SEPARATION OF 7°STRONTIUM FROM URINE SAMPLES 1 LITER OR LESS
Reagents
Strontium Tracer
Octyl Alcohol
Nitric acid
Strontium Carrier
Cone.
20 mg/ml
Calcium Chloride
Oxalic Acid
Sodium Hydroxide
Hydrochloric Acid
Aydrochloric Acid
01M
Saturated Solution
6M
Conc.
0.08N
Yttrium Carrier
4
(2
.
s
Tne procedure
20 mg/ml
is as follows:
measure sample into a 1.5 liter Seaker,
place beaker on a stirring hot place and heat slowly to 80-85°C,
acidify sample to pH 1 with nitric acid (add acid in small amounts to
prevent excessive foaming, use a few drovs of octyl alcohol if neces-
sary),
add 40 mg each Sr carrier and Y carrier,
1 ml 8° 5. tracer and 50 ml
O.1M Cacl.,
digest with stirring at 80-85°C for 30 minutes,
adjust to pH 4 with 6M NaOH,
add 40 ml saturated oxalic acid soiution and mix well,
teadjust to pH 4 with 6M NaOH and digest, with stirring, at 80-85° for
30 minutes,
remove from heat, remove stirring 2ar and let settle overnight,
10.
filter sample through a Whatman #42 ashless filter paper using dilute
NH,OF wash solution to rinse beaker and precipitate,