UNC LASSIFIED ANALYTICAL PROCEDURE FOR THE SEPARATION OF TOTAL RADIO= STRCONTI (WW FROM SAMPLES OF VEGETATION AND FOODS Ash the sample in a nickel crucible at 900°C. Estimate the amount of ash, add four times this weight of Na,CO, and fuse. Dissolve, remove silica, and collect the strontium by carbomate precipitation as for soil. Run a double nitrate precipitation as for bone using acid volumes of 200 ml for the first precipitation and 5S ml for the second. eeté (2 UNC LASS IFIED