THE RADIOCHEMISTRY OF PLUTONIUM - Sciencemadness.org

Notes
7.
8.
9.
10.
11.
12.
13.
(a)
(b)
(c)
(d)
(e)
(f)
(!3)
(h)
(i)
(j)
(k)
(1)
Allow the solution from (5) to drain down to the top of the
chromatographic column maintaining a flow rate of approximately
0.5 ml/min. Add 40 ml 8 ~ HN03 and allow to drain through the
column at the same rate.
Transfer the eluted solution to a 100-ml separating funnel and wash
with 10 ml conditioned CC14, repeat the wash with two further
portions of 10-ml CC14.
Transfer the washed solution to the 50-ml beaker and evaporate to
dryness in a fume cupboard. Note (m).
Redissolve the residue in 1 ml 6 M HC1 while the beaker is still
—
warm.
Duplicate reagent blanks are prepared using the procedure and re-
agents above, but omitting the Pu.
Prepare the electrodes for sparking by pipetting 0.1 ml of the solution
from (10) on to the tops of a pair of waterproofed graphite electrodes,
dividing the aliquot equally between the two electrodes, and dry under
an infrared lamp. Prepare duplicate pairs of electrodes for each
standard sample and reagent blank solution. Note (n).
Remove the adsorbed Pu from the column by eluting with O.32 y
HN03 (Note (o)) and then wash the column with water to remove the
HN03. Note (p).
Prepared from gaseous HC1 and deionized water,
HN03 AR redistilled from silica apparatus. Diluted with deionized
water.
Prepared from HF AR and deionized water.
CC14 AR conditioned before use by shaking with an equal volume of
8 ~ HN03 .
Commercial TBP purified by steam distillation and alkaline washing
(see Appendix).
Low density KelF modding powder, less than 100 mesh (see
Appendix).
0.1% Apiezon ~ in CC14.
Each sample should be done in duplicate.
A vigorous reaction occurs if addition of concentrated HN03 is made
to hot residue.
H the residue is allowed to go to dryness it will be difficult to re-
dissolve.
See Appendix for column preparation.
Vitrosil tall-form beaker nominally 50 ml capacity in fact has a
volume of about 75 ml.
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