-12-
E.
Analytical Research Activities
Supervisor:
D. Chakravarti
Research investigations dealing with potassium as an index
of naturally occurring radioactivity in tuna muscle,
and cesium-137 in coconut
crab muscle and
potassium
analyses of trace
elements in fish tissues were published.
The analytical work primarily involved determinations
strontium-90 and stable calcium in plants,
brates as well as in samples from
test site.
of
fish,
and inverte-
the test site
and off the
Samples from the western Pacific as
well as from
the Chariot Site in Alaska were also analyzed for strontium-90
content.
Part of the time was
fication and
invested in development,
verification of
modi-
certain analytical methods,
pecially with respect to trace elements
es-
(transition elements).
The tentative analytical research plan for the
coming year
will include determinations of macro- and microelements as well
as of
various radionuclides,
mium-51,
in samples
especially
strontium-90 and chro-
from the test site in the Marshall Islands,
from Japan, western Pacific areas,
the Chariot Site,
Oregon-Washington coast.
The types of samples will
plankton,
Scaevola leaves,
bones,
coconut,
bird bones,
copra,
clam shells,
and the
include
Messerschmidia,
and bottom samples.
rat
Radioactivity