or MEV, Ce**- Pr'** 03 -.13 MEV
~¢———-—___--WHOLE PLANKTON
50,51, 52,53
(rr 12 MEV
777°. Nb?
.81
MEVi MEV
‘I-12
MEV
4
1.17
~
MEV Co® -
1.33 4
3
At cs™1co® Zn
67]
Co”
l
f2-75
MEV
‘5t
+——— pH 3.5A-D (MANGANESE,
COBALT, & ZINC)
Lb
fas
Co”
7°
8!
1.12
[C0° LIT MEV
Co133
MEV J
ft
fiti
rorrrie
rc
a
‘
Dor Poet
ip
MEV
t
'
‘
—
i
Lae,
t
LANIONS + ——7T>
- OXALATE(ZIRCONIUM,
NIOBIUM) \
pH3.5 A-D-?
~. (MANGANESE, *,
Lb Ppt ft
t
| pH 3.5E,4.1-——**"._ COBALT, ZINC)-1
(CESIUM)
.L
02
Fig. 3a
04
4
06 08
MEV
i
10
FI2M HCL (Ma
bee
-6M HCL(Co”’,
Co™
i
1.2
14
Gamma curves of fractions eluted from
Dowex 50. 2r9)D was eluted by HCl (artons)
and oxalate, Cs by pH 3.5-4.1 citrate,
and radioactive Zn, Co and Mn by pH 3.5
a-d citrate.
The separation of these
elements is shown in Figure 3b.
Co’
)
fa
Fig.
i
i
02
04
3b
06 086
MEV
%110
I2
14
Gamma curves on a second
elution of the pH 3.5 Dowex
50 fraction on Dowex 1. bbe
separations of
Mn? » 2n
and the three Co radioisotopes are shown.