APPENDIX A.
RADIOCHEMICAL PROCEDURES
CALCTUM
by
R. Jensen, F, Celio, and P. W. Krey
A.1
INTRODUCTION
The calcium is ssparated from the majority of the fission products
by a palladium sulfide scavenging, a calcium carbonate precipitation,
and several ferric hydroxide scavengings. Further purification is
effected by several barium and strontium nitrate scavengings followed
by two additional ferric hydroxide scavengings. The calcium is finally
precipitated and mounted for counting as the calcium oxalate monoe
hydrate.
The chemical yield averages about 25 per cent.
REAGENTS
Ca carrier:
standardized
Fe carrier:
Pd carrier:
Ba carrier:
Sr carrier:
10 mg Fe/ml (edded as FeCl3.2H20 in dilute HCl)
10 mg Pd/ml (added as PdCLo.2H20 in dilute HCl)
10 mg Ba/ml (2dded as 5a(NO3)2 in H20)
10 mg Sr/ml (added as Sr{NO3)2 in H20)
H2s
:
gas
NHyCH
3
conce
HNO3
3
herosol OT:
K2C03
2
(NY) 2C20y:
Ethanol
:
Ethyl ether
0.1% solution
saturated aqueous sclution
fuming, conc., 6 M
saturated aquecus solution
95%
SECRET ~ RESTRICTED DATA
2
FE TET Her
42
he
‘1
of Ca(NO3}2.4H20 in H20, add 5 ml of conc. HNO3
ree
Dissolve 59,0 g
apeTIe
FREPARATION AND STANDARDIZATION OF CARRIER
a
A.3
10 mg Ca/ml (added as Ca(NO3)9.4H20 in H20
wwetnesgeilis he
A,2