Lake Michigan environmental survey : final report / [edited] by John C. Ayers.

I *1*:*4*'*1** LAKE M'ICHIIGAN RADIOLOGICAL SURVEY *****41
T~qb~e Ar,26 (cont.)
RACICACTIVITY IN PHYTOPLANKTON
(WET WEIGHT)

S AN!P L E SA M PLE hE I GHi TCOLLECTION
SiI>TIUN Nlf',UbPBE8 (GRAVS) DATE

ACTIVITY IN' PCI/GRAM
CESI UV- 137 Z INC-6 5

(% ERROR)1
GROSS BETA2'3

C >
E F 4'
F [P P.1,:
/ I C~i

100
3~ 154
'1).') LI
1. 08_
1Z ~7
3 80
1 03
31 8
1 0 1
I2 ( e
3~I-,1
I 0 6/
I111
3 25
1. 2 1
I '2 5
324i
I Ci 71
11I?
3 1.3
3 2?

5,.38
1 4.0
1 3. 4 -,).7. 0 9

0 8 — 2 5-6 9
03-_1 5-..TG
05- 15 —70
Oil- 2 6- 6

-7,3 1 1 8,- 3 1-6 9
3 C,. 9~5 05-16-78
4.7? 08-02-69
21.79 05-20-70
6.76 0 9)- G1- 6 9
4.9C9 1 1-02-69;
I 3.:3 0 - 1 9-7 8C
4i. 29 0 9-061&- 6 9
16.4 9 I 1- 0,- 6)
37.99) 05 —22-70
1 7. 18, I0 -0 I-6 9

0.0 (07)
0.0 ( 0 22'~ )
0.0 ( QQ~
0.0 ( 07')
0. 0 ( 9
0. 0 C 022
0.0 C 0
0.0 (_ (30
0.4 (86~
0. 0 C (/)
07 (40"
0. 0 C 02
0 0 0 )

4.6 (662O,)
0. 0 ( 0 Z2)
5. 8 ( 422 ) &)

4, * 91
0. 0
0. 0
0.0
0.0
0 * C)
6. 8
0.
I0,0
0. 0)
1.2
0. 0

6 0
C 9z
(60(
( I i,,
( 6 2I I

3 5 ( ( 3 7
2 2 l
2. 5 2 ~
0. Ci 0
*2 ) ( 1 '.3 3 53 ('c C (0 0.0 C
6.12 0 9 T o 0.0 ( 0
30.44 10- 14-69 0. 0 ( 0
2 7.4 3 0 - - 3 — 7 0C 0 0 ( )
1 9.5 0 04 09 '0070( 0 '

1. Number iin parentheses is percent -error (-tw.o s tan-dard deviations) of total
radioactivity content of sample; _- _II.-.-. -..
2. Cesium-137 and Zirc1-65 radioactivity were corrected back to the date of collection.
Gross bcta radioactivity is given for the date of counting (July.-August '1970).
3. 0.0 (0%) signifies that the activity in the sample was less than the minimum
detectable limit.

A- 60