FIGURE 5
SEQUENTIAL SEPARATION OF Np AND Pu FROM Am AND Cm FOR SOIL
AND BONE SAMPLES
Np, Pu, Am, Cm + Tracers
Dissolved Sample
La, HNO3, Ha02, &; make 8N HNQ3, NaNO»
Record Am-Np Sep Time
8S¢
Anion Dowex !-X4, 1OQ0-200 mesh, 2.5X6cm
BN KNO3
|
Jan HNOQ3-0.iN HF
| Am, Cm, La |
| Np, Pu |
iOOmg Ca; HsC20q, pH 3.5
—=— EVO. ; Hz803, HNO
No, Pu
Ca Oxalate, La, Am, Cm
to separation
aed purification
——Fe
Pp— wet ash, HNOg
NHgOH, pH&, dissolve in HNOs,
Fe, La, Am, Cm
$0 group purification
ELUTION OF 24m AND *“Cm FROM A1.0CM DIAM., 7.5 CM LONG COLUMN OF
DOWEX 50 AS A FUNCTION OF ELUANT VOLUME
FIGURE 6
24am: Av. 4runs, 91.6+ 1.4%cecovered (95-45ml)
244em: Av 2runs, 95.0+2.2% recovered (95-45mi)
fo ——————— WASH
ELUANT
soml 20% EtOH 3N HCI
1tOml 45% EtOH
6N HCI
PERCENT OF TOTAL ACTIVITY
65S
20r—
oh
Lt
Wasn-90
|
100
|
ft
110
Eluant-O
ft
|
ft
ft
5
10
20
VOLUME OF ELUANT, ml
tf |
30
|
|
yt
ao
50