isotopes that promised to bo present in quantities waieh would
&
be of sirmificance and choesing these which would give us a breac
t+
faniliay.
¥Y of you avo
“
“4
ie
©
fale
vhich wasby the Faeubnyes cnmordrnent with wi
i
Tho noxt slide incdicntcs ono way we studicd this,
Taking 1CG srars of soil contaminating with tress, we
howe vant to study, tho
io
‘
52
wn
n
B
&
B
en
i]
oy)
uniformly distri
fe
strontiun-30 or idedine, or whatever it may be, getting this
dish aporoninately so (illustra-
ns) in diamoter and then scadiny in hore 100 barley seods which
gives a very
dense population and
gives maximum penetration of
this soil by the root system and probably an
annvoach toward
&@.maximun uptake into the aardal parts.
The acrial parts were then harvested at the end of
18 to 20 days, which cave a maximun consentratien under the condios
tions in foliaze,.
—
‘
The next slide shows the
results of this kind of experi-
ment, and in ordsr to got an emphasis on concentration which ws
feol is quite invortant hore, and in order to put a basis for
conparison of these studics with some nutrient studies, which
a
we will describe later, wo are expressing our results as a con-~
\
centration factor which is simply the concentration in the aerial
portion as conpared with the concentration in the root envirentment,
in this ¢2
ase, it woulda be the concontration in tho dry. harvested
barley leaves as compared with tho concentration of strontinua, or