ll.
transfer filter paper and precipitate to a 150 ml syrex beaker and drv
at 125°C for 1-2 hours,
12.
place sample Ddeaker in a muffle furnace and slowly raise the temperature, over an eight hour period, to 500°C and muffle at 300°C
overnight,
13.
remove from furnace and allow to cool,
14.
dissolve residue in 1:1 HNO, and wet ash to a clean white ash,
15.
convert to chloride by the addition of 10-15 ml conc. HCl and Sake dry,
16.
dissolve residue in 60 ml 0.08N HC1 and stir 10-15 minutes,
17.
proceed with Step | of HDEHP procedure.
SEPARATION OF 7053 FROM URINE SAMPLES 7.5 TO 15 LITERS
Reagents
83strontium Tracer
Octyl Alcohol
Hydrochloric aAcid
Hydrochloric Acid
0.08N
Conc.
Phosphoric acid
Strontium Carrier
Yttrium Carrier
Calcium Chloride
Amnonium Hydroxide
6M
20 mg/ml
20 mg/ml
O.1M
58%
Nitric Acid
8N
HDEHP
202 & 5% in
Toluene by weight
This procedure is designed for 905, analysis on composite urine samples.
It is usually a batched sample obtained from persons who have been relocated
away from contaminated atolls.
The contribution of sr to urine from the diet
to blood to bladder_pathway is eliminated.
Thus, the 904, passed to urine is
contributed only from Sone at the rate of .05% of the bone burden per day.
For