Values or
laboratory
Radionuclide (pCi/kg)
905
137¢s5
239+240py
241 Am
Expected
16.7 + 20%
WOSC, OSU? 16.9 + 20% (3)
LLNL>
--
10.8 + 20%
1261 + 4.1% (3)
--
68.9 + 20%
77.5+10% (3)
78.8 + 5.7% (2)
16.8 + 20%
16.7 + 10% (2)
17.5 + 12% (2)°
Certified
12+10%
78 + 10%
17 + 10%
17 + 20%
NOTE: Numberof replicates are in parentheses.
@ Western Oregon State College, Oregon State University.
b Lawrence Livermore National Laboratory.
© Measured by gamma-ray spectrometry.
Table 7. Expected values of radionuclides in terrestrial animal standard samples (pCi/kg).
90s,
137
67 + 20%
48 + 20%
239+240py
241 Am
0.3 + 20%
0.074 + 20%
PREPARATION OF DUPLICATES
The preparation of duplicate samples was simple and straightforward. The primary
requirement was a processed sample of sufficient size (volume) to provide two aliquots for
comparative radiochemistry. Once the aliquots were made, the samples were packaged in
suitable containers (aluminum bean or tuna cans, plastic vials, paper cartons, etc.),
labeled, and sorwarded for analysis.
The procedures used at LLNL to process the various sample types are described in
detail in a previous paperof this series.!
For completeness, the procedures appropriate to
the duplicates are briefly summarized.
10
lw
Table 6. Radionuclides measured in marine organism standard samples. All analyses done
radiochemically except as noted.