a co"2 MEV, Ce**- Pr'** 03 -.13 MEV ba a WHOLE PLANKTON i +—— pH 3.5A-D (MANGANESE, COBALT, & ZINC) C 4 Cs 60 137 88 Co 67] .8] 65 Zn /.l2 60 oO LI7 MEV q _ MEV Co® - 1.33 1 i ’ ~ ou nN N + ; 17 [ Lioiti sl 50,51, 52,53 [pr 12 MEV : 8! ae MEV 112 MEV «4 MEV] MEV MEV Lett lk a 1 4 —, - J ‘ og . CANIONS ‘oncom FOXALATE(ZIRCONIU \ 4 pH3.5A-07%) NIOBIUM) “s r , (MANGANESE, §, 5 -|. pH 3.5E 4.1"s. COBAL how (CESIUM) 02 Fig. 3a 0.4 L 4. 06 08 MEV .£ 0 T ,& ZINC)-4 1 I.2 - GM HCL(Co”, e Co” Co” ) — i 4 DOE ARCHIVES Gamma curves of fractions eluted from Dowex 50. Zr95 was eluted by HCl (ants) 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 Al r12M HCL (Mee elements is shown in Figure 3b. A. 02 Fig. 3b 04 —_ L 06 08 MEV AL 10 3 2 14 Gamma curves on a second elution of the pH 3.5 Dowex 50 fraction on Dowex l. gpe separations of Mn 2 » on and the three Co radioisotopes are shown.