UNCLASSIFIED 28. 29. Mew carry out a final 75% HNO, separation in the 20 ml beaker. (100 ml volume) Filter through a fluorothene funnel on a glass fibre filt Transfer the funnel to a clean filter flask and wash out acid with anhydrous ethyl ether. Thais method was selected initially to be certain of obtai ning strontium regardless of its state. However, testa of leaching nethods showed good recoveries, and they are to be preferred far handling large samples of soil. The following data gives ac ison of results by different nethods. Sample Ko. Source 112 _l Albany, B.Y. 14 _ 98 Methods Method (d/2/ 0.1490.08 2. 0.1190.007 0.920.006 Logan, Utah 0.1690.05 0.012%0.002 - Lamont Labs. 0850.04 - .08D.0h * 1. Complete solution as described. 2. Leaching 10 minutes with 6 N HCl. 3. Lesching 10 minutes with 1 N Ammonium Acetate. The properties and abundance of the long-lived fission products given in the section on bone analysis. The effect of additiog following mixture of possible interferences in the analysis gram soil samples is given in Table A-7. were of the 190 batts GO UNCLASSIFIED 00131986 052 en 105108!