d/m/g dry weight, 4 per cent of