18.
prepare AG1x4 anion exchange resin dy filling resin bottle with
distilled water, shaxe by inverting several times and allow to settle
20-30 minutes.
three times.
19.
Carefully pour off the fines and reneat this procedure
Store resin in distilled water,
prepare exchange column by placing a glass wool plug at the bottom of
a glass column (stem 100mm x 10mm 9.D. and reservoir 120mm x 45mm) filling the stem of the column to the neck with washed resin,
condition the resin with 200 mi of 7.2N HNO,,
add sample to the column with minimal disturbance to the resin bed.
If
any crystals remain in the sample it should de filtered through a
Whatman #40 paper before introduction to the column,
wash down the sides of the sample Deaker with 5-10 ml of 7.2N HNO ,,
when sample has drained add the beaker wash to the column,
repeat steps 22 and 25,
when the washes have drained, wash the column with 250 ml of 7.2N NO ,.
On samples that require subsequent Se rontium analysis the column efifluents from steps 21 through 25 should be combined and evaporated to
dryness.
Proceed with standard chloride conversion and dissolve in 60
ml of 0.08N HCl and continue with step 1 of the HDEHP procedure,
25.
add 2 ml of 5% ‘1aHSO / to a 20 ml beaker and place the beaker under the
column,
27.
eluta the plutonium by adding 30 ml of 0.36N HC1-0.CO8N HF to the colulin.
28.
evaporate eluent to dryness at 120°S or under infrared lamps.
14