gamma-emitting 85g. tracer is determined using a NaI (Tl) crystal and
muicichannel analyzer.
DETERMINATION OF PLUTONIUM IN URINE, WATER AND MISCELLANEOUS SAMPLES 3Y
ALKALINE-2ARTH PHOSPHATE PRECIPITATION
Reagents
Sodium Nitrate
Oceyl Alconol
Nicric Acid
Phosphoric Acid
Potassium Hydroxide
Hydrochloric Acid
Cone. and 7.2N
85%
GN
Conc.
Calcium Nitrate
Saturated Solution (Filtered)
Eluting Solution
30 ml HC1, 0.3 mi HF/Liter H,0
Hydrogen reroxide
Anion Exchange Resin
Sodium 31sulfate
Ammonium Hydroxide
30%
AGLx4 50-100 mesh
Sis
58%
Sodium Sulfate
15% (Filtered)
l
4 d/n/ml
oe
242pluronium Tracer
Plutonium is co-precipitated with urine salts by alkaline earth phosphates.
The organic material carried by the precipitate is dry ashed in a muffle furnace.
Plutonium and urine salts are dissolved in 7.2N nitric acid.
The pluto-
mium fraction is absorbed onto an anion exchange resin and eluted with 0.36N HCl
- 0.008N HF.
Plutonium is electrodeposited onto %"" diameter stainless steel
discs and its activity determined by alpha pulse height spectrometry.
The srocedure is as follows:
1.
add sample to an appropriate size beaker recording aliquot volume.
Rinse sample container with 7.2N HNO,
2.
3
and add to sample beaker,
add an additional 5 ml of cone. HNO,, place sample on a stirring hot
plate and adjust temperature to 80° + 5°C,
12