APPENDIX A.
RADIOCHEMICAL PROCEDURES
CALCIUM
by
R. Jensen, F. Celio, and P. Ww. Krey
A.1 INTRODUCTION
The calcium is separated 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 calciwn is finally
precipitated and mounted for counting as the calcium oxalate monohydrate. The chemical yield averages about 25 per cent.
REAGENTS
10
Ca carriers
standardized 10
Fe carrier:
10
Pd carrier:
Ba carriers 10
Sr carrier: 10
mg Fe/ml fedded as FeCly.2H20 in dilute HCl)
mg Pd/ml (added as PdClp.2H90 in dilute HCl)
mg Ba/ml (added as ba(NOs)2 4n H20)
mg Sr/ml (added as Sr(NO3)2 in H20)
E28
3
gas.
NHyCH
:
conece
HNO3
3
K2C03 .
saturated aqueous solution
fuming, conc., 6M
:
(NHI) 20204:
saturated aquecus solution
95%
Sthanol
3
Ethyl ether
PREPARATION
SOE Ore f
0.1% solution
Aerosol Of:
A.3
mg Ca/ml (added as Ca(NO3)5.4H20 in H20
AND STANDARDIZATION OF CARRIER
Dissolve 59. 0
g of Ca(N03}2.4H30 in H20, add 5 ml of conc, HNO3
47
SECRET - RESTRICTED DATA
APETEN REP
bi
A.2