Dekrmination
of
Plulcmiurnin IitIW IJ rinc S:\In~]lcs
oft.lw
lIASL proccclurc for tissue,
13-Pu-07.
Note - Thisisa mollification
Apparatus
and reagent.s arc k salmc forthemodification.
SAM J>I,lI; 1~111’;l’A
I{A’I’[ON
samplesin5 gallonplastic
carboys,or
1. Collect large urine(upto20 liters)
otherplastic
containers.
2.
‘Transfer a known exact amount of plutonium-236
tracer by weight
each sample) to a 3 liter beaker cont~ining 20 ml of 1:1 IIN03.
3.
to t.hc
Measure out one liter ofurine with a grucluatecl cylinclcr and transfer
beaker.
Rinse the cylinder with 300 ml of 11N03. Carefully adcl the HN03 to
the beaker,
rinse the cylinder with a small amount of clcionizccl water and add
to the sample.
4.
Place
5.
Place the sample on a mcclium temperatu rc hot plate and wet ash the urine
sample.
When the volume in the beaker is low enough to accommodate
more
add an additional liter of urine and 300 ml of llNOq. Repeat until the cnti re
sample
G.
i’.
8.
9.
10.
11.
..-.
—-- .—.-..
a glass
stirring
rod in the beaker
to prevent
bumping
(- 0.5 d13mfor
and cover.
sarnplc,